M29DW128F70NF1F

M29DW128F NUMONYX | Alldatasheet

Document overview

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Technical content

Datasheet sections

• 1 Summary description
• 2 Signal descriptions
• 2.1 Address Inputs (A0-A22)
• 2.2 Data Inputs/Outputs (DQ0-DQ7)
• 2.3 Data Inputs/Outputs (DQ8-DQ14)
• 2.4 Data Input/Output or Address Input (DQ15A–1)
• 2.5 Chip Enable (E)
• 2.6 Output Enable (G)
• 2.7 Write Enable (W
• 2.8 V PP/Write Protect (VPP/WP)
• 2.9 Reset/Block Temporary Unprotect (RP)
• 2.10 Ready/Busy Output (RB)
• 2.11 Byte/Word Organization Select (BYTE)
• 2.13 V SS Ground
• 3 Bus operations
• 3.1 Bus Read
• 3.2 Bus Write
• 3.3 Output Disable
• 3.4 Standby
• 3.5 Automatic Standby
• 3.6 Special Bus operations
• 3.6.1 Read Electronic Signature
• 3.6.2 Verify Extended Block Protection Indicator
• 3.6.3 Verify Block Protection Status
• 3.6.4 Hardware Block Protect
• 3.6.5 Temporary Unprotect of high voltage Protected Blocks
• 4 Hardware Protection
• 4.1 Write Protect

Datasheet sections

• 6.3.2 Exit Extended Block command
• 6.3.3 Set Extended Block Protection bit command
• 6.3.4 Verify Extended Block Protection bit command
• 6.3.5 Password Program command
• 6.3.6 Password Verify command
• 6.3.7 Password Protection Unlock command
• 6.3.8 Set Password Protection mode command
• 6.3.9 Verify Password Protection mode command
• 6.3.10 Set Standard Protection mode command
• 6.3.11 Verify Standard Protection mode command
• 6.3.12 Set Non-Volatile Modify Protection bit command
• 6.3.13 Verify Non-Volatile Modify Protection bit command
• 6.3.14 Clear Non-Volatile Modify Protection bits command
• 6.3.15 Set Lock bit command
• 6.3.16 Clear Lock bit command
• 6.3.17 Verify Lock bit command
• 6.3.18 Set Lock-Down bit command
• 6.3.19 Verify Lock-Down bit command
• 7 Status Register
• 7.1 Data Polling bit (DQ7)
• 7.2 T oggle bit (DQ6)
• 7.3 Error bit (DQ5)
• 7.4 Erase Timer bit (DQ3)
• 7.5 Alternative T oggle bit (DQ2)
• 7.6 Write to Buffer and Program Abort bit (DQ1)
• 8 Dual Operations and Multiple Bank architecture
• 9 Maximum rating
• 10 DC and AC parameters
• 11 Package mechanical
• 12 Part numbering

128 Mbit (16Mb x8 or 8Mb x16, Multiple Bank, Page, Boot Block)

■ Supply voltage –V CC = 2.7V to 3.6V for Program, Erase and Read –V PP =12V for Fast Program (optional) ■ Asynchronous Random/Page Read – Page width: 8 Words – Page access: 25, 30ns – Random access: 60, 70ns ■ Programming time – 10µs per Byte/Word typical – 4 Words / 8 Bytes Program – 32-Word Write Buffer ■ Erase Verify ■ Memory blocks – Quadruple Bank Memory Array: 16Mbit+48Mbit+48Mbit+16Mbit – Parameter Blocks (at Top and Bottom) ■ Dual Operation – While Program or Erase in one bank, Read in any of the other banks ■ Program/Erase Suspend and Resume modes – Read from any Block during Program Suspend – Read and Program another Block during Erase Suspend ■ Unlock Bypass Program – Faster Production/Batch Programming ■ Common Flash Interface – 64 bit Security Code ■ 100,000 Program/Erase cycles per block ■ Low power consumption – Standby and Automatic Standby ■ Hardware Block Protection PP/WP Pin for fast program and write protect of the four outermost parameter blocks ■ Security features – Standard Protection – Password Protection ■ Extended Memory Block – Extra block used as security block or to store additional information ■ Electronic Signature – Manufacturer Code: 0020h – Device Code: 227Eh + 2220h + 2200h ■ ECOPACK® packages available BGA TSOP56 (NF) 14 x 20mm TBGA64 (ZA) 10 x 13mm www.numonyx.com

Table 31. TSOP56 – 56 lead Plastic Thin Small Outline, 14 x 20mm, package mechanical data . . . 66

1 Summary description

voltage (2.7 to 3.6V) supply. At Power-up the memory defaults to its Read mode. main blocks, divided into four Banks, A, B, C and D, providing multiple Bank operations. While programming or erasing in one bank, read operations are possible in any other bank. Table 2. Eight of the Parameter Blocks are at the top of the memory address space, and eight are at the bottom. protection cannot be undone.

• Hardware Protection: –T h e V PP/WP provides a hardware protection of the four outermost parameter blocks (two at the top and two at the bottom of the address space). –T h e R P pin temporarily unprotects all the blocks previously protected using a High Voltage Block Protection technique (see Appendix D: High Voltage Block Protection).
• Software Protection – Standard Protection – Password Protection The memory is offered in TSOP56 (14 x 20mm) and TBGA64 (10 x 13mm, 1mm pitch) packages. The 8-bit Bus mode is only available when the M29DW128F is delivered in TSOP56 package. In order to meet environmental requirements, Numonyx offers the M29DW128F in ECOPACK ® packages. ECOPACK packages are Lead-free. The category of second Level Interconnect is marked on the package and on the inner box label, in compliance with JEDEC Standard JESD97. The maximum ratings related to soldering conditions are also marked on the inner box label. The memory is supplied with all the bits erased (set to ’1’).

Figure 1. Logic diagram Table 1. Signal names

1. The x8 organization is only available in TSOP56 Package while the x16 organization is available for both

Figure 2. TSOP connections Table 2. Bank architecture

Figure 3. TBGA connections (top view through package)

Figure 4. Block Addresses (x8)

1. Also see Appendix A and Table 34 for a full listing of the Block Addresses.

64 KBytes

8 KBytes

Figure 5. Block Addresses (x16)

1. Also see Appendix A, Table 34 for a full listing of the Block Addresses.

32 KWords

4 KWords

32 KWord

Signal descriptions M29DW128F

2 Signal descriptions

See Figure 1: Logic diagram, and Table 1: Signal names, for a brief overview of the signals connected to this device.

2.1 Address Inputs (A0-A22)

The Address Inputs select the cells in the memory array to access during Bus Read operations. During Bus Write operations they control the commands sent to the Command Interface of the Program/Erase Controller.

2.2 Data Inputs/Outputs (DQ0-DQ7)

The Data I/O outputs the data stored at the selected address during a Bus Read operation. During Bus Write operations they represent the commands sent to the Command Interface of the internal state machine.

2.3 Data Inputs/Outputs (DQ8-DQ14)

The Data I/O outputs the data stored at the selected address during a Bus Read operation when BYTE is High, VIH. When BYTE is Low, VIL, these pins are not used and are high impedance. During Bus Write operations the Command Register does not use these bits. When reading the Status Register these bits should be ignored.

2.4 Data Input/Output or Address Input (DQ15A–1)

When the device is in x16 Bus mode, this pin behaves as a Data Input/Output pin (as DQ8- DQ14). When the device is in x8 Bus mode, this pin behaves as an address pin; DQ15A–1 Low will select the LSB of the addressed Word, DQ15A–1 High will select the MSB. Throughout the text consider references to the Data Input/Output to include this pin when the device operates in x16 bus mode and references to the Address Inputs to include this pin when the device operates in x8 bus mode except when stated explicitly otherwise.

2.5 Chip Enable (E )

The Chip Enable pin, E, activates the memory, allowing Bus Read and Bus Write operations to be performed. When Chip Enable is High, VIH, all other pins are ignored.

2.6 Output Enable (G )

The Output Enable pin, G, controls the Bus Read operation of the memory.

M29DW128F Signal descriptions

2.7 Write Enable (W )

The Write Enable pin, W, controls the Bus Write operation of the memory’s Command Interface.

2.8 V PP/Write Protect (VPP/WP)

The VPP/Write Protect pin provides two functions. The VPP function allows the memory to use an external high voltage power supply to reduce the time required for Program operations. This is achieved by bypassing the unlock cycles and/or using the multiple Word (2 or 4 at-a-time) or multiple byte Program (2, 4 or 8 at-a-time) commands. The Write Protect function provides a hardware method of protecting the four outermost boot blocks (two at the top, and two at the bottom of the address space). When V PP/Write Protect is Low, VIL, the memory protects the four outermost boot blocks; Program and Erase operations in these blocks are ignored while VPP/Write Protect is Low, even when RP is at VID. When VPP/Write Protect is High, VIH, the memory reverts to the previous protection status of the four outermost boot blocks. Program and Erase operations can now modify the data in these blocks unless the blocks are protected using Block Protection. Applying V PPH to the VPP/WP pin will temporarily unprotect any block previously protected (including the four outermost parameter blocks) using a High Voltage Block Protection technique (In-System or Programmer technique). See Table 9: Hardware Protection for details. When VPP/Write Protect is raised to V PP the memory automatically enters the Unlock Bypass mode. When VPP/Write Protect returns to VIH or VIL normal operation resumes. During Unlock Bypass Program operations the memory draws IPP from the pin to supply the programming circuits. See the description of the Unlock Bypass command in the Command Interface section. The transitions from V IH to VPP and from VPP to VIH must be slower than tVHVPP, see Figure 20. Never raise VPP/Write Protect to VPP from any mode except Read mode, otherwise the memory may be left in an indeterminate state. The VPP/Write Protect pin must not be left floating or unconnected or the device may become unreliable. A 0.1µF capacitor should be connected between the VPP/Write Protect pin and the VSS Ground pin to decouple the current surges from the power supply. The PCB track widths must be sufficient to carry the currents required during Unlock Bypass Program, I PP.

Signal descriptions M29DW128F

2.9 Reset/Block Temporary Unprotect (RP )

The Reset/Block Temporary Unprotect pin can be used to apply a Hardware Reset to the memory or to temporarily unprotect all the blocks previously protected using a High Voltage Block Protection technique (In-System or Programmer technique). Note that if V PP/WP is at VIL, then the four outermost parameter blocks will remain protected even if RP is at VID. A Hardware Reset is achieved by holding Reset/Block Temporary Unprotect Low, VIL, for at least tPLPX. After Reset/Block Temporary Unprotect goes High, VIH, the memory will be ready for Bus Read and Bus Write operations after tPHEL or tRHEL, whichever occurs last. See the Ready/Busy Output section, Table 30: Reset/Block Temporary Unprotect AC characteristics and Figure 18 and Figure 19 for more details. Holding RP at VID will temporarily unprotect all the blocks previously protected using a High Voltage Block Protection technique. Program and erase operations on all blocks will be possible. The transition from V IH to VID must be slower than tPHPHH.

2.10 Ready/Busy Output (RB )

The Ready/Busy pin is an open-drain output that can be used to identify when the device is performing a Program or erase operation. During Program or erase operations Ready/Busy is Low, V OL. Ready/Busy is high-impedance during Read mode, Auto Select mode and Erase Suspend mode. After a Hardware Reset, Bus Read and Bus Write operations cannot begin until Ready/Busy becomes high-impedance. See Table 30: Reset/Block Temporary Unprotect AC characteristics and Figure 18 and Figure 19. The use of an open-drain output allows the Ready/Busy pins from several memories to be connected to a single pull-up resistor. A Low will then indicate that one, or more, of the memories is busy.

2.11 Byte/Word Organization Select (BYTE )

It is used to switch between the x8 and x16 Bus modes of the memory when the M29DW128F is delivered in TSOP56 package. When Byte/Word Organization Select is Low, V IL, the memory is in x8 mode, when it is High, VIH, the memory is in x16 mode.

M29DW128F Signal descriptions 2.12 V CC supply voltage (2.7V to 3.6V) VCC provides the power supply for all operations (Read, Program and Erase). The Command Interface is disabled when the VCC Supply Voltage is less than the Lockout Voltage, VLKO. This prevents Bus Write operations from accidentally damaging the data during power up, power down and power surges. If the Program/Erase Controller is programming or erasing during this time then the operation aborts and the memory contents being altered will be invalid. A 0.1µF capacitor should be connected between the V CC Supply Voltage pin and the VSS Ground pin to decouple the current surges from the power supply. The PCB track widths must be sufficient to carry the currents required during Program and erase operations, I CC2.

2.13 V SS Ground

VSS is the reference for all voltage measurements. The device features two VSS pins both of which must be connected to the system ground.

3 Bus operations

There are five standard bus operations that control the device. These are Bus Read (Random and Page modes), Bus Write, Output Disable, Standby and Automatic Standby. Dual operations are possible in the M29DW128F, thanks to its multiple bank architecture. While programming or erasing in one banks, read operations are possible in any of the other banks. Write operations are only allowed in one bank at a time. See Table 3 and Table 6, Bus Operations, for a summary. Typically glitches of less than 5ns on Chip Enable, Write Enable, and Reset/Block Temporary Unprotect pins are ignored by the memory and do not affect bus operations.

3.1 Bus Read

Bus Read operations read from the memory cells, or specific registers in the Command Interface. To speed up the read operation the memory array can be read in Page mode where data is internally read and stored in a page buffer. The Page has a size of 8 Words and is addressed by the address inputs A0-A2. A valid Bus Read operation involves setting the desired address on the Address Inputs, applying a Low signal, V IL, to Chip Enable and Output Enable and keeping Write Enable High, VIH. The Data Inputs/Outputs will output the value, see Figure 12: Random Read AC waveforms, Figure 13: Page Read AC waveforms, and Table 26: Read AC characteristics, for details of when the output becomes valid.

3.2 Bus Write

Bus Write operations write to the Command Interface. A valid Bus Write operation begins by setting the desired address on the Address Inputs. The Address Inputs are latched by the Command Interface on the falling edge of Chip Enable or Write Enable, whichever occurs last. The Data Inputs/Outputs are latched by the Command Interface on the rising edge of Chip Enable or Write Enable, whichever occurs first. Output Enable must remain High, V IH, during the whole Bus Write operation. See Figure 14 and Figure 15, Write AC Waveforms, and Table 27 and Table 28, Write AC Characteristics, for details of the timing requirements.

3.3 Output Disable

The Data Inputs/Outputs are in the high impedance state when Output Enable is High, VIH.

3.4 Standby

When Chip Enable is High, VIH, the memory enters Standby mode and the Data Inputs/Outputs pins are placed in the high-impedance state. To reduce the Supply Current to the Standby Supply Current, I CC2, Chip Enable should be held within VCC ± 0.2V. For the Standby current level see Table 25: DC Characteristics. During program or erase operations the memory will continue to use the Program/Erase Supply Current, ICC3, for Program or Erase operations until the operation completes.

3.5 Automatic Standby

If CMOS levels (VCC ± 0.2V) are used to drive the bus and the bus is inactive for 300ns or more the memory enters Automatic Standby where the internal Supply Current is reduced to the Standby Supply Current, I CC2. The Data Inputs/Outputs will still output data if a Bus Read operation is in progress.

3.6 Special Bus operations

Additional bus operations can be performed to read the Electronic Signature, verify the Protection Status of the Extended Memory Block (second section), and apply and remove Block Protection. These bus operations are intended for use by programming equipment and are not usually used in applications. They require V ID to be applied to some pins.

3.6.1 Read Electronic Signature

The memory has two codes, the Manufacturer code and the Device code used to identify the memory. These codes can accessed by performing read operations with control signals and addresses set as shown in Table 4 and Table 6. These codes can also be accessed by issuing an Auto Select command (see Section 6.1.2: Auto Select command).

3.6.2 Verify Extended Bl ock Protection Indicator

The Extended Block is divided in two sections of which one is Factory Locked and the second one is either Customer Lockable or Customer Locked. The Protection Status of the second section of the Extended Block (Customer Lockable or Customer Locked) can be accessed by reading the Extended Block Protection Indicator. This is performed by applying the signals as shown in Table 5 and Table 8. The Protection Status of the Extended Block is then output on bits DQ7 and DQ6 of the Data Input/Outputs. (see Table 3 and Table 6, Bus Operations). The Protection Status of the Extended Block can also be accessed by issuing an Auto Select command (see Section 6.1.2: Auto Select command).

3.6.3 Verify Bloc k Protection Status

The Protection Status of a Block can be directly accessed by performing a read operation with control signals and addresses set as shown in Table 5 and Table 8. If the Block is protected, then 01h (in x8 mode) is output on Data Input/Outputs DQ0-DQ7, otherwise 00h is output.

3.6.4 Hardware Block Protect

The VPP/WP pin can be used to protect the four outermost parameter blocks. When VPP/WP is at VIL the four outermost parameter blocks are protected and remain protected regardless of the Block Protection Status or the Reset/Block Temporary Unprotect pin state.

3.6.5 Temporary Unprotect of high voltage Protected Blocks

Table 3. Bus operations, 8-bit mode (1) Table 4. Read Electronic Signature, 8-bit mode (1) Table 5. Block Protection, 8-bit mode (1)

1. X = V IL or VIH. BKA Bank Address, BA any Address in the Block.
2. This indicates the protection status of the second section of the Extended Block; the first section of the Extended Block

being always Factory Locked.

1. The RP pin unprotects all the blocks that have been previous ly protected using a High Voltage protection Technique.

Table 6. Bus operations, 16-bit mode (1) Table 7. Read Electronic Signature, 16-bit mode (1) Table 8. Block Protection, 16-bit mode (1)

1. X = V IL or VIH. BKA Bank Address, BA Any Address in the Block.
2. This indicates the protection status of the second section of the Extended Block; the first section of the Extended Block

being always Factory Locked.

1. The RP pin unprotects all the blocks that have been previous ly protected using a High Voltage protection Technique.

4 Hardware Protection

block protection/unprotection using VPP/WP and RP pins.

4.1 Write Protect

a detailed description of the signals).

4.2 Temporary Block Unprotect

previously protected using a High Voltage Block Protection technique. Table 9. Hardware Protection

1. The temporary unprotection is valid onl y for the blocks that have been protected using the High Voltage Protection

(Standard, Password) do not follow this rules.

M29DW128F Software Protection

5 Software Protection

The M29DW128F has two different Software Protection modes: the Standard Protection mode and the Password Protection mode. On first use all parts default to the Standard Protection mode and the customer is free to activate the Standard or the Password Protection mode. The desired protection mode is activated by setting one of two one-time programmable bits, the Standard Protection Mode Lock bit or the Password Protection Mode Lock bit. Programming the Standard and the Password Protection Mode Lock bit to ‘1’ will permanently activate the Standard Protection mode and the Password Protection mode, respectively. These two bits are one-time programmable and non-volatile, once the Protection mode has been programmed, it cannot be changed and the device will permanently operate in the selected Protection mode. It is recommended to activate the desired Software Protection mode when first programming the device. The device is shipped with all blocks unprotected. The Block Protection Status can be read by issuing the Auto Select command (see Table 10: Block Protection status). The Standard and Password Protection modes offer two levels of protection, a Block Lock/Unlock protection and a Non-Volatile protection. For the four outermost parameter blocks, an even higher level of block protection can be achieved by locking the blocks using the Non-Volatile Protection and then by holding the V PP/WP pin Low.

5.1 Standard Protection mode

5.1.1 Block Lock/Unlock Protection

It is a flexible mechanism to protect/unprotect a block or a group of blocks from program or erase operations. A volatile Lock bit is assigned to each block or group of blocks. When the lock bit is set to ‘1’ the associated block or group of blocks is protected from program/erase operations, when the Lock bit is set to ‘0’ the associated block or group of blocks is unprotected and can be programmed or erased. The Lock bits can be set (‘1’) and cleared (‘0’) individually as often as required by issuing a Set Lock Bit command and Clear Lock bit command, respectively. After a Power-up or Hardware Reset, all the Lock bits are cleared to ‘0’ (block unlocked).

Software Protection M29DW128F

5.1.2 Non-Volatile Protection

A Non-Volatile Modify Protection bit is assigned to each block or group of blocks. When a Non-Volatile Modify Protection bit is set to ‘1’ the associated block or group of blocks is protected, preventing any program or erase operations in this block or group of blocks. The Non-Volatile Modify Protection bits are set individually by issuing a Set Non-Volatile Modify Protection bit command. They are non-volatile and will remain set through a hardware reset or a power-down/power-up sequence. The Non-Volatile Modify Protection bits cannot be cleared individually, they can only be cleared all at the same time by issuing a Clear Non-Volatile Modify Protection bits command. However if any one of the Non-Volatile Modify Protection bits has to be cleared, care should be taken to preprogram to ‘1’ all the Non-Volatile Modify Protection bits prior to issuing the Clear Non-Volatile Modify Protection bits in order to prevent the over-erasure of previously cleared Non Volatile Modify Protection bits. It is crucial to prevent over-erasure because the process may lead to permanent damage to the Non-Volatile Modify Protection bits and the device does not have any built-in means of preventing over-erasure. The device features a volatile Lock-Down bit which can be used to prevent changing the state of the Non-Volatile Modify Protection bits. When set to ‘1’, the Non-Volatile Modify Protection bits can no longer be modified; when set to ‘0’, the Non-Volatile Modify Protection bits can be set and reset using the Set Non-Volatile Modify Protection bit command and the Clear Non-Volatile Modify Protection bits command, respectively. The Lock-Down bit is set by issuing the Set Lock-Down bit Command. It is not cleared using a command, but through a hardware reset or a power-down/power-up sequence. The parts are shipped with the Non-Volatile Modify Protection bits set to ‘0’. Locked blocks and Non-Volatile Locked blocks can co-exist in the same memory array. Refer to Table 10: Block Protection status and Figure 7: Software Protection scheme for details on the block protection mechanism.

5.2 Password Protection mode

The Password Protection mode provides a more advanced level of software protection than the Standard Protection mode. Prior to entering the Password Protection mode, it is necessary to set a password and to verify it (see Section 6.3.5: Password Program command and Section 6.3.6: Password Verify command). The Password Protection mode is then activated by programming the Password Protection Mode Lock bit to ‘1’. The Reset/Block Temporary Unprotect pin, RP, can be at VID or at VIH. This operation is not reversible and once the bit is programmed the device will permanently remain in the Password Protection mode. The Password Protection mode uses the same protection mechanisms as the Standard Protection mode (Block Lock/Unlock, Non-Volatile Protection).

5.2.1 Block Lock/Unlock Protection

The Block Lock/Unlock Protection operates exactly in the same way as in the Standard Protection mode.

5.2.2 Non-Volatile Protection

The Non-Volatile Protection is more advanced in the Password Protection mode. Protection bit command or the Clear Non-Volatile Modify Protection bits command, respectively). Volatile Modify Protection bits cannot be modified. Once the device is in Password Protection mode, the Password can no longer be read or retrieved. Table 10. Block Protection status

1. The Lock bit can always be modified by issuing a Clear Lock bit command or by taking the device through a Power-up or

M29DW128F Command interface

6 Command interface

All Bus Write operations to the memory are interpreted by the Command Interface. Commands consist of one or more sequential Bus Write operations. Failure to observe a valid sequence of Bus Write operations will result in the memory returning to Read mode. The long command sequences are imposed to maximize data security. The address used for the commands changes depending on whether the memory is in 16- bit or 8-bit mode.

6.1 Standard commands

See either Table 12, or Table 11, depending on the configuration that is being used, for a summary of the Standard commands.

6.1.1 Read/Reset command

The Read/Reset command returns the memory to Read mode. It also resets the errors in the Status Register. Either one or three Bus Write operations can be used to issue the Read/Reset command. The Read/Reset command can be issued, between Bus Write cycles before the start of a program or erase operation, to return the device to Read mode. If the Read/Reset command is issued during the time-out of a Block erase operation, the memory will take up to 10µs to abort. During the abort period no valid data can be read from the memory. The Read/Reset command will not abort an Erase operation when issued while in Erase Suspend.

6.1.2 Auto Select command

The Auto Select command is used to read the Manufacturer Code, the Device Code, the Protection Status of each block (Block Protection Status) and the Extended Block Protection Indicator. It can be addressed to either Bank. Three consecutive Bus Write operations are required to issue the Auto Select command. Once the Auto Select command is issued Bus Read operations to specific addresses output the Manufacturer Code, the Device Code, the Extended Block Protection Indicator and a Block Protection Status (see Table 11 and Table 12 in conjunction with Table 4, Table 5, Table 7 and Table 8). The memory remains in Auto Select mode until a Read/Reset or CFI Query command is issued.

Command interface M29DW128F

6.1.3 Read CFI Query command

The Read CFI Query Command is used to put the addressed bank in Read CFI Query mode. Once in Read CFI Query mode Bus Read operations to the same bank will output data from the Common Flash Interface (CFI) Memory Area. If the read operations are to a different bank from the one specified in the command then the read operations will output the contents of the memory array and not the CFI data. One Bus Write cycle is required to issue the Read CFI Query Command. Care must be taken to issue the command to one of the banks (A22-A19) along with the address shown in Table 3 and Table 6. Once the command is issued subsequent Bus Read operations in the same bank (A22-A19) to the addresses shown in Appendix B: Common Flash Interface (CFI) (A7-A0), will read from the Common Flash Interface Memory Area. This command is valid only when the device is in the Read Array or Auto Select mode. To enter Read CFI query mode from Auto Select mode, the Read CFI Query command must be issued to the same bank address as the Auto Select command, otherwise the device will not enter Read CFI Query mode. The Read/Reset command must be issued to return the device to the previous mode (the Read Array mode or Auto Select mode). A second Read/Reset command is required to put the device in Read Array mode from Auto Select mode. See Appendix B, Table 35, Table 36, Table 37, Table 38, Table 39 and Table 40 for details on the information contained in the Common Flash Interface (CFI) memory area.

6.1.4 Blank Verify command

The Blank Verify command is used to check if a block is blank or in other words, if it has been successfully erased and all its bits set to '1'. Three cycles are required to issue a Verify command: 1. The command starts with two unlock cycles. 2. The third bus write cycle sets up the Verify command code along with the address of the block to be checked. 3. Bus Read operations during the Blank Verify operation output the Status Register on Data Inputs/Outputs (see 7: Status Register). After the Blank Verify command has completed, the memory returns to Read mode, unless an error has occurred. When an error occurs, the memory continues to output the Status Register. A Read/Reset command must be issued to reset the error condition and return to Read mode.F

6.1.5 Chip Erase command

The Chip Erase command can be used to erase the entire chip. Six Bus Write operations are required to issue the Chip Erase Command and start the Program/Erase Controller. If any blocks are protected, then these are ignored and all the other blocks are erased. If all of the blocks are protected the Chip Erase operation appears to start but will terminate within about 100µs, leaving the data unchanged. No error condition is given when protected blocks are ignored. During the erase operation the memory will ignore all commands, including the Erase Suspend command. It is not possible to issue any command to abort the operation. Typical chip erase times are given in Ta bl e 1 8. All Bus Read operations during the Chip Erase

M29DW128F Command interface operation will output the Status Register on the Data Inputs/Outputs. See the section on the Status Register for more details. After the Chip Erase operation has completed the memory will return to the Read mode, unless an error has occurred. When an error occurs the memory will continue to output the Status Register. A Read/Reset command must be issued to reset the error condition and return to Read mode. The Chip Erase Command sets all of the bits in unprotected blocks of the memory to ’1’. All previous data is lost.

Command interface M29DW128F

6.1.6 Block Erase command

The Block Erase command can be used to erase a list of one or more blocks in one or more Banks. It sets all of the bits in the unprotected selected blocks to ’1’. All previous data in the selected blocks is lost. Six Bus Write operations are required to select the first block in the list. Each additional block in the list can be selected by repeating the sixth Bus Write operation using the address of the additional block. The Block Erase operation starts the Program/Erase Controller after a time-out period of 50µs after the last Bus Write operation. Once the Program/Erase Controller starts it is not possible to select any more blocks. Each additional block must therefore be selected within 50µs of the last block. The 50µs timer restarts when an additional block is selected. After the sixth Bus Write operation a Bus Read operation within the same Bank will output the Status Register. See the Status Register section for details on how to identify if the Program/Erase Controller has started the Block Erase operation. If any selected blocks are protected then these are ignored and all the other selected blocks are erased. If all of the selected blocks are protected the Block Erase operation appears to start but will terminate within about 100µs, leaving the data unchanged. No error condition is given when protected blocks are ignored. During the Block Erase operation the memory will ignore all commands except the Erase Suspend command and the Read/Reset command which is only accepted during the 50µs time-out period. Typical block erase times are given in Table 18. After the Erase operation has started all Bus Read operations to the Banks being erased will output the Status Register on the Data Inputs/Outputs. See the section on the Status Register for more details. After the Block Erase operation has completed the memory will return to the Read mode, unless an error has occurred. When an error occurs, Bus Read operations to the Banks where the command was issued will continue to output the Status Register. A Read/Reset command must be issued to reset the error condition and return to Read mode.

6.1.7 Erase Suspend command

The Erase Suspend command may be used to temporarily suspend a Block or multiple Block Erase operation. One Bus Write operation specifying the Bank Address of one of the Blocks being erased is required to issue the command. Issuing the Erase Suspend command returns the whole device to Read mode. The Program/Erase Controller will suspend within the Erase Suspend Latency time (see Table 18 for value) of the Erase Suspend Command being issued. Once the Program/Erase Controller has stopped the memory will be set to Read mode and the Erase will be suspended. If the Erase Suspend command is issued during the period when the memory is waiting for an additional block (before the Program/Erase Controller starts) then the Erase is suspended immediately and will start immediately when the Erase Resume Command is issued. It is not possible to select any further blocks to erase after the Erase Resume. During Erase Suspend it is possible to Read and Program cells in blocks that are not being erased; both Read and Program operations behave as normal on these blocks. If any attempt is made to program in a protected block or in the suspended block then the Program command is ignored and the data remains unchanged. The Status Register is not read and no error condition is given. Reading from blocks that are being erased will output the Status Register.

M29DW128F Command interface It is also possible to issue the Auto Select, Read CFI Query and Unlock Bypass commands during an Erase Suspend. The Read/Reset command must be issued to return the device to Read Array mode before the Resume command will be accepted. During Erase Suspend a Bus Read operation to the Extended Block will output the Extended Block data. Once in the Extended Block mode, the Exit Extended Block command must be issued before the erase operation can be resumed.

6.1.8 Erase Resume command

The Erase Resume command is used to restart the Program/Erase Controller after an Erase Suspend. The command must include the Bank Address of the Erase-Suspended Bank, otherwise the Program/Erase Controller is not restarted. The device must be in Read Array mode before the Resume command will be accepted. An Erase can be suspended and resumed more than once.

6.1.9 Program Suspend command

The Program Suspend command allows the system to interrupt a program operation so that data can be read from any block. When the Program Suspend command is issued during a program operation, the device suspends the program operation within the Program Suspend Latency time (see Table 18 for value) and updates the Status Register bits. The Bank Addresses of the Block being programmed must be specified in the Program Suspend command. After the program operation has been suspended, the system can read array data from any address. However, data read from Program-Suspended addresses is not valid. The Program Suspend command may also be issued during a program operation while an erase is suspended. In this case, data may be read from any addresses not in Erase Suspend or Program Suspend. If a read is needed from the Extended Block area (One-time Program area), the user must use the proper command sequences to enter and exit this region. The system may also issue the Auto Select command sequence when the device is in the Program Suspend mode. The system can read as many Auto Select codes as required. When the device exits the Auto Select mode, the device reverts to the Program Suspend mode, and is ready for another valid operation. See Auto Select command sequence for more information.

6.1.10 Program Resume command

After the Program Resume command is issued, the device reverts to programming. The controller can determine the status of the program operation using the DQ7 or DQ6 status bits, just as in the standard program operation. See Write Operation Status for more information. The system must write the Program Resume command, specifying the Bank addresses of the Program-Suspended Block, to exit the Program Suspend mode and to continue the programming operation. Further issuing of the Resume command is ignored. Another Program Suspend command can be written after the device has resumed programming.

Command interface M29DW128F

6.1.11 Program command

The Program command can be used to program a value to one address in the memory array at a time. The command requires four Bus Write operations, the final Write operation latches the address and data in the internal state machine and starts the Program/Erase Controller. Programming can be suspended and then resumed by issuing a Program Suspend command and a Program Resume command, respectively (see Section 6.1.9: Program Suspend command and Section 6.1.10: Program Resume command paragraphs). If the address falls in a protected block then the Program command is ignored, the data remains unchanged. The Status Register is never read and no error condition is given. After programming has started, Bus Read operations in the Bank being programmed output the Status Register content, while Bus Read operations to the other Bank output the contents of the memory array. See the section on the Status Register for more details. Typical program times are given in Ta bl e 1 8. After the program operation has completed the memory will return to the Read mode, unless an error has occurred. When an error occurs Bus Read operations to the Bank where the command was issued will continue to output the Status Register. A Read/Reset command must be issued to reset the error condition and return to Read mode. One of the Erase Commands must be used to set all the bits in a block or in the whole memory from ’0’ to ’1’.

Table 11. Standard Commands, 8-bit mode (1)(2)

3 AAA AA 555 55 X F0

3 AAA AA 555 55 (BKA)

1. Grey cells represent Read cycles . The other cells are Write cycles.
2. X Don’t Care, PA Program Address, PD Program Data, BA Any address in the Block, BKA Bank Address. All values in the
3. The Auto Select addresses and data are given in

Protection, 8-bit mode, except for A9 that is ‘Don’t Care’.

Table 12. Standard Commands, 16-bit mode (1)(2)

1. Grey cells represent Read cycles . The other cells are Write cycles.
2. X Don’t Care, PA Program Address, PD Program Data, BA Any address in the Block, BKA Bank Address. All values in the
3. The Auto Select addresses and data are given in

Protection, 16-bit mode, except for A9 that is ‘Don’t Care’.

M29DW128F Command interface

6.2 Fast Program commands

The M29DW128F offers a set of Fast Program commands to improve the programming throughput:

• Write to Buffer and Program
• Double and Quadruple Word, Program
• Double, Quadruple and Octuple Byte Program
• Unlock Bypass. See either Table 14, or Table 13, depending on the configuration that is being used, for a summary of the Fast Program commands. When VPPH is applied to the VPP/Write Protect pin the memory automatically enters the Fast Program mode. The user can then choose to issue any of the Fast Program commands. Care must be taken because applying a V PPH to the VPP/WP pin will temporarily unprotect any protected block. Only one bank can be programmed at any one time. The other bank must be in Read mode or Erase Suspend. After programming has started, Bus Read operations in the Bank being programmed output the Status Register content, while Bus Read operations to the other Bank output the contents of the memory array. Fast program commands can be suspended and then resumed by issuing a Program Suspend command and a Program Resume command, respectively (see Section 6.1.9: Program Suspend command and Section 6.1.10: Program Resume command paragraphs.) After the fast program operation has completed, the memory will return to the Read mode, unless an error has occurred. When an error occurs Bus Read operations to the Bank where the command was issued will continue to output the Status Register. A Read/Reset command must be issued to reset the error condition and return to Read mode. One of the Erase Commands must be used to set all the bits in a block or in the whole memory from ’0’ to ’1’. Typical Program times are given in Table 18: Program, Erase Times and Program, Erase Endurance Cycles.

Command interface M29DW128F

6.2.1 Write to Buffer and Program command

The Write to Buffer and Program Command makes use of the device’s 64-byte Write Buffer to speed up programming. 32 Words/64 bytes can be loaded into the Write Buffer. Each Write Buffer has the same A5-A22 addresses.The Write to Buffer and Program command dramatically reduces system programming time compared to the standard non-buffered Program command. When issuing a Write to Buffer and Program command, the V PP/WP pin can be either held High, VIH or raised to VPPH. See Ta bl e 1 8 for details on typical Write to Buffer and Program times in both cases. Five successive steps are required to issue the Write to Buffer and Program command: 1. The Write to Buffer and Program command starts with two unlock cycles. 2. The third Bus Write cycle sets up the Write to Buffer and Program command. The setup code can be addressed to any location within the targeted block. 3. The fourth Bus Write cycle sets up the number of Words/bytes to be programmed. Value N is written to the same block address, where N+1 is the number of Words/bytes to be programmed. N+1 must not exceed the size of the Write Buffer or the operation will abort. 4. The fifth cycle loads the first address and data to be programmed. 5. Use N Bus Write cycles to load the address and data for each Word/bytes into the Write Buffer. Addresses must lie within the range from the start address+1 to the start address + N-1. Optimum performance is obtained when the start address corresponds to a 64 byte boundary. If the start address is not aligned to a 64 byte boundary, the total programming time is doubled. All the addresses used in the Write to Buffer and Program operation must lie within the same page. To program the content of the Write Buffer, this command must be followed by a Write to Buffer and Program Confirm command. If an address is written several times during a Write to Buffer and Program operation, the address/data counter will be decremented at each data load operation and the data will be programmed to the last word loaded into the Buffer. Invalid address combinations or failing to follow the correct sequence of Bus Write cycles will abort the Write to Buffer and Program. The Status Register bits DQ1, DQ5, DQ6, DQ7 can be used to monitor the device status during a Write to Buffer and Program operation. If is not possible to detect Program operation fails when changing programmed data from ‘0’ to ‘1’, that is when reprogramming data in a portion of memory already programmed. The resulting data will be the logical OR between the previous value and the current value. A Write to Buffer and Program Abort and Reset command must be issued to abort the Write to Buffer and Program operation and reset the device in Read mode. During Write to Buffer and Program operations, the bank being programmed will accept Program/Erase Suspend commands. See Appendix E, Figure 27: Write to Buffer and Program flowchart and Pseudo Code, for a suggested flowchart on using the Write to Buffer and Program command.

M29DW128F Command interface

6.2.2 Write to Buffer and Program Confirm command

The Write to Buffer and Program Confirm command is used to confirm a Write to Buffer and Program command and to program the N+1 Words/bytes loaded in the Write Buffer by this command.

6.2.3 Write to Buffer and Pr ogram Abort and Reset command

The Write to Buffer and Program Abort and Reset command is used to abort Write to Buffer and Program command.

6.2.4 Double Word Program command

This is used to write two adjacent Words in x16 mode, simultaneously. The addresses of the two Words must differ only in A0. Three bus write cycles are necessary to issue the command: 1. The first bus cycle sets up the command. 2. The second bus cycle latches the Address and the Data of the first Word to be written. 3. The third bus cycle latches the Address and the Data of the second Word to be written and starts the Program/Erase Controller.

6.2.5 Quadruple Word Program command

This is used to write a page of four adjacent Words, in x16 mode, simultaneously. The addresses of the four Words must differ only in A1 and A0. Five bus write cycles are necessary to issue the command: 1. The first bus cycle sets up the command. 2. The second bus cycle latches the Address and the Data of the first Word to be written. 3. The third bus cycle latches the Address and the Data of the second Word to be written. 4. The fourth bus cycle latches the Address and the Data of the third Word to be written. 5. The fifth bus cycle latches the Address and the Data of the fourth Word to be written and starts the Program/Erase Controller.

6.2.6 Double byte Program Command

This is used to write two adjacent bytes in x8 mode, simultaneously. The addresses of the two bytes must differ only in DQ15A-1. Three bus write cycles are necessary to issue the command: 1. The first bus cycle sets up the command. 2. The second bus cycle latches the Address and the Data of the first byte to be written. 3. The third bus cycle latches the Address and the Data of the second byte to be written and starts the Program/Erase Controller.

Command interface M29DW128F

6.2.7 Quadruple byte Program command

This is used to write four adjacent bytes in x8 mode, simultaneously. The addresses of the four bytes must differ only in A0, DQ15A-1. Five bus write cycles are necessary to issue the command. 1. The first bus cycle sets up the command. 2. The second bus cycle latches the Address and the Data of the first byte to be written. 3. The third bus cycle latches the Address and the Data of the second byte to be written. 4. The fourth bus cycle latches the Address and the Data of the third byte to be written. 5. The fifth bus cycle latches the Address and the Data of the fourth byte to be written and starts the Program/Erase Controller.

6.2.8 Octuple byte Program command

This is used to write eight adjacent bytes, in x8 mode, simultaneously. The addresses of the eight bytes must differ only in A1, A0 and DQ15A-1. Nine bus write cycles are necessary to issue the command: 1. The first bus cycle sets up the command. 2. The second bus cycle latches the Address and the Data of the first byte to be written. 3. The third bus cycle latches the Address and the Data of the second byte to be written. 4. The fourth bus cycle latches the Address and the Data of the third byte to be written. 5. The fifth bus cycle latches the Address and the Data of the fourth byte to be written. 6. The sixth bus cycle latches the Address and the Data of the fifth byte to be written. 7. The seventh bus cycle latches the Address and the Data of the sixth byte to be written. 8. The eighth bus cycle latches the Address and the Data of the seventh byte to be written. 9. The ninth bus cycle latches the Address and the Data of the eighth byte to be written and starts the Program/Erase Controller.

6.2.9 Unlock Bypass command

The Unlock Bypass command is used in conjunction with the Unlock Bypass Program command to program the memory faster than with the standard program commands. When the cycle time to the device is long, considerable time saving can be made by using these commands. Three Bus Write operations are required to issue the Unlock Bypass command. Once the Unlock Bypass command has been issued the bank enters Unlock Bypass mode. When in Unlock Bypass mode, only the Unlock Bypass Program and Unlock Bypass Reset commands are valid. The Unlock Bypass Program command can then be issued to program addresses within the bank, or the Unlock Bypass Reset command can be issued to return the bank to Read mode. In Unlock Bypass mode the memory can be read as if in Read mode.

6.2.10 Unlock Bypa ss Program command

data and starts the Program/Erase Controller.

6.2.11 Unlock Bypass Reset command

command does not exit from Unlock Bypass mode. Table 13. Fast Program Commands, 8-bit mode (1)

3 AAA AA 555 55 AAA F0

1. X Don’t Care, PA Program Address, PD Program Data, BA Any address in the Block, BKA Bank Address, WBL Write Buffer Location. All

values in the table are in hexadecimal.

1. The maximum number of cycles in the command sequence is 68. N+1 is the number of bytes to be programmed during the Write to B uffer
2. Each buffer has the same A5-A22 addresses. A0-A4 and A-1 are used to select a byte within the N+1 byte page.
3. The 6th cycle has to be issued N time. WBL scans the byte inside the page.
4. BA must be identical to the address loaded during the Write to buffer and Program 3rd and 4th cycles.

Table 14. Fast Program Commands, 16-bit mode (1)

1. X Don’t Care, PA Program Address, PD Program Data, BA Any address in the Block, BKA Bank Address, WBL Write

Buffer Location. All values in the table are in hexadecimal.

1. The maximum number of cycles in the command sequence is 36. N+1 is the number of Words to be programmed during

the Write to Buffer and Program operation.

1. Each buffer has the same A5-A22 addresses. A0-A4 are used to select a Word within the N+1 Word page.
2. The 6th cycle has to be issued N time. WBL scans the Word inside the page.
3. BA must be identical to the address loaded during the Write to buffer and Program 3rd and 4th cycles.

M29DW128F Command interface

6.3 Block Protection commands

Blocks or groups of blocks can be protected against accidental program, erase or read operations. The Protection Groups are shown in Appendix A, Table 34: Block Addresses and Protection Groups. The device block protection scheme is shown in Figure 7: Software Protection scheme and Figure 6: Block Protection State diagram. See either Table 15, or Table 16, depending on the configuration that is being used, for a summary of the Block Protection commands. Only the commands related to the Extended Block Protection are available in both 8 bit and 16 bit memory configuration. The other block protection commands are available in 16-bit configuration only.

6.3.1 Enter Extended Block command

The M29DW128F has one extra 256-byte block (Extended Block) that can only be accessed using the Enter Extended Block command. Three Bus Write cycles are required to issue the Extended Block command. Once the command has been issued the device enters the Extended Block mode where all Bus Read or Program operations are conducted on the Extended Block. Once the device is in the Extended Block mode, the Extended Block is addressed by using the addresses occupied by the boot blocks in the other operating modes (see Table 34: Block Addresses and Protection Groups). The device remains in Extended Block mode until the Exit Extended Block command is issued or power is removed from the device. After power-up or a hardware reset, the device reverts to the Read mode where commands issued to the Boot Block Address space will address the Boot Blocks. Note that when the device is in the Extended Block mode, the V PP/WP pin cannot be used for fast programming and the Unlock Bypass mode is not available. The Extended Block cannot be erased, and can be treated as one-time programmable (OTP) memory. In Extended Block mode only array cell locations (Bank A) with the same addresses as the Extended Block are not accessible. In Extended Block mode dual operations are allowed and the Extended Block physically belongs to Bank A. In Extended Block mode, Erase, Chip Erase, Erase Suspend and Erase resume commands are not allowed. To exit from the Extended Block mode the Exit Extended Block command must be issued. The Extended Block can be protected by setting the Extended Block Protection bit to ‘1’; however once protected the protection cannot be undone.

6.3.2 Exit Extended Block command

The Exit Extended Block command is used to exit from the Extended Block mode and return the device to Read mode. Four Bus Write operations are required to issue the command.

Command interface M29DW128F

6.3.3 Set Extended Block Protection bit command

The Set Extended Block Protection bit command programs the Extended Block Protection bit to ‘1’ thus preventing the second section of the Extended Block from being programmed. A Read/Reset command must be issued to abort a Set Extended Block Protection bit command. Six successive steps are required to issue the Set Extended Block Protection bit command. 1. The command starts with two unlock cycles. 2. The third Bus Write cycle sets up the Set Extended Block Protection bit command. 3. The fourth Bus Write Cycle programs the Extended Block Protection bit to ‘1’. 4. The last two cycles verify the value programmed at the Extended Block Protection bit address: if bit DQ0 of Data Inputs/Outputs is set to ’1’, it indicates that the Extended Block Protection bit has been successfully programmed. If DQ0 is ‘0’, the Set Extended Block Protection bit command must be issued and verified again.

6.3.4 Verify Extended Block Protection bit command

The Verify Extended Block Protection bit command reads the status of the Extended Block Protection bit on bit DQ0 of the Data Inputs/Outputs. If DQ0 is ‘1’, the second section of the Extended Block is protected from program operations.

6.3.5 Password Program command

The Password Program Command is used to program the 64-bit Password used in Password Protection mode. Four cycles are required to program the Password: 1. The first two cycles are unlock cycles. 2. The third cycle issues the Password Program command. 3. The fourth cycle inputs the 16-bit data required to program the Password. To program the 64-bit Password, the complete command sequence must be entered four times at four consecutive addresses selected by A1 to A0. Read operations can be used to read the Status Register during a Password Program operation. All other operations are forbidden. The Password can be checked by issuing a Password Verify command. Once Password Program operation has completed, a Read/ Reset command must be issued to return the device to Read mode. The Password Protection mode can then be selected. By default, all Password bits are set to ‘1’.

M29DW128F Command interface

6.3.6 Password Verify command

The Password Verify Command is used to verify the Password used in Password Protection mode. To verify the 64-bit Password, the complete command sequence must be entered four times at four consecutive addresses selected by A1 to A0. If the Password Mode Locking bit is programmed and the user attempts to verify the Password, the device will output all F’s onto the I/O data bus. The Password is output regardless of the bank address. The user must issue a Read/reset command to return the device to Read mode. Dual operations are not allowed during a Password Verify operation.

6.3.7 Password Protection Unlock command

The Password Protection Unlock command is used to clear the Lock-Down bit in order to unprotect all Non-Volatile Modify Protection bits when the device is in Password Protection mode. The Password Protection Unlock command must be issued along with the correct Password. The complete command sequence must be entered for each 16 bits of the Password. There must be a 2µs delay between successive Password Protection Unlock commands in order to prevent hackers from cracking the Password by trying all possible 64-bit combinations. If this delay is not respected, the latest command will be ignored.

6.3.8 Set Password Protection mode command

The Set Password Protection Mode command puts the device in Password Protection mode by programming the Password Protection Mode Lock bit to ‘1’. This command can be issued either with the Reset/Block Temporary Unprotect pin, RP , at VID or at VIH. Six cycles are required to issue a Set Password Protection Mode command: 1. The first two cycles are unlock cycles. 2. The third cycle issues the command. 3. The fourth and fifth cycles select the address (see Table 34). 4. The last cycle verifies if the operation has been successful. If DQ0 is set to ’1’, the device has successfully entered the Password Protection mode. If DQ0 is ‘0’, the operation has failed and the command must be re-issued. There must be a 100µs delay between the fourth and fifth cycles. Once the Password Protection mode is activated the device will permanently remain in this mode.

6.3.9 Verify Password Protection mode command

The Verify Password Protection Mode command reads the status of the Password Protection Mode Lock bit. If it is ‘1’, the device is in Password Protection mode.

Command interface M29DW128F

6.3.10 Set Standard Protection mode command

The Set Standard Protection Mode command puts the device in Standard Protection mode by programming the Standard Protection Mode Lock bit to ‘1’. Six cycles are required to issue the Standard Protection Mode command: 1. The first two cycles are unlock cycles. 2. The third cycle issues the program command. 3. The fourth and fifth cycles select the address (see Table 34). 4. The last cycle verifies if the operation has been successful. If DQ0 is set to ’1’, the Standard Protection Mode has been successfully activated. If DQ0 is ‘0’, the operation has failed and the command must be re-issued. There must be a 100µs delay between the fourth and fifth cycles. Once the Standard Protection mode is activated the device will permanently remain in this mode.

6.3.11 Verify Standard Protection mode command

The Verify Standard Protection Mode command reads the status of the Standard Protection Mode Lock bit. If it is ‘1’, the device is in Standard Protection mode.

6.3.12 Set Non-Volatile M odify Protection bit command

A block or group of blocks can be protected from program or erase by issuing a Set Non- Volatile Modify Protection bit command along with the block address. This command sets the Non-Volatile Modify Protection bit to ‘1’ for a given block or group of blocks. Six cycles are required to issue the command: 1. The first two cycles are unlock cycles. 2. The third cycle issues the program command. 3. The fourth and fifth cycles select the address (see Table 34). 4. The last cycle verifies if the operation has been successful. If DQ0 is set to ’1’, the Non- Volatile Modify Protection bit has been successfully programmed. If DQ0 is ‘0’, the operation has failed and the command must be re-issued. There must be a 100µs delay between the fourth and fifth cycles. The Non-Volatile Modify Protection bits are erased simultaneously by issuing a Clear Non- Volatile Modify Protection bits command except if the Lock-Down bit is set to ‘1’. The Non-Volatile Modify Protection bits can be set a maximum of 100 times.

6.3.13 Verify Non-Volatile Modify Protection bit command

The status of a Non-Volatile Modify Protection bit for a given block or group of blocks can be read by issuing a Verify Non-Volatile Modify Protection Bit command along with the block address.

M29DW128F Command interface

6.3.14 Clear Non-Volatile M odify Protection bits command

This command is used to clear all Non-Volatile Modify Protection bits. No specific block address is required. If the Lock-Down bit is set to ‘1’, the command will fail. Six cycles are required to issue a Clear Non-Volatile Modify Protection bits command: 1. The first two cycles are unlock cycles. 2. The third cycle issues the command. 3. The last three cycles verify if the operation has been successful. If DQ0 is set to ’0’, all Non-Volatile Modify Protection bits have been successfully cleared. If DQ0 is ‘1’, the operation has failed and the command must be re-issued. There must be a 12ms delay between the fourth and fifth cycles.

6.3.15 Set Lock bit command

The Set Lock bit command individually sets the Lock bit to ‘1’ for a given block or group of blocks. If the Non-Volatile Lock bit for the same block or group of blocks is set, the block is locked regardless of the value of the Lock bit. (see Table 10: Block Protection status).

6.3.16 Clear Lock bit command

The Clear Lock bit command individually clears (sets to ‘0’) the Lock bit for a given block or group of blocks. If the Non-Volatile Lock bit for the same block or group of blocks is set, the block or group of blocks remains locked (see Table 10: Block Protection status).

6.3.17 Verify Lock bit command

The status of a Lock bit for a given block can be read by issuing a Verify Lock bit command along with the block address.

6.3.18 Set Lock-Down bit command

This command is used to set the Lock-Down bit to ‘1’ thus protecting the Non-Volatile Modify Protection bits from program and erase. There is no Unprotect Lock-Down bit command.

6.3.19 Verify Lock-Down bit command

This command is used to read the status of the Lock-Down bit. The status is output on bit DQ1. If DQ1 is ‘1’, all the Non-Volatile Modify Protection bits are protected from program or erase operations.

Table 15. Block Protection Commands, 8-bit mode (1)(2)

1. OW Extended Block Protection bit Address (A7-A0=’00011010’), X Don’t Care. All values in the table are in hexadecimal.
2. Grey cells represent Read cycles . The other cells are Write cycles.
3. A 100µs timeout is required between cycles 4 and 5.

Table 16. Block Protection Commands, 16-bit mode (1)(2)(3)(4)

1. Grey cells represent Read cycles . The other cells are Write cycles.
2. SA Protection Group Address, BA Any address in the Block, BKA Bank Address, SL Standard Protection Mode Lock bit

Care. All values in the table are in hexadecimal.

1. Addresses are described in Ta ble 34.
2. During Unlock and Command cycles, if the lower address bits are 555h or 2AAh then the address bits higher than A11

(except where BA is required) and data bits higher than DQ7 are Don't Care.

1. A Reset Command must be issued to return to the Read mode.

100µs delay is required between the 4th and the 5th cycle.

1. Data is latched on the rising edge of W .
2. The entire command sequence must be entered for each portion of the password.
3. The command sequence returns FFh if the Password Protection Mode locking bit is set.
4. The password is written over four consecutive cycles, at addresses [0-3]
5. A 2µs timeout is required between any two portions of the password.
6. A 10ms delay is required between the 4th and the 5th cycle.
7. A 12ms timeout is requir ed between cycles 4 and 5.
8. Cycle 4 erases all Non-Volatile Modify Protection bits. Cycles 5 and 6 verify that the bits have been successfully cleared

erase command, all Non-Volatile Modify Protection bits should be programmed to prevent over erasure.

1. DQ1=1 if the Non-Volatile Modify Protection bit is locked, DQ1 = 0 if it is unlocked.

Table 16. Block Protection Commands, 16-bit mode (continued) (1)(2)(3)(4)

Table 17. Protection Command Addresses Table 18. Program, Erase Times and Program, Erase Endurance Cycles

1. Typical values measured at room temperature and nominal voltages.
2. Sampled, but not 100% tested.
3. Maximum value measured at worst case conditions for both temperature and V

CC after 100,00 program/erase cycles.

1. Maximum value measured at worst case conditions for both temperature and V CC.

7 Status Register

The M29DW128F has one Status Register. The Status Register provides information on the current or previous Program or Erase operations executed in each bank. The various bits convey information and errors on the operation. Bus Read operations from any address within the Bank, always read the Status Register during Program and Erase operations. It is also read during Erase Suspend when an address within a block being erased is accessed. The bits in the Status Register are summarized in Table 19: Status Register bits.

7.1 Data Polling bit (DQ7)

The Data Polling bit can be used to identify whether the Program/Erase Controller has successfully completed its operation or if it has responded to an Erase Suspend. The Data Polling bit is output on DQ7 when the Status Register is read. During Program operations the Data Polling bit outputs the complement of the bit being programmed to DQ7. After successful completion of the Program operation the memory returns to Read mode and Bus Read operations from the address just programmed output DQ7, not its complement. During Erase operations the Data Polling bit outputs ’0’, the complement of the erased state of DQ7. After successful completion of the Erase operation the memory returns to Read mode. In Erase Suspend mode the Data Polling bit will output a ’1’ during a Bus Read operation within a block being erased. The Data Polling bit will change from a ’0’ to a ’1’ when the Program/Erase Controller has suspended the Erase operation. Figure 8: Data Polling flowchart, gives an example of how to use the Data Polling bit. A Valid Address is the address being programmed or an address within the block being erased.

7.2 Toggle bit (DQ6)

The Toggle bit can be used to identify whether the Program/Erase Controller has successfully completed its operation or if it has responded to an Erase Suspend. The Toggle bit is output on DQ6 when the Status Register is read. During a Program/Erase operation the Toggle bit changes from ’0’ to ’1’ to ’0’, etc., with successive Bus Read operations at any address. After successful completion of the operation the memory returns to Read mode. During Erase Suspend mode the Toggle bit will output when addressing a cell within a block being erased. The Toggle bit will stop toggling when the Program/Erase Controller has suspended the Erase operation. Figure 9: Toggle flowchart, gives an example of how to use the Data Toggle bit. Figure 16 and Figure 17 describe Toggle bit timing waveform.

7.3 Error bit (DQ5)

The Error bit can be used to identify errors detected by the Program/Erase Controller. The Error bit is set to ’1’ when a Program, Block Erase or Chip Erase operation fails to write the correct data to the memory. If the Error bit is set a Read/Reset command must be issued before other commands are issued. The Error bit is output on DQ5 when the Status Register is read. Note that the Program command cannot change a bit set to ’0’ back to ’1’ and attempting to do so will set DQ5 to ‘1’. A Bus Read operation to that address will show the bit is still ‘0’. One of the Erase commands must be used to set all the bits in a block or in the whole memory from ’0’ to ’1’.

7.4 Erase Timer bit (DQ3)

The Erase Timer bit can be used to identify the start of Program/Erase Controller operation during a Block Erase command. Once the Program/Erase Controller starts erasing the Erase Timer bit is set to ’1’. Before the Program/Erase Controller starts the Erase Timer bit is set to ’0’ and additional blocks to be erased may be written to the Command Interface. The Erase Timer bit is output on DQ3 when the Status Register is read.

7.5 Alternative Toggle bit (DQ2)

The Alternative Toggle bit can be used to monitor the Program/Erase controller during Erase operations. The Alternative Toggle bit is output on DQ2 when the Status Register is read. During Chip Erase and Block Erase operations the Toggle bit changes from ’0’ to ’1’ to ’0’, etc., with successive Bus Read operations from addresses within the blocks being erased. A protected block is treated the same as a block not being erased. Once the operation completes the memory returns to Read mode. During Erase Suspend the Alternative Toggle bit changes from ’0’ to ’1’ to ’0’, etc. with successive Bus Read operations from addresses within the blocks being erased. Bus Read operations to addresses within blocks not being erased will output the memory array data as if in Read mode. After an Erase operation that causes the Error bit to be set, the Alternative Toggle bit can be used to identify which block or blocks have caused the error. The Alternative Toggle bit changes from ’0’ to ’1’ to ’0’, etc. with successive Bus Read Operations from addresses within blocks that have not erased correctly. The Alternative Toggle bit does not change if the addressed block has erased correctly. Figure 16 and Figure 17 describe Alternative Toggle bit timing waveform.

7.6 Write to Buffer and Program Abort bit (DQ1)

The Write to Buffer and Program Abort bit, DQ1, is set to ‘1’ when a Write to Buffer and Program operation aborts. The Write to Buffer and Program Abort and Reset command must be issued to return the device to Read mode (see Write to Buffer and Program in COMMANDS section).

Figure 8. Data Polling flowchart Table 19. Status Register bits (1)(2)

1. Unspecified data bits should be ignored.
2. Figure 16 and Figure 17 describe Toggle and Alternative Toggle bits timing waveforms.

Figure 9. Toggle flowchart

1. BA = Address of Bank being Programmed or Erased.

8 Dual Operations and Multiple Bank architecture

possible in another bank with zero latency. operations while the erase is being executed. the device can have one block in Erase Suspend mode, one programming and other banks in read mode. By using a combination of these features, read operations are possible at any moment. only the commonly used commands are represented in these tables. Table 20. Dual Operations allowed in other Banks (1)

1. If several banks are involved in a pr ogram or erase operation, then only the banks that are not concerned with the

operation are available for dual operations.

1. Read Status Register is not a command. The Status Re gister can be read during a block program or erase operation.
2. Only after a program or erase operation in that bank.
3. Only after a Program or Erase Suspend command in that bank.
4. Only a Program Resume is allowed if the bank was previously in Program Suspend mode.
5. Only an Erase Resume is allowed if t he bank was previously in Erase Suspend mode.

Table 21. Dual Operations allowed in same Bank

1. Read Status Register is not a command. The Status Re gister can be read by addressing the block being programmed or
2. Only after a program or erase operation in that bank.
3. Only after a Program or Erase Suspend command in that bank.
4. Not allowed in the Block or Word that is being erased or programmed.
5. The Status Register can be read by addressing the block being erase suspended.

9 Maximum rating

Program and other relevant quality documents. Table 22. Absolute maximum ratings

1. Minimum voltage may undershoot to –2V during trans ition and for less than 20ns during transitions.
2. Maximum voltage may overshoot to V CC +2V during transition and for less than 20ns during transitions.
3. V PP must not remain at 12V for more than a total of 80hrs.

10 DC and AC parameters

Figure 10. AC measurement I/O waveform Figure 11. AC measurement Load Circuit Table 23. Operating and AC measurement conditions

Table 24. Device capacitance

1. Sampled only, not 100% tested.

Table 25. DC Characteristics

1. In Dual operations the Supply Current will be the sum of I CC1(read) and ICC3 (program/erase).
2. Sampled only, not 100% tested.

Figure 12. Random Read AC waveforms

Figure 13. Page Read AC waveforms

Table 26. Read AC characteristics

1. Sampled only, not 100% tested.

Figure 14. Write AC waveforms, Write Enable Controlled Table 27. Write AC characteristics, Write Enable Controlled

1. Sampled only, not 100% tested.

Figure 15. Write AC waveforms, Chip Enable Controlled Table 28. Write AC characteristics, Chip Enable Controlled

1. Sampled only, not 100% tested.

Table 30. Reset/Block Temporary Unprotect AC characteristics

1. Sampled only, not 100% tested.

Figure 21. TSOP56 – 56 lead Plastic Thin Small Outline, 14 x 20mm, package outline Table 31. TSOP56 – 56 lead Plastic Thin Small Outline, 14 x 20mm, package mechanical data

Figure 22. TBGA64 10x13mm - 8x8 active ball array, 1mm pitch, package outline Table 32. TBGA64 10x13mm - 8x8 active ball array, 1mm pitch, package mechanical data

12 Part numbering

ordering information contact your nearest Numonyx sales office. Devices are shipped from the factory with the memory content bits erased to ’1’. device, please contact your nearest Numonyx Sales Office. Table 33. Ordering information scheme

Table 34. Block Addresses and Protection Groups

Table 34. Block Addresses and Protection Groups (continued)

interface easily with the device, enabling the software to upgrade itself when necessary. read operations in the same bank (A22-A19) output the CFI data. Table 39 and Table 40 show the addresses (A-1, A0-A10) used to retrieve the data. impossible to change the security number after it has been written by Numonyx. Table 35. Query Structure Overview (1)

1. Query data are always presented on the lowest order data outputs.

Table 36. CFI Query Identification String (1)

1. Query data are always presented on the lowest order data outputs (DQ7-DQ0) only. DQ8-DQ15 are ‘0’.

Table 37. CFI Query System Interface information (1)

1. The values given in the above table are valid for both packages.

Table 38. Device Geometry Definition (1)

1. Erase Block Region 1 corresponds to addresses 000000h to 007FFFh; Erase block Region 2 corresponds to addresses

008000h to 3F7FFFh and Erase Block Region 3 corresponds to addresses 3F8000h to 3FFFFFh.

Table 39. Primary Algorithm-Specific Extended Query table (1)

1. The values given in the above table are valid for both packages.

Table 39. Primary Algorithm-Specific Extended Query table (continued) (1) Table 40. Security Code Area

M29DW128F Extended Memory Block Appendix C Extended Memory Block The M29DW128F has an extra block, the Extended Block, that can be accessed using a dedicated command. This Extended Block is 128 Words in x16 mode and 256 bytes in x8 mode. It is used as a security block (to provide a permanent security identification number) or to store additional information. The Extended Block is divided into two memory areas of 64 Words each:

• The first one is Factory Locked.
• The second one is Customer Lockable. It is up to the customer to protect it from program operations. Its status is indicated by bit DQ6 and DQ7. When DQ7 is set to ‘1’ and DQ6 to ‘0’, it indicates that this second memory area is Customer Lockable. When DQ7 and DQ6 are both set to ‘1’, it indicates that the second part of the Extended Block is Customer Locked and protected from program operations. Bit DQ7 being permanently locked to either ‘1’ or ‘0’ is another security feature which ensures that a customer lockable device cannot be used instead of a factory locked one. Bits DQ6 and DQ7 are the most significant bits in the Extended Block Protection Indicator and a specific procedure must be followed to read it. See “ Section 3.6.2: Verify Extended Block Protection Indicator” and Table 5 and Table 8, Block Protection, for details of how to read bit DQ7. The Extended Block can only be accessed when the device is in Extended Block mode. For details of how the Extended Block mode is entered and exited, refer to the Section 6.1.11: Program command and Section 6.3.2: Exit Extended Block command paragraphs, and to Table 15 and Table 16, Block Protection Commands. C.1 Factory Locked Section of the Extended Block The first section of The Extended Block is permanently protected from program operations and cannot be unprotected. The Random Number, Electronic Serial Number (ESN) and Security Identification Number (see Table 41: Extended Block Address and Data) are written in this section in the factory.

the Extended Block but care must be taken because the protection is not reversible.

• Issue the Enter Extended Block command to place the device in Extended Block mode, then use the In-System Technique with RP either at VIH or at VID. Refer to Section D.2: In-System technique in Appendix D: High Voltage Block Protection, and to the corresponding flowcharts Figure 25 and Figure 26 for a detailed explanation of the technique).
• Issue the Enter Extended Block command to place the device in Extended Block mode, then use the Programmer Technique. Refer to Section D.1: Programmer technique in Appendix D: High Voltage Block Protection, and to the corresponding flowcharts Figure 23 and Figure 24 for a detailed explanation of the technique).
• Issue a Set Extended Block Protection bit command to program the Extended Block Protection bit to ‘1’ thus preventing the second section of the Extended Block from being programmed. Bit DQ6 of the Extended Block Protection Indicator is automatically set to '1' to indicate that the second section of the Extended Block is Customer Locked. Once the Extended Block is programmed and protected, the Exit Extended Block command must be issued to exit the Extended Block mode and return the device to Read mode.

Table 41. Extended Block Address and Data

1. See Table 34: Block Addresses and Protection Groups .
2. ESN = Electronic Serial Number.

M29DW128F High Voltage Block Protection Appendix D High Voltage Block Protection The High Voltage Block Protection can be used to prevent any operation from modifying the data stored in the memory. The blocks are protected in groups, refer to Appendix A, Ta bl e 3 4 for details of the Protection Groups. Once protected, Program and Erase operations within the protected group fail to change the data. There are three techniques that can be used to control Block Protection, these are the Programmer technique, the In-System technique and Temporary Unprotection. Temporary Unprotection is controlled by the Reset/Block Temporary Unprotection pin, RP ; this is described in the Signal Descriptions section. To protect the Extended Block issue the Enter Extended Block command and then use either the Programmer or In-System technique. Once protected issue the Exit Extended Block command to return to read mode. The Extended Block protection is irreversible, once protected the protection cannot be undone. D.1 Programmer technique The Programmer technique uses high (VID) voltage levels on some of the bus pins. These cannot be achieved using a standard microprocessor bus, therefore the technique is recommended only for use in Programming Equipment. To protect a group of blocks follow the flowchart in Figure 23: Programmer equipment Group Protect flowchart. To unprotect the whole chip it is necessary to protect all of the groups first, then all groups can be unprotected at the same time. To unprotect the chip follow Figure 24: Programmer equipment Chip Unprotect flowchart. Table 42: Programmer technique Bus operations, 8-bit or 16-bit mode, gives a summary of each operation. The timing on these flowcharts is critical. Care should be taken to ensure that, where a pause is specified, it is followed as closely as possible. Do not abort the procedure before reaching the end. Chip Unprotect can take several seconds and a user message should be provided to show that the operation is progressing.

several seconds and a user message should be provided to show that the operation is progressing. Table 42. Programmer technique Bus operations, 8-bit or 16-bit mode

1. Block Protection Groups are shown in Appendix A, Table 34.

Figure 23. Programmer equipment Group Protect flowchart

1. Block Protection Groups are shown in Appendix A, Table 34.

Figure 24. Programmer equipment Chip Unprotect flowchart

1. Block Protection Groups are shown in Appendix A, Table 34.

Figure 25. In-System equipment Group Protect flowchart

1. Block Protection Groups are shown in Appendix A, Table 34.
2. RP can be either at VIH or at VID when using the In-System Technique to protect the Extended Block.

Figure 26. In-System equipment Chip Unprotect flowchart

1. Block Protection Groups are shown in Appendix A, Table 34.

Figure 27. Write to Buffer and Program flowchart and Pseudo Code

1. n+1 is the number of addresses to be programmed.
2. A Write to Buffer and Program Abort and Reset mu st be issued to return the device in Read mode.

1. When the block address is specified, any address in the selected block addres s space is acceptable. However when loading Write Buffer address with data, all addresses must fall within the selected Write Buffer page. 4. DQ7 must be checked since DQ5 and DQ7 may change simultaneously. 5. If this flowchart location is reached because DQ5=’1’, then the Write to Buffer and Program command failed. If this flowchart location is reached because DQ1=’1’, then the Write to Buffer and Program command aborted. In both cases, the appropriate reset command must be issued to return the device in Read mode: a Reset command if the operation failed, a Write to Buffer and Program Abort and Reset command if the operation aborted. 6. See Table 11 and Table 12, for details on Write to Buffer and Program command sequence.

Revision history

Table 43. Document revision history 02-Aug-2005 1.0 First Issue derived from the M29DW128F/FS datasheet revision 0.5. Datasheet status updated to “FULL DATASHEET“. Times and Program, Erase Endurance Cycles. Program Error and Program during Erase Suspend operations. Table 13: Fast Program Commands, 8-bit mode. 13-Jun-2006 5 Blank Verify command added in Section 6: Command interface. Input/output supply voltage, VCCQ, removed. 10-Dec-2007 8 Applied Numonyx branding.