A278308A AMICC | Alldatasheet

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Technical content

(October, 2003, Version 1.0) AMIC Technology, Corp. Document Title 256K X 8 OTP CMOS EPROM

Revision History

Rev. No. History Issue Date Remark

0.0 Initial issue Septem ber 29, 2000 Preliminary

0.1 Change Program Verify VCC to 6.25V March 14, 2001

1.0 Final version release October 7, 2003 Final

(October, 2003, Version 1.0) 1 AMIC Technology, Corp.

Features

„ 262,144 X 8 bit organization „ Programming voltage: 12.75V „ Access time: 55/70 ns (max.) „ Current: Operating: 30mA (max.) at 5MHz Standby: 100 µA (max.) „ All inputs and outputs are directly TTL-compatible „ Available in 32-pin DIP and 32-pin PLCC packages General Description The A278308A chip is a high-performance 2,097,152 bit one-time programmable read only memory (OTP EPROM) organized as 256K by 8 bits. The A278308A requires only 5V power supply in normal read mode operation and any input signals are TTL levels. The A278308A is available in industry standard 32 pin dual-in-line and 32 pin PLCC packages. Pin Configurations „ DIP „ PLCC VPP A16 A15 A12 I/O I/O1 I/O3 I/O4 I/O5 A11 A13 VCC A10 A278308A 14 19 I/O2 GND I/O6 I/O7 CE A14 1815 16 17 OE PGM A17 A278308AL I/O7 CE I/O0 A13 A14 A12 A15 A16 VPP VCC A17 I/O I/O2 GND I/O4 I/O5 I/O6 A11 OE A10 I/O3 PGM

(October, 2003, Version 1.0) 2 AMIC Technology, Corp. Pin Configurations Pin Name Function A0-A17 Address Inputs I/O7-I/O0 Data Inputs / Outputs CE Chip Enable OE Output Enable PGM Program Strobe VPP Program Power Supply VCC Power Supply GND Ground Operating Modes and Truth Table Mode CE OE PGM A0 A1 A9 VPP VCC I/O 7-I/O0 Read V IL V IL X X X X VCC VCC Data Out Output Disable V IL V IH X X X X VCC VCC Hi-Z Standby V IH X X X X X VCC VCC Hi-Z Program V IL V IH V IL Pulse X X X 12.75V 6.25V Data In Program Verify V IL V IL V IH X X X 12.75V 6.25V Data Out Program Inhibit V IH X X X X X 12. 75V 6.25V Hi-Z Manufacturer Code(3) V IL V IL V IH V IL V IL V ID VCC VCC 37H Device Code(3) V IL V IL V IH V IH V IL V ID VCC VCC 64H Continuation Code(3) V IL V IL V IH V IL V IH V ID VCC VCC 7FH Notes: 1. X = Either V IH or VIL. 2. V ID = 12V ± 0.5V. 3. A2 ~ A8 = A10 ~ A17 = V IL (For auto identification)

(October, 2003, Version 1.0) 3 AMIC Technology, Corp. Functional Description Read Mode The A278308A has two control functions, both of which must be logically active in order to obtain data at the outputs. CE is the power control and should be used for device selection. OE is the output control and should be used to data to the output pins, which is independent of device selection. Assuming that addresses are stable, address access time (t AA) is equal to the delay from CE to output (t CE). Data is available at the output after a delay (tOE) from the falling edge of OE , as long as CE has been low and the addresses have been stable for at least t ACC - tOE. Standby Mode The A278308A has a standby mode which reduces the active current from 30mA to 100 µA. The A278308A is placed in the standby mode by applying a CMOS high signal to CE . When in the standby mode, the output are in a high impedance state, independent of the OE . Auto Identify Mode The auto identify mode allows the reading out of a binary code from a EPROM that w ill identify its manufacturer and type. This mode is intended for use by programming equipment for the purpose of automatically matching the device to be programmed with its corresponding programming algorithm. To activate the mode, the programming equipment must apply 12.0V ± 0.5V on address line A9 of the A278308A. Three identification code can be read from data output pin by toggling A0 and A1. The other addresses must be held at V IL during this mode. Byte 0 (with A0 at VIL, A1 at VIL) represents the manufacturer code which is 37H. Byte 1 and Byte 2 represent the device code and continuation code, which is 64H and 7FH respectively. All identifiers for these codes will possess odd parity, with MSB (IO 7) defined the parity bit. Absolute Maximum Ratings* Ambient Operating Temperature (TA) . . . -10°C to +85°C Applied Input Voltage (VI): Output Voltage (V *Comments Stresses above those listed under "Absolute Maximum Ratings" may cause permanent damage to this device. These are stress ratings only. Functional operation of this device at these or any other conditions above those indicated in the operational sections of this specification is not implied or intended. Exposure to the absolute maximum rating conditions for extended periods may affect device reliability. Notes: 1. During voltage transitions, the input may undershoot GND to -2.0V for periods less than 20 ns. Maximum DC voltage on input and I/O may overshoot to VCC + 2.0V for periods less than 20 ns. 2. When transitions, A9 and VPP may under shoot GND to -2.0V for periods le ss than 20 ns. Maximum DC input voltage on A9 and VPP is +13.5V which may overs hoot to 14.0V for period less than 20 ns.

(October, 2003, Version 1.0) 4 AMIC Technology, Corp. Read Mode DC Electrical Characteristics (Ta = 0°C to 70°C, VCC = 5V ± 10%, VPP = VCC) Symbol Parameter Min. Max. Unit Conditions VOH Output High Voltage 2.4 V IOH = -400µA VOL Output Low Voltage 0.4 V I OL = 2.1mA VIH Input High Voltage 2.0 VCC + 0.5 V VIL Input Low Voltage -0.5 0.8 V ILI Input Leakage Current -1 +1 µA VCC = max. Vin = 0V to VCC ILO Output Leakage Current -1 +1 µA VCC = max. Vout = 0V to VCC ICC VCC Read Operating Current mA VCC = max. CE = VIL, OE = VIL Iout = 0mA, at 5MHz ISB VCC Standby Current (TTL) 1 mA VCC = max. CE = VIH ISB1 VCC Standby Current (CMOS) 100 µA VCC = max. CE = VCC - 0.2V IPP VPP Current During Read 10 µA CE = OE = VIL, VPP = VCC IID A9 Auto Select Current 100 µA A9 = VID, VCC = max. Capacitance (TA = 25°C, f = 1.0MHz) Symbol Parameter Min. Max. Unit Conditions CIN Input Capacitance 8 pF V IN = 0V COut Output Capacitance 8 pF V Out = 0V * These parameters are sampled and not 100% tested.

(October, 2003, Version 1.0) 5 AMIC Technology, Corp. Read Mode AC Characteristics (Ta = 0°C to 70°C, VCC = 5V ± 10%, VPP = VCC) Symbol Parameter 55ns 70ns Unit Min. Max. Min. Max. tCYC Cycle Time 55 70 ns tAA Address Access Time 55 70 ns tCE Chip Enable Access Time 55 70 ns tOE Output Enable Access Time 30 35 ns tOH Output Hold after Address, CE or OE , whichever Occurred First 0 0 ns tHZ Output High Z Delay 20 20 ns Read Mode Switching Waveforms tOH tHZ High-Z tAA tOE tCE Valid Output Address ValidADDRESS CE OE OUTPUT tCYC

(October, 2003, Version 1.0) 6 AMIC Technology, Corp. AC Measurement Conditions for 55 ns c Input Rise and Fall Times ≤ 10 ns d Input Pulse Voltage: 0V to 3Volt e Input and Output Timing Ref. Voltage: 1.5Volt 3.0V 1.5V 1.5V TEST POINTS INPUT OUTPUT for 70 ns c Input Rise and Fall Times ≤ 10 ns d Input Pulse Voltage: 0.4V to 2.4Volt e Input and Output Timing Ref. Voltage: 0.8V to 2.0Volt 2.4V 0.4V 2.0V 2.0V TEST POINTS INPUT OUTPUT 0.8V0.8V AC Testing Load Circuit CL = 30pF or 100pF OUT 3.3KΩ 1N914 1.3V DEVICE UNDER TEST CL = 30pF for 55 ns CL = 100pF for 70/90 ns CL includes JIG capacitance

(October, 2003, Version 1.0) 7 AMIC Technology, Corp. Programming and Program Verify The programming flowchart is shown in Page 10. The A278308A is shipped with all bits being set to "1". Programming causes relevant bits to be changed to "0". The programming mode is started by setting VCC to +6.25V and VPP to +12.75V, while CE and PGM are at VIL, and OE is at V IH. Data to be programmed can be directly input in the 8 bit format through the data bus. The write programming algor ithm reduces programming time by using 100 µs pulse followed by a byte verification to determine whether the byte has been successfully programmed. If the data does not pass the verification, an additional pulse programming is applied for a maximum of 25 pulses. On completion of 1 byte programming and, The verified address is incremented. After the final address is completed, all bytes are verified again with VCC = 5.0 Volt. Program Inhibit This mode is used to program one of multiple A278308A whose OE , PGM , VPP, VCC, address bus and data bus are connected in parallel. When programming is performed, other A278308A can be inhibited from being programmed by setting their CE pins to VIH. Programming Mode DC Characteristics (Ta = 0°C to 70°C, VCC = 6.25V ± 0.25V, VPP = 12.75V ± 0.25V) Symbol Parameter Min. Max. Unit Test Conditions VOH Output High Voltage 2.4 V IOH = -400µA VOL Output Low Voltage 0.4 V I OL = 2.1mA VIH Input High Voltage 2.0 VCC + 0.5 V VIL Input Low Voltage -0.5 0.8 V ILI Input Leakage Current -1 +1 µA VCC = max. Vin = 0V to VCC ICC VCC Current During Program 50 mA IPP VPP Current During Program 50 mA CE = VIL VID A9 Auto Select Voltage 11.5 12.5 V A9 = V ID VCC1 Programming Supply Voltage 6.0 6.5 V VPP1 Programming Voltage 12.5 13 V Note: VCC must be applied simultaneously or before VPP and removed simultaneously or after VPP.

(October, 2003, Version 1.0) 8 AMIC Technology, Corp. Programming Mode AC Characteristics (Ta = 0°C to 70°C, VCC= 6.25V ± 0.25V, VPP = 12.75V ± 0.25V) Symbol Parameter Min. Max. Unit tAS Address Valid to Program Low 2 µs tDS Input Valid to Program Low 2 µs tVPS VPP High to Program Low 2 µs tVCS VCC High to Program Low 2 µs tCES CE Low to Program Low 2 µs tPW Program Pulse Width 95 105 µs tDH Program High to Input transition 2 µs tOES Input Transition to OE Low 2 µs tOE OE Low to Output Valid 100 ns tOHZ OE High to Output Hi-Z 130 ns tAH OE High to Address Transition 0 ns

(October, 2003, Version 1.0) 9 AMIC Technology, Corp. Programming and Verify Mode AC Waveforms tOES tPWtCES tVCS tVPS tDS tAS PROGRAM PROGRAM VERIFY VALID DATA IN DATA OUT tDH tOE tOHZ tAH ADDRESS DATA VPP VCC CE PGM OE VIH VIL VIH VIH VCC VCC1 VCC VPP1 VIL VIH VIL VIL

(October, 2003, Version 1.0) 10 AMIC Technology, Corp. Programming Flowchart START ADDRESS=FIRST LOCATION VCC=6.25V VPP=12.75V X = 0 PROGRAM ONE 100 s PULSE INCREMENT X X = 25? VERIFY BYTE LAST ADDRESS VCC=VPP=5.0V VERIFY ALL BYTES ? DEVICE PASSED DEVICE FAILED INCREMENT ADDRESS FAIL NO YES NO PASS YES FAIL PASS VERIFY BYTE PASS FAIL VERIFY SECTION INTERACTIVE SECTION

(October, 2003, Version 1.0) 11 AMIC Technology, Corp.

Ordering Information

Part No. Access Time (ns) Operating Current Max. (mA) at 5MHz Standby Current Max. (µA) Package A278308A-55 55 30 100 32Pin DIP A278308AL-55 55 30 100 32Pin PLCC A278308A-70 70 30 100 32Pin DIP A278308AL-70 70 30 100 32Pin PLCC

(October, 2003, Version 1.0) 12 AMIC Technology, Corp.

Package Information

P-DIP 32L Outline Dimensions unit: inches/mm EA2 AL EA D C θ B Base Plane Seating Plane e Dimensions in inches Dimensions in mm Symbol Min Nom Max Min Nom Max Notes: 1. The maximum value of dimension D includes end flash. 2. Dimension E does not include resin fins.

(October, 2003, Version 1.0) 13 AMIC Technology, Corp. PLCC 32L Outline Dimension unit: inches/mm A1 A2 A e D y HD D GD b GE c 21 29 E HE L θ Dimensions in inches Dimensions in mm Symbol Min Nom Max Min Nom Max Notes: 1. Dimensions D and E do not include resin fins. 2. Dimensions GD & GE are for PC Board surface mount pad pitch design reference only.