AT27BV020 ATMEL | Alldatasheet

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Technical content

Features

  • Fast Read Access Time - 90 ns
  • Dual Voltage Range Operation – Unregulated Battery Power Supply Range, 2.7V to 3.6V or Standard 5V ± 10% Supply Range
  • Compatible with JEDEC Standard AT27C020
  • Low Power CMOS Operation –2 0 µA max. (less than 1 µA typical) Standby for VCC = 3.6V – 29 mW max. Active at 5 MHz for VCC = 3.6V
  • Wide Selection of JEDEC Standard Packages – 32-Lead PLCC – 32-Lead TSOP (8 x 20mm) – 32-Lead VSOP (8 x 14mm) – 42-Ball CBGA (8 x 8mm)
  • High Reliability CMOS Technology – 2,000V ESD Protection – 200 mA Latchup Immunity
  • Rapid™ Programming Algorithm - 100 µs/byte (typical)
  • CMOS and TTL Compatible Inputs and Outputs – JEDEC Standard for LVTTL and LVBO
  • Integrated Product Identification Code
  • Commercial and Industrial Temperature Ranges

Description

The AT27BV020 is a high-performance, low-power, low-voltage 2,097,152-bit one- time programmable read only memory (OTP EPROM) organized as 256K by 8 bits. It requires only one supply in the range of 2.7 to 3.6V in normal read mode operation, making it ideal for fast, portable systems using either regulated or unregulated battery power. AT27BV020 2-Megabit (256K x 8) Unregulated Battery-Voltage™ High Speed OTP EPROM AT27BV020 TSOP , VSOP T op View Type 1 0902A-A–10/97 Pin Configurations Pin Name Function A0 - A17 Address O0 - O7 Outputs CE Chip Enable OE Output Enable PGM Program Strobe (continued) CBGA T op View A B C D E F 1 234567 GND A17 A10 A14 A16 A15 NC A13 A11 A12 VCC PGM VCC NC NC NC NC NC NC NC VPP OE GND CE

Atmel’s innovative design techniques provide fast speeds that rival 5V parts while keeping the low power consump- tion of a 3V supply. At V CC = 2.7V, any byte can be accessed in less than 90 ns. With a typical power dissipa- tion of only 18 mW at 5 MHz and VCC = 3V, the AT27BV020 consumes less than one fifth the power of a standard 5V EPROM. Standby mode supply current is typically less than 1 µA at 3V. The AT27BV020 simplifies system design and stretches battery lifetime even further by eliminating the need for power supply regulation The AT27BV020 is available in industry standard JEDEC approved one-time programmable (OTP) plastic PLCC, TSOP and VSOP packages, as well as a 42-ball, 1 mm pitch, plastic chip-scale Ball Grid Array package (CBGA). All devices feature two-line control (CE , OE) to give design- ers the flexibility to prevent bus contention. The AT27BV020 operating with VCC at 3.0V produces TTL level outputs that are compatible with standard TTL logic devices operating at V CC = 5.0V. At VCC = 2.7V, the part is compatible with JEDEC approved low voltage battery oper- ation (LVBO) interface specifications. The device is also capable of standard 5-volt operation making it ideally suited for dual supply range systems or card products that are pluggable in both 3-volt and 5-volt hosts. Atmel's AT27BV020 has additional features to ensure high quality and efficient production use. The Rapid ™ Program- ming Algorithm reduces the time required to program the part and guarantees reliable programming. Programming time is typically only 100 µs/byte. The Integrated Product Identification Code electronically identifies the device and manufacturer. This feature is used by industry standard programming equipment to select the proper programming algorithms and voltages. The AT27BV020 programs exactly the same way as a standard 5V AT27C020 and uses the same programming equipment. System Considerations Switching between active and standby conditions via the Chip Enable pin may produce transient voltage excursions. Unless accommodated by the system design, these tran- sients may exceed data sheet limits, resulting in device non-conformance. At a minimum, a 0.1 µF high frequency, low inherent inductance, ceramic capacitor should be uti- lized for each device. This capacitor should be connected between the V CC and Ground terminals of the device, as close to the device as possible. Additionally, to stabilize the supply voltage level on printed circuit boards with large EPROM arrays, a 4.7 µF bulk electrolytic capacitor should be utilized, again connected between the V CC and Ground terminals. This capacitor should be positioned as close as possible to the point where the power supply is connected to the array.

Absolute Maximum Ratings* *NOTICE: Stresses beyond those listed under “Absolute Maxi- mum Ratings” may cause permanent damage to the device. This is a stress rating only and functional operation of the device at these or any other condi- tions beyond those indicated in the operational sec- tions of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. Note: Minimum voltage is -0.6V DC which may undershoot to - 2.0V for pulses of less than 20 ns.Maximum output pin voltage is V CC + 0.75V DC which may be exceeded if cer- tain precautions are observed (consult application notes) and which may overshoot to +7.0V for pulses of less than 20 ns. Voltage on Any Pin with (1) Voltage on A9 with VPP Supply Voltage with Operating Modes Notes: 1. X Can be VIL or VIH. 3. Refer to Programming Characteristics. Programming modes requires VCC = 6.5V . 5. T wo identifier bytes may be selected. All Ai inputs are held low (VIL), except A9 which is set to VH and A0 which is toggled low (VIL) to select the Manufacturer’s Identification byte and high (VIH) to select the Device Code byte. Mode / Pin CE OE PGM Ai V PP VCC Outputs Read (2) VIL VIL X(1) Ai X V CC (2) D OUT Output Disable(2) X V IH XX X V CC (2) High Z Standby(2) VIH XX X X V CC (2) High Z Rapid Program(3) VIL VIH VIL Ai V PP VCC (3) D IN PGM Verify(3) VIL VIL VIH Ai V PP VCC (3) D OUT PGM Inhibit(3) VIH XX X V PP VCC (3) High Z Product Identification(3)(5) VIL VIL X A9 = VH (4) A0 = VIH or VIL A1 - A17 = VIL XV CC (3) Identification Code

DC and AC Operating Conditions for Read Operation DC and Operating Characteristics for Read Operation Notes: 1. VCC must be applied simultaneously with or before VPP, and removed simultaneously with or after VPP. 2. VPP may be connected directly to VCC , expect during programming. The supply current would then be the sum of ICC and IPP. AT27BV020 -90 -12 -15 Operating Temperature (Case) VCC Power Supply 5V ± 10% 5V ± 10% 5V ± 10% Symbol Parameter Condition Min Max Units VCC = 2.7V to 3.6V ILI Input Load Current V IN = 0V to VCC ±1 µA ILO Output Leakage Current V OUT = 0V to VCC ±5 µA IPP1 (2) VPP (1) Read/Standby Current V PP = VCC 10 µA ISB VCC (1) Standby Current ISB1 (CMOS), CE = VCC ± 0.3V 20 µA ISB2 (TTL), CE = 2.0 to VCC + 0.5V 100 µA ICC VCC Active Current f = 5 MHz, I OUT = 0 mA, CE = VIL, VCC = 3.6V 8 mA VIL Input Low Voltage VCC = 3.0 to 3.6V -0.6 0.8 V VCC = 2.7 to 3.6V -0.6 0.2 x V CC V VIH Input High Voltage VCC = 3.0 to 3.6V 2.0 V CC + 0.5 V VCC = 2.7 to 3.6V 0.7 x V CC VCC + 0.5 V VOL Output Low Voltage IOL = 2.0 mA 0.4 V IOL = 100 µA0 . 2 V IOL = 20 µA0 . 1 V VOH Output High Voltage IOH = -2.0 mA 2.4 V IOH = -100 µAV CC - 0.2 V IOH = -20 µAV CC - 0.1 V VCC = 4.5V to 5.5V ILI Input Load Current V IN = 0V to VCC ±1 µA ILO Output Leakage Current V OUT = 0V to VCC ±5 µA IPP1 (2) VPP (1) Read/Standby Current V PP = VCC 10 µA ISB VCC (1) Standby Current ISB1 (CMOS), CE = VCC ± 0.3V 100 µA ISB2 (TTL), CE = 2.0 to VCC + 0.5V 1 mA ICC VCC Active Current f = 5 MHz, I OUT = 0 mA, CE = VIL 25 mA VIL Input Low Voltage -0.6 0.8 V VIH Input High Voltage 2.0 V CC + 0.5 V VOL Output Low Voltage I OL = 2.1 mA 0.4 V VOH Output High Voltage I OH = -400 µA2 . 4 V = Preliminary Information

AC Characteristics for Read Operation (VCC = 2.7V to 3.6V and 4.5V to 5.5V) Note: 2,3,4,5. - see AC Waveforms for Read Operation AC Waveforms for Read Operation(1) 2. OE may be delayed up to tCE - tOE after the falling edge of CE without impact on tCE . 3. OE may be delayed up to tACC - tOE after the address is valid without impact on tACC . 4. This parameter is only sampled and is not 100% tested. 5. Output float is defined as the point when data is no longer driven. Symbol Parameter Condition AT27BV020 Units -90 -12 -15 Min Max Min Max Min Max t ACC (3) Address to Output Delay CE = OE = VIL 90 120 150 ns tCE (2) CE to Output Delay OE = VIL 90 120 150 ns tOE (2)(3) OE to Output Delay CE = VIL 50 50 60 ns tDF (4)(5) OE or CE High to Output Float, whichever occurred first 40 40 50 ns tOH Output Hold from Address, CE or OE, whichever occurred first 0 00 n s = Preliminary Information

Input Test Waveform and Measurement LevelInput Test Waveform and Measurement Level Pin Capacitance(1) (f = 1 MHz, T = 25°C) Note: T ypical values for nominal supply voltage. This parameter is only sampled and is not 100% tested. Typ Max Units Conditions C IN 48 p F V IN = 0V C OUT 81 2 p F V OUT = 0V Note: CL = 100 pF including jig capacitance. tR , tF < 20 ns (10% to 90%) Output Test Load

Programming Waveforms (1) Notes: 1. The Input Timing Reference is 0.8V for VIL and 2.0V for VIH. 2. tOE and tDFP are characteristics of the device but must be accommodated by the programmer. 3. When programming the A T27BV020 a 0.1 µF capacitor is required across VPP and ground to suppress spurious voltage transients. DC Programming Characteristics TA = 25 ± 5°C, VCC = 6.5 ± 0.25V, VPP = 13.0 ± 0.25V Symbol Parameter Test Conditions Limits UnitsMin Max ILI Input Load Current V IN = VIL,VIH ±10 µA VIL Input Low Level -0.6 0.8 V VIH Input High Level 2.0 V CC + 0.5 V VOL Output Low Voltage I OL = 2.1 mA 0.4 V VOH Output High Voltage I OH = -400 µA2 . 4 V ICC2 VCC Supply Current (Program and Verify) 40 mA IPP2 VPP Supply Current CE = PGM = VIL 20 mA VID A9 Product Identification Voltage 11.5 12.5 V

AC Programming Characteristics TA = 25 ± 5°C, VCC = 6.5 ± 0.25V, VPP = 13.0 ± 0.25V Notes: 1. V CC must be applied simultaneously or before VPP and removed simultaneously or after VPP. 2. This parameter is only sampled and is not 100% tested. Output Float is defined as the point where data is no longer driven —see timing diagram. 3. Program Pulse width tolerance is 100 µsec ± 5%. Atmel’s 27BV020 Integrated Product Identification Code(1) Note: The A T27BV020 has the same Product Identification Code as the A T27C020. Both are programming compatible. Symbol Test Conditions(1) AC Conditions of Test Limits UnitsParameter Min Max tAS Address Setup Time Input Rise and Fall Times (10% to 90%) 20ns Input Pulse Levels 0.45V to 2.4V Input Timing Reference Level 0.8V to 2.0V Output Timing Reference Level 0.8V to 2.0V 2 µs tCES CE Setup Time 2 µs tOES OE Setup Time 2 µs tDS Data Setup Time 2 µs tAH Address Hold Time 0 µs tDH Data Hold Time 2 µs tDFP OE High to Output Float Delay(3) 0 130 ns tVPS VPP Setup Time 2 µs tVCS VCC Setup Time 2 µs tPW PGM Program Pulse Width(2) 95 105 µs tOE Data Valid from OE 150 ns tPRT VPP Pulse Rise Time During Programming 50 ns Codes Pins Hex DataA0 O7 O6 O5 O4 O3 O2 O1 O0 Manufacturer 000011110 1 E Device Type 110000110 8 6

Rapid Programming Algorithm A 100 µ s PGM pulse width is used to program. The address is set to the first location. VCC is raised to 6.5V and VPP is raised to 13.0V. Each address is first programmed with one 100 µs PGM pulse without verification. Then a verification/reprogramming loop is executed for each address. In the event a byte fails to pass verification, up to 10 successive 100 µs pulses are applied with a verification after each pulse. If the byte fails to verify after 10 pulses have been applied, the part is considered failed. After the byte verifies properly, the next address is selected until all have been checked. V PP is then lowered to 5.0V and VCC to 5.0V. All bytes are read again and compared with the origi- nal data to determine if the device passes or fails.

Ordering Information

tACC (ns) ICC (mA) VCC = 3.6V Ordering Code Package Operation RangeActive Standby 90 8 0.02 AT27BV020-90CC AT27BV020-90JC AT27BV020-90TC A T27BV020-90VC 42C 32J 32T 32V Commercial (0°C to 70°C) 8 0.02 AT27BV020-90CI AT27BV020-90JI AT27BV020-90TI A T27BV020-90VI 42C 32J 32T 32V Industrial (-40°C to 85°C) 120 8 0.02 A T27BV020-12CC AT27BV020-12JC AT27BV020-12TC A T27BV020-12VC 42C 32J 32T 32V Commercial (0°C to 70°C) 8 0.02 A T27BV020-12CI AT27BV020-12JI AT27BV020-12TI A T27BV020-12VI 42C 32J 32T 32V Industrial (-40°C to 85°C) 150 8 0.02 A T27BV020-15CC AT27BV020-15JC AT27BV020-15TC A T27BV020-15VC 42C 32J 32T 32V Commercial (0°C to 70°C) 8 0.02 A T27BV020-15CI AT27BV020-15JI AT27BV020-15TI A T27BV020-15VI 42C 32J 32T 32V Industrial (-40°C to 85°C) Package Type 42C 42-Ball, Plastic Chip-Scale Ball Grid Array (CBGA) (8 x 8mm) 32J 32-Lead, Plastic J-Leaded Chip Carrier (PLCC) 32T 32-Lead, Plastic Thin Small Outline Package (TSOP) (8 x 20mm) 32V 32-Lead, Plastic Thin Small Outline Package (VSOP) (8 x 14mm) = Preliminary Information