AT27BV256_07 ATMEL | Alldatasheet

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Features

  • Fast Read Access Time – 70 ns  Dual Voltage Range Operation – Unregulated Battery Power Su pply Range, 2.7V to 3.6V or Standard 5V ± 10% Supply Range  Pin Compatible with JEDEC Standard AT27C256R  Low Power CMOS Operation – 20 µA Max (Less than 1 µA Typical) Standby for VCC = 3.6V – 29 mW Max Active at 5 MHz for V CC = 3.6V  JEDEC Standard Surface Mount Packages – 32-lead PLCC – 28-lead SOIC – 28-lead TSOP  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  Industrial Temperature Range  Green (Pb/Halide-free) Packaging Option 1. Description The AT27BV256 is a high-performance, low-power, low-voltage 262,144-bit one-time programmable read-only memory (OTP EPR OM) organized as 32K by 8 bits. It requires only one supply in the range of 2.7V to 3.6V in normal read mode operation, making it ideal for fast, portable systems using either regulated or unregulated battery power. Atmel’s innovative design tec hniques provide fast speeds that rival 5V parts while keeping the low power consumption of a 3V supply. At V CC = 2.7V, any word can be accessed in less than 70 ns. With a typical power dissipation of only 18 mW at 5 MHz and VCC = 3V, the AT27BV256 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 AT27BV256 simpli- fies system design and stretches battery lifetime even further by eliminating the need for power supply regulation. The AT27BV256 is available in industry-standard JEDEC-approved one-time programmable (OTP) plastic PLCC, SOIC and TSOP packages. All devices feature two-line control (CE, OE) to give designers the flexibility to prevent bus contention. The AT27BV256 operating with VCC at 3.0V produces TTL level outputs that are com- patible with standard TTL logic devices operating at V CC = 5.0V. At V CC = 2.7V, the part is compatible with JEDEC approved low voltage battery operation (LVBO) inter- face specifications. The device is also c apable 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. 256K (32K x 8) Unregulated Battery-Voltage High-Speed OTP EPROM AT27BV256 0601E–EPROM–12/07

0601E–EPROM–12/07 AT27BV256 2.1 28-lead SOIC Top View 2.2 32-lead PLCC Top View Note: PLCC package pins 1 and 17 are Don’t Connect. VPP A12 GND VCC A14 A13 A11 OE A10 CE NC A11 NC OE A10 CE GND NC A12 VPP NC VCC A14 A13 2.3 28-lead TSOP (Type 1) Top View OE A11 A13 A14 VCC VPP A12 A10 CE GND Atmel’s AT27BV256 has additional features to ensure high quality and efficient production use. The Rapid Programming Algorithm reduces the time required to program the part and guarantees reliable programming. Programming time is typically only 100 µs/byte. The Inte- grated Product Identification Code electronically identifies the device and manufacturer. This feature is used by industry-standard programming equipment to select the proper program- ming algorithms and voltages. The AT27BV256 programs exactly the same way as a standard 5V AT27C256R and uses the same programming equipment. 2. Pin Configurations Pin Name Function A0 - A14 Addresses O0 - O7 Outputs CE Chip Enable OE Output Enable NC No Connect

0601E–EPROM–12/07 AT27BV256 3. System Considerations Switching between active and standby conditions via the Chip Enable pin may produce tran- sient voltage excursions. Unless accommodated by the system design, these transients may exceed datasheet limits, resulting in device non-conformance. At a minimum, a 0.1 µF high frequency, low inherent inductance, ceramic capacitor should be utilized 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 stabi lize 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. 4. Block Diagram Note: 1. Minimum voltage is -0.6V DC which may undershoot to -2.0V for pulses of less than 20 ns. Maximum output pin voltage is VCC + 0.75V DC which may be exceeded if certain precautions are observed (consult application notes) and which may overshoot to +7.0V for pulses of less than 20 ns. 5. Absolute Maximum Ratings* Maximum Ratings” may cause permanent dam- age to the device. This is a stress rating only and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability Voltage on Any Pin with (1) Voltage on A9 with VPP Supply Voltage with

0601E–EPROM–12/07 AT27BV256 Notes: 1. X can be V IL or VIH. 3. Refer to Programming Characterist ics. Programming modes require VCC = 6.5V. 5. Two identifier bytes may be selected. All Ai inputs are held low (V IL), except A9 which is set to VH and A0 which is toggled low (VIL) to select the Manufacturers’ Identification byte and high (VIH) to select the Device Code byte. 6. Operating Modes Mode \\ Pin CE OE Ai V PP VCC Outputs Read(2) VIL VIL Ai V CC VCC DOUT Output Disable(2) VIL VIH X (1) VCC VCC High Z Standby(2) VIH XX V CC VCC High Z Rapid Program(3) VIL VIH Ai V PP VCC DIN PGM Verify(3) XV IL Ai V PP VCC DOUT Optional PGM Verify(3) VIL VIL Ai V CC VCC DOUT PGM Inhibit(3) VIH VIH XV PP VCC High Z Product Identification(3)(5) VIL VIL A9 = VH (4) A0 = VIH or VIL A1 - A14 = VIL VCC VCC Identification Code 7. DC and AC Operating Cond itions for Read Operation AT27BV256-70 Industrial Operating Temperature (Case) -40°C - 85°C VCC Power Supply 2.7V to 3.6V 5V ± 10%

0601E–EPROM–12/07 AT27BV256 Notes: 1. V CC must be applied simultaneously with or before VPP, and removed simultaneously with or after VPP. 2. V PP may be connected directly to VCC, except during programming. The supply current would then be the sum of ICC and IPP. 8. DC and Operating Characteristics for Read Operation Symbol Parameter Condition Min Max Units VCC = 2.7V to 3.6V ILI Input Load Current V IN = 0V to VCC ±1µ A ILO Output Leakage Current V OUT = 0V to VCC ±5µ A 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 µA 0.2 V IOL = 20 µA 0.1 V VOH Output High Voltage IOH = -2.0 mA 2.4 V IOH = -100 µA V CC - 0.2 V IOH = -20 µA V CC - 0.1 V VCC = 4.5V to 5.5V ILI Input Load Current V IN = 0V to VCC ±1µ A ILO Output Leakage Current V OUT = 0V to VCC ±5µ A 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 20 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 µA 2.4 V

0601E–EPROM–12/07 AT27BV256 10. 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 t he point when data is no longer driven. 6. When reading a AT27BV256, a 0.1 µF capacitor is required across V CC and ground to suppress spurious voltage transients. 9. AC Characteristics for Read Operation VCC = 2.7V to 3.6V and 4.5V to 5.5V Symbol Parameter Condition AT27BV256-70 UnitsMin Max tACC (3) Address to Output Delay CE = OE = VIL 70 ns tCE (2) CE to Output Delay OE = VIL 70 ns tOE (2)(3) OE to Output Delay CE = VIL 50 ns tDF (4)(5) OE or CE High to Output Float, Whichever Occurred First 40 ns tOH Output Hold from Address, CE or OE, Whichever Occurred First 0n s

0601E–EPROM–12/07 AT27BV256 11. Input Test Waveform and Measurement Level 12. Output Test Load Note: 1. Typical values for nominal supply voltage. Th is parameter is only sampled and is not 100% tested. tR, tF < 20 ns (10% to 90%) Note: CL = 100 pF including jig capacitance. 13. Pin Capacitance f = 1 MHz, T = 25°C(1) Symbol Typ Max Units Conditions CIN 48 p F V IN = 0V COUT 81 2 p F V OUT = 0V

0601E–EPROM–12/07 AT27BV256 14. Programming Waveforms(1) Notes: 1. The Input Timing Reference is 0.8V for V IL and 2.0V for VIH. 2. t OE and tDFP are characteristics of the device but must be accommodated by the programmer. 3. When programming the AT27BV256 a 0. 1 µF capacitor is required across VPP and ground to suppress spurious voltage transients.

0601E–EPROM–12/07 AT27BV256 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%. Note: 1. The AT27BV256 has the same Product Identification Code as the AT27C256R and AT27LV256A. They are all programming compatible. 15. 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 µA 2.4 V ICC2 VCC Supply Current (Program and Verify) 25 mA IPP2 VPP Current CE = VIL 25 mA VID A9 Product Identification Voltage 11.5 12.5 V 16. AC Programming Characteristics TA = 25 ± 5°C, VCC = 6.5 ± 0.25V, VPP = 13.0 ± 0.25V Symbol Parameter Test Conditions (1) Limits UnitsMin Max tAS Address Setup Time Input Rise and Fall Times: (10% to 90%) 20 ns 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 2µ s 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(2) 01 3 0 n s tVPS VPP Setup Time 2 µs tVCS VCC Setup Time 2 µs tPW CE Program Pulse Width(3) 95 105 µs tOE Data Valid from OE(2) 150 ns tPRT VPP Pulse Rise Time During Programming 50 ns 17. Atmel’s AT27BV256 Integrated Product Identification Code(1) Codes Pins Hex DataA0 O7 O6 O5 O4 O3 O2 O1 O0 M a n u f a c t u r e r 000011110 1 E D e v i c e T y p e 110001100 8 C

0601E–EPROM–12/07 AT27BV256 18. Rapid Programming Algorithm A 100 µs CE pulse width is used to program. The address is set to the first location. V CC is raised to 6.5V and V PP is raised to 13.0V. Each address is first programmed with one 100 µs CE pulse without verification. Then a verification / reprogramming loop is executed for each address. In the event a byte fails to pass verifi cation, up to 10 successi ve 100 µs pulses are applied with a verification after each pulse. If th e byte fails to verify after 10 pulses have been applied, the part is considered failed. After th e byte verifies properly, the next address is selected until all have been checked. V PP is then lowered to 5.0V and V CC to 5.0V. All bytes are read again and compared with the original data to determine if the device passes or fails.

0601E–EPROM–12/07 AT27BV256 19. Ordering Information Note: 1. The 28-pin SOIC package is not recommended for new designs.

19.1 Standard Package

(ns) ICC (mA) Ordering Code Package Operation RangeActive Standby 70 8 0.02 AT27BV256-70JI AT27BV256-70RI AT27BV256-70TI 32J 28R (1) 28T Industrial (-40° C to 85° C) Note: Not recommended for new designs. Use Green package option.

19.2 Green Package Op tion (Pb/Halide-free)

(ns) ICC (mA) Ordering Code Package Operation RangeActive Standby 70 8 0.02 AT27BV256-70JU AT27BV256-70RU AT27BV256-70TU 32J 28R (1) 28T Industrial (-40° C to 85° C) Package Type 32J 32-lead, Plastic J-leaded Chip Carrier (PLCC) 28R 28-lead, 0.330" Wide, Plastic Gull Wing Small Package (SOIC) 28T 28-lead, Plastic Thin Small Outline Package (TSOP)

0601E–EPROM–12/07 AT27BV256 20. Packaging Information 20.1 32J – PLCC DRAWING NO. REV.

2325 Orchard Parkway

San Jose, CA 95131R TITLE 32J, 32-lead, Plastic J-leaded Chip Carrier (PLCC) B32J 10/04/01 1.14(0.045) X 45˚ PIN NO. 1 IDENTIFIER 1.14(0.045) X 45˚ 0.51(0.020)MAX 0.318(0.0125) 0.191(0.0075) 45˚ MAX (3X) A B1 E2 B e E1 E D COMMON DIMENSIONS (Unit of Measure = mm) SYMBOL MIN NOM MAX NOTE Notes: 1. This package conforms to JEDEC reference MS-016, Variation AE. 2. Dimensions D1 and E1 do not include mold protrusion. Allowable protrusion is .010"(0.254 mm) per side. Dimension D1 and E1 include mold mismatch and are measured at the extreme material condition at the upper or lower parting line. 3. Lead coplanarity is 0.004" (0.102 mm) maximum. A 3.175 – 3.556 A1 1.524 – 2.413 A2 0.381 – – D 12.319 – 12.573 D1 11.354 – 11.506 Note 2 D2 9.906 – 10.922 E 14.859 – 15.113 E1 13.894 – 14.046 Note 2 E2 12.471 – 13.487 B 0.660 – 0.813 B1 0.330 – 0.533 e 1.270 TYP

0601E–EPROM–12/07 AT27BV256 20.2 28R – SOIC A 2. 39 – 2.79 A1 0.050 – 0. 356 D 1 8.00 – 1 8.50 Note 1 E 11.70 – 12.50 E1 8.59 – 8.79 Note 1 B 0. 356 – 0.50 8 C 0.20 3 – 0. 305 L 0.94 – 1.27 e 1.27 TYP PIN 1 0º ~ 8º San Jose, CA 95131 TITLE DRAWING NO. R REV. 28R, 28-lead, 0.330" Body Width, Plastic Gull Wing Small Outline (SOIC) C28R 5/18/2004 COMMON DIMENSIONS (Unit of Measure = mm) SYMBOL MIN NOM MAX NOTE A E C e D L B Note: 1. Dimensions D and E1 do not include mold Flash or protrusion. Mold Flash or protrusion shall not exceed 0.25 mm (0.010").

0601E–EPROM–12/07 AT27BV256 20.3 28T – TSOP San Jose, CA 95131 TITLE DRAWING NO. R REV. 28T, 28-lead (8 x 13.4 mm) Plastic Thin Small Outline Package, Type I (TSOP) C28T 12/06/02 PIN 1 0º ~ 5º D1 D Pin 1 Identifier Area be E A c L GAGE PLANESEATING PLANE COMMON DIMENSIONS (Unit of Measure = mm) SYMBOL MIN NOM MAX NOTE Notes: 1. This package conforms to JEDEC reference MO-183. 2. Dimensions D1 and E do not include mold protrusion. Allowable protrusion on E is 0.15 mm per side and on D1 is 0.25 mm per side. 3. Lead coplanarity is 0.10 mm maximum. A – – 1.20 A1 0.05 – 0.15 A2 0.90 1.00 1.05 D 13.20 13.40 13.60 D1 11.70 11.80 11.90 Note 2 E 7.90 8.00 8.10 Note 2 L 0.50 0.60 0.70 L1 0.25 BASIC b 0.17 0.22 0.27 c 0.10 – 0.21 e 0.55 BASIC

0601E–EPROM–12/07 Headquarters International Atmel Corporation San Jose, CA 95131 USA Tel: 1(408) 441-0311 Fax: 1(408) 487-2600 Atmel Asia Room 1219 Chinachem Golden Plaza

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