AT29C256-70PI Atmel, AT29C256-70PI Datasheet

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... Five-volt-only commands determine the operation of the device. Reading data out of the device is similar to reading from a static RAM. Reprogramming the AT29C256 is performed on a page basis; 64 bytes of data are loaded into the device and then simultaneously programmed. The contents of the entire device may be erased by using a six-byte software code (although erasure before programming is not needed) ...

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... Pin Configurations Pin Name A0 - A14 I/ 2.1 PLCC and LCC Top View Note: 2.2 TSOP Top View Type 1 AT29C256 2 Function Addresses Chip Enable Output Enable Write Enable Data Inputs/Outputs No Connect Don’t Connect I/ PLCC package pins 1 and 17 are DON’T CONNECT. ...

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... Read The AT29C256 is accessed like a static RAM. When CE and OE are low and WE is high, the data stored at the memory location determined by the address pins is asserted on the outputs. The outputs are put in the high impedance state whenever high. This dual-line con- trol gives designers flexibility in preventing bus contention ...

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... Toggle Bit In addition to DATA polling the AT29C256 provides another method for determining the end of a program or erase cycle. During a program or erase operation, successive attempts to read data from the device will result in I/O6 toggling between one and zero. Once the program cycle has completed, I/O6 will stop toggling and valid data will be read ...

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... 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 + 0.6V device reliability. CC AT29C256 5 ...

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... Ai D OUT High Z High Z X High Z A1-A14 = Manufacturer Code A1-A14 = Device Code Manufacturer Code Device Code IH Min Max 10 10 300 3 50 0.8 2.0 0.45 2.4 4.2 AT29C256-15 0°C - 70°C -40°C - 85°C 5V± 10% (4) (4) (4) (4) Units µA µA µ 0046S–FLASH–2/07 ...

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... This parameter is characterized and is not 100% tested. 0046S–FLASH–2/07 AT29C256-70 AT29C256-90 Min Max Min (1)(2)(3)( after the address transition without impact on t ACC after the falling edge of CE without impact AT29C256 AT29C256-12 AT29C256-15 Max Min Max Min Max 90 120 150 90 120 150 ACC after an address change CE ...

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... Input Test Waveforms and Measurement Level t R 12. Output Test Load 13. Pin Capacitance ( MHz 25°C Symbol Typ OUT Note: 1. This parameter is characterized and is not 100% tested. AT29C256 < Max 6 12 Units Conditions OUT 0046S–FLASH–2/07 ...

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... Chip Select Set-up Time CS t Chip Select Hold Time CH t Write Pulse Width ( Data Set-up Time Data, OE Hold Time DH OEH t Write Pulse Width High WPH 15. AC Byte Load Waveforms 15.1 WE Controlled 15.2 CE Controlled 0046S–FLASH–2/07 AT29C256 Min Max Units 100 ...

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... Program Cycle Waveforms Notes through A14 must specify the page address during each high-to-low transition of WE (or CE must be high when WE and CE are both low. 3. All bytes that are not loaded within the page being programmed will be indeterminate. AT29C256 10 Min 100 (1)(2)(3) ...

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... OE must be high when WE and CE are both low. 3. All bytes that are not loaded within the page being programmed will be indeterminate. 0046S–FLASH–2/07 19. Software Data Protection Disable Algorithm (2) PAGE (64 BYTES) (1)(2)(3) AT29C256 (1) LOAD DATA AA TO ADDRESS 5555 LOAD DATA 55 TO ADDRESS 2AAA ...

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... AC Read Characteristics. OE 24. Toggle Bit Waveforms Notes: 1. Toggling either both OE and CE will operate toggle bit. 2. Beginning and ending state of I/O6 will vary. 3. Any address location may be used but the address should not vary. AT29C256 12 (1) (1) (1)(2)(3) Min Typ ...

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... The device returns to standard operation mode. 5. Manufacturer Code is 1F. The Device Code is DC. 0046S–FLASH–2/07 26. Software Product Identification Exit (2)(3)( AT29C256 (1) LOAD DATA AA TO ADDRESS 5555 LOAD DATA 55 TO ADDRESS 2AAA LOAD DATA F0 TO ADDRESS 5555 PAUSE 10 mS ...

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... AT29C256 14 NORMALIZED SUPPLY CURRENT vs. TEMPERATURE 0.8 -55 - TEMPERATURE (C) NORMALIZED SUPPLY CURRENT vs. ADDRESS FREQUENCY 25C FREQUENCY (MHz) NORMALIZED SUPPLY CURRENT vs. SUPPLY VOLTAGE 0.6 4.50 4.75 5.00 SUPPLY VOLTAGE ( 125 5.25 5.50 0046S–FLASH–2/07 ...

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... Plastic Thin Small Outline Package (TSOP) 0046S–FLASH–2/07 Ordering Code AT29C256-70JC AT29C256-70TC AT29C256-70JI AT29C256-70TI AT29C256-90JC AT29C256-90TC AT29C256-90JI AT29C256-90TI AT29C256-12JC AT29C256-12TC AT29C256-12JI AT29C256-12TI AT29C256-15JC AT29C256-15TC AT29C256-15JI AT29C256-15TI Package Type AT29C256 Package Operation Range 32J Commercial 28T (0° to 70° C) 32J Industrial 28T (-40° ...

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... 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. 2325 Orchard Parkway San Jose, CA 95131 R AT29C256 16 1.14(0.045) X 45˚ PIN NO. 1 IDENTIFIER E1 E ...

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... Lead coplanarity is 0.10 mm maximum. 2325 Orchard Parkway San Jose, CA 95131 R 0046S–FLASH–2/07 PIN SEATING PLANE A1 TITLE 28T, 28-lead (8 x 13.4 mm) Plastic Thin Small Outline Package, Type I (TSOP) AT29C256 0º ~ 5º GAGE PLANE COMMON DIMENSIONS (Unit of Measure = mm) SYMBOL MIN NOM MAX A – – ...

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... Disclaimer: The information in this document is provided in connection with Atmel products. No license, express or implied, by estoppel or otherwise, to any intellectual property right is granted by this document or in connection with the sale of Atmel products. EXCEPT AS SET FORTH IN ATMEL’S TERMS AND CONDI- TIONS OF SALE LOCATED ON ATMEL’S WEB SITE, ATMEL ASSUMES NO LIABILITY WHATSOEVER AND DISCLAIMS ANY EXPRESS, IMPLIED OR STATUTORY WARRANTY RELATING TO ITS PRODUCTS INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT ...