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Description

The AT29C256 is a five-volt-only in-system Flash programmable and erasable read only memory (PEROM). Its 256K of memory is organized as 32,768 words by 8 bits. Manufactured with Atmel’s advanced nonvolatile CMOS technology, the device offers access times to 70 ns with power dissipation of just 275 mW.

Features

? Fast Read Access Time – 70 ns

? 5-volt Only Reprogramming

? Page Program Operation

– Single Cycle Reprogram (Erase and Program)

– Internal Address and Data Latches for 64 Bytes

? Internal Program Control and Timer

? Hardware and Software Data Protection

? Fast Program Cycle Times

– Page (64 Byte) Program Time – 10 ms

– Chip Erase Time – 10 ms

? DATAPolling for End of Program Detection

? Low-power Dissipation

– 50 mA Active Current

–300 ?A CMOS Standby Current

? Typical Endurance > 10,000 Cycles

? Single 5V ±10 Supply

? CMOS and TTL Compatible Inputs and Outputs

? Commercial and Industrial Temperature Ranges