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Description

The AT28C040 is a high-performance electrically erasable and programmable read only memory (E2PROM). Its 4 megabits of memory is organized as 524,288 words by 8 bits. Manufactured with Atmels advanced nonvolatile CMOS technology, the device offers access times to 200 ns with power dissipation of just 440 mW.

Features

? Read Access Time - 200 ns

? Automatic Page Write Operation

– Internal Address and Data Latches for 256 Bytes

– Internal Control Timer

? Fast Write Cycle Time

– Page Write Cycle Time - 10 ms Maximum

– 1 to 256 Byte Page Write Operation

? Low Power Dissipation

– 80 mA Active Current

? Hardware and Software Data Protection

? DATA Polling for End of Write Detection

? High Reliability CMOS Technology

– Endurance: 10,000 Cycles

– Data Retention: 10 Years

? Single 5V ± 10 Supply

? CMOS and TTL Compatible Inputs and Outputs

? JEDEC Approved Byte-Wide Pinout