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 µA CMOS Standby Current

• Typical Endurance > 10,000 Cycles

• Single 5V ±10 Supply

• CMOS and TTL Compatible Inputs and Outputs

• Commercial and Industrial Temperature Ranges