●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
