ATMEL 28C256 Parallel EEPROM, 256K, 28-Pin DIP

The ATMEL 28C256 Parallel EEPROM is a high-performance 256K (32K x 8-bit) paged parallel memory device presented in a 28-pin DIP package. Its 256K of memory is organised as 32,768 words by 8 bits, offering a reliable storage solution for your electronic projects. Manufactured with advanced non-volatile CMOS technology, this EEPROM provides an access time of 150ns with a power dissipation of just 440mW, and a CMOS standby current of less than 200μA when deselected.

This device is accessed like static RAM for read or write cycles without the need for external components. It features a 64-byte page register that allows writing of up to 64 bytes simultaneously, alongside internal error correction for extended endurance and improved data retention. Additionally, the device includes an extra 64 bytes of EEPROM specifically for device identification or tracking.

Key Features

• CMOS and TTL compatible inputs and outputs
• JEDEC approved byte-wide pin-out
• High reliability CMOS technology
• Automatic page write operation
• Page write cycle time of 3ms (10ms maximum)
• Page write operation from 1 byte to 64 bytes
• 50mA active current
• Hardware and software data protection
• Single 5V supply
• Operating temperature range from -40°C to 85°C

With compact dimensions of 43 mm in height, 33 mm in width, and 15 mm in depth, and a lightweight design of just 0.2 grams, this through-hole mounted EEPROM is ideally suited for space-constrained applications.