256Kb Non-Volatile EEPROM, 5V, 50mA, CDIP-28, -55°C to 125°C
28-Pin Dual-In-Line EEPROM Memory IC, 5V, 32K Words, 150ns Access Time
256Kb Parallel CMOS RAM, 5V, 32KX8, CDIP, -55°C to 125°C
AT28C256E-15DM/883