AT28BV256-20PI [Microchip]

The AT28BV256 is a 256K-bit (32K x 8) EEPROM manufactured with Atmel’s advanced nonvolatile CMOS technology. It offers access times to 200 ns and low power dissipation (54 mW). Features include a single 2.7V-3.6V supply, automatic page write operation (1 to 64 bytes), fast write cycle time (10 ms max), low active current (15 mA) and standby current (20 µA CMOS), hardware and software data protection, DATA polling for end of write detection, high reliability (10,000 cycles endurance, 10 years data retention), JEDEC approved byte-wide pinout, and commercial and industrial temperature ranges.