ST M35080 8 Kbit Serial SPI Bus EEPROM With Incremental Registers - Compatible with SPI Bus Serial Interface (Positive Clock SPI Modes) - Single Supply Voltage: 4.5 V to 5.5 V - 5 MHz Clock Rate (maximum) - Sixteen 16-bit Incremental Registers - Hardware Protection of the Status Register - Resizeable Read-Only EEPROM Area