M95640-A125 M95640-A145 is ST's automotive 64Kbit serial SPI bus EEPROM, compatible with SPI bus, with 64Kbits(8Kbytes) of EEPROM, 32 bytes page size, 1/4, 1/2 or entire memory write protection, additional write lockable page(identification page), high temperature and voltage range, high clock frequency, Schmitt trigger input, short write cycle time, write cycle endurance, data retention time, ESD protection and RoHS-compliant and halogen-free(ECOPACK2®) packaging