The ST93C56 is a 2K bit Electrically Erasable Programmable Memory (EEPROM) fabricated with SGS-THOMSON's High EnduranceSingle Polysilicon CMOS technology. The memory is accessed through a serial input (D) and output (Q). The 2K bit memory is divided into either 256 x 8 bit bytes or 128 x 16 bit words. The organization may be selected by a signal applied on the ORG input.