DESCRIPTION
The M34C00 is a 384-bit serial EEPROM. The bottom third of the memory area (from location 00h to 0Fh) can be Write-protected using a specially designed software Write-protection mechanism. By sending the device a specific sequence, the first 128 bits of the memory become permanently Write-protected. Care must be taken when using this sequence as its effect cannot be reversed.

■ Two-Wire I2C Serial Interface Supports 400 kHz Protocol
■ 2.5 V to 5.5 V Single Supply Voltage
■ 384-bit EEPROM divided in three areas:
    – 128 bits of non-erasable memory
    – 128 bits of standard EEPROM
    – 128 bits that can be permanently Write protected (to behave as ROM)
■ Self-Timed Program Cycle
■ Enhanced ESD/Latch-Up Protection
■ More than 1 Million Erase/Write Cycles
■ More than 40 Year Data Retention