General Description:
The NM24C65U is a 64K (65,536) bit serial interface CMOS EEPROM (Electrically Erasable Programmable Read-Only Memory). This device fully conforms to the Extended I2C™ 2-wire protocol which uses Clock (SCL) and Data I/O (SDA) pins to synchronously clock data between the "master" (for example a microprocessor) and the "slave" (the EEPROM device). In addition, the serial interface allows a minimal pin count packaging designed to simplify PC board layout requirements and offers the designer a variety of low voltage and low power options.
   
Features
■ The I2C™ interface allows the smallest I/O pincount of any
    EEPROM interface
■ 32 byte page write mode to minimize total write time per byte
■ Low VCC programming lockout (3.8V)
    — "H" option (Standard VCC range) parts only
■ Typical 200µA active current (ICCA)
■ Typical 1µA standby current (ISB) for "L" devices and 0.1µA
    standby current for "LZ" devices
■ Endurance: Up to 1,000,000 data changes
   
Functions
■ I2C™ compatible interface
■ 65,536 bits organized as 8,192 x 8
■ 100 KHz or 400 KHz operation
■ Extended 2.7V – 5.5V operating voltage
■ Self timed programming cycle (6ms typical)
■ "Programming complete" indicated by ACK polling
■ Memory "Upper Block" Write Protect pin