General Description
FM24C32U is a 32Kbit CMOS non-volatile serial EEPROM organized as 4K x 8 bit memory. This device confirms to Extended IIC 2-wire protocol that allows accessing of memory in excess of 16Kbit on an IIC bus. This serial communication protocol uses a Clock signal (SCL) and a Data signal (SDA) to synchronously clock data between a master (e.g. a microcontroller) and a slave (EEPROM). FM24C32U is designed to minimize pin count and simplify PC board layout requirements.

Features
■ Extended operating voltage: 2.7V to 5.5V
■ Up to 400 KHz clock frequency at 2.7V to 5.5V
■ Low power consumption
    —0.2mA active current typical
    —10µA standby current typical
    —1µA standby current typical (L version)
    —0.1µA standby current typical (LZ version)
■ Schmitt trigger inputs
■ 32 byte page write mode
■ Self timed write cycle (6ms typical)
■ Hardware Write Protection for upper half of the array
■ Low VCC programming lockout for VCC = 5V±10% (“H” option)
    —Internal ERASE/WRITE logic is disabled if VCC is below 3.8V
■ Endurance: 1 Million data changes
■ Data Retention: Greater than 40 years
■ Packages: 8-Pin DIP and 8-Pin SO
■ Temperature range
    —Commercial: 0°C to +70°C
    —Industrial (V): -40°C to +85°C
    —Automotive (E): -40°C to +125°C