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