8-bit I2C and SMBus I/O port with interrupt, 2-kbit EEPROM and 6 address pins - # of Addresses: 64 ; I2C-bus: 400 kHz; Interrupt: 0-1 ; Max Sink Current per bit: 25 mA; Max Sink Current, per package: 100 mA; Memory size: 2 kBits; Number of bits: 8 ; Operating temperature: -40~85 Cel; Operating voltage: 2.5~3.6 VDC; Source Current per bit: 0.1 mA; Weak Pull-Up Current Source: yes