Description
The STMPE1600 is a GPIO (general purpose input/output) port expander able to interface a main digital ASIC via the two-line bidirectional bus (I2C). A separate GPIO expander IC is often used in mobile multimedia platforms to solve the problems of the limited amount of GPIOs typically available on the digital engine. I/O expanders provide a simple solution when additional I/O are needed for several interface functions such as sensors, pushbuttons, LEDs, fans, etc. The STMPE1600 offers great flexibility as each I/O can be configured as input or output. The device has been designed with very low quiescent current and includes a wakeup feature for each I/O, to optimize the power consumption of the device. QFN24 (4 x 4 mm)

Features
■ 16 GPIOs which default to 16 inputs on power- up
■ Serial I2C interface (0 to 400 kHz) to the host with noise filter
■ Operating voltage 1.65 V - 3.6 V
■ I/O voltage 1.65 V - 3.6 V
■ Interrupt output pin
■ Internal power-on-reset
■ Wakeup feature on each I/O
■ Up to 8 devices sharing the same bus
■ (3 address pins)
■ 8 mA current drive/sink on each GPIO at 3.3 V
■ < 1µA suspend current
■ ESD protection exceeds 2 KV HBM per JESD22-A114
■ Latch-up testing exceeding 100 mA

Applications
■ Portable media players
■ Game consoles
■ Mobile phones
■ Smart phones