AN2466 Datasheet, PDF (1/13 Pages) STMicroelectronics – STMPE801 - Hardware Interface guide

AN2466
Application note
STMPE801 - Hardware Interface guide
Introduction
STMPE801 is an eight-bit port expander that can be interfaced to the main digital ASIC or
processor via the two-line bidirectional I²C bus. The digital engines in mobile multimedia
platforms usually come with a limited number of I/Os. The port expander ICs can be used to
increase the number of I/Os or control signals in such applications.
STMPE801 can be used in advanced digital platforms such as:
● Portable media players
● Game consoles
● Mobile phones
● Smart phones etc.
This application note explains the setup and hardware interfacing of the device to the main
processor.
March 2007
Rev 1
1/13
www.st.com