8-bit port expander Xpander logic
Features
■ 8 GPIO ■ Operating voltage 1.65V - 3.6V ■ I/O voltage 1.65V-3.6V ■ Interrupt output pin ■ Reset input pin ■ W...
Description
Features
■ 8 GPIO ■ Operating voltage 1.65V - 3.6V ■ I/O voltage 1.65V-3.6V ■ Interrupt output pin ■ Reset input pin ■ Wake up feature on each I/O ■ Up to 2 devices sharing the same bus
(1 address line) ■ <1µA suspend current
Application
■ Portable media player, Game console ■ Mobile phone, Smart phone
STMPE801
8-bit port expander Xpander logic
QFN16L
SO-16
Description
The STMPE801 is a GPIO (General Purpose Input / Output) port expander able to interface a main digital ASIC via the two-line bidirectional bus (I2C); separate GPIO Expander IC is often used in Mobile-Multimedia platforms to solve the problems of the limited amounts of GPIOs usually available on the Digital Engine. The STMPE801 offers great flexibility as each I/Os is configurable as input, output. This device has been designed very low quiescent current, and includes wake up feature for each I/O, to optimize the power consumption of the IC.
Table 1. Device summary Order codes
STMPE801QTR STMPE801MTR
July 2007
Package QFN16L (2.6mm x 1.8mm)
SO-16
Rev 4
Packaging Tape and reel (3000 per reel) Tape and reel (2500 per reel)
1/26
www.st.com
26
Contents
Contents
STMPE801
1
Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2
Pin settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.1 Pin connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2...
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