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STMPE811 Datasheet(PDF) 1 Page - STMicroelectronics

Part No. STMPE811
Description  8-bit port expander with advanced touch screen controller
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STMPE811 Datasheet(HTML) 1 Page - STMicroelectronics

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Data Brief
For further information contact your local STMicroelectronics sales office.
July 2007
Rev 1
1/3
3
STMPE811
8-bit port expander with advanced touch screen controller
Features
8 GPIOs
1.8-3.3V operating voltage
Integrated 4-wire touch screen controller
Interrupt output pin
Wake-up feature on each I/O
SPI and I2C interface
Up to 2 devices sharing the same bus in I2C
mode (1 address line)
8-input 12-bit ADC
Touch screen controller buffer depth of 128
Touch screen movement detection algorithm to
avoid excessive data
8kV HBM ESD protection
Description
The STMPE811 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 amounts of GPIOs usually
available on the digital engine.
The STMPE811 offers great flexibility as each
I/Os can be configured as input, output or specific
functions. The device has been designed with
very low quiescent current and includes a wake-
up feature for each I/O, to optimize the power
consumption of the IC.
A 4-wire touch screen controller is built into the
STMPE811. The touch screen controller is
enhanced with movement tracking algorithm, 128-
depth buffer and a programmable active window
feature.
QFN16
TSSOP16
www.st.com
Table 1. Device summary
Order code
Package
Packaging
STMPE811QTR
QFN16
Tape and reel
STMPE811TTR
TSSOP16
Tape and reel


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