STMPE1208S_08 Datasheet, PDF (1/51 Pages) STMicroelectronics – Xpander Logic with 12-channel touchkey

STMPE1208S
Xpander Logic™ with 12-channel touchkey
Features
■ 12 touchkey capacitive sensor inputs
■ 12-bit general purpose input/output (GPIO)
■ Operating voltage 2.5 − 5.5 V
■ 98 μA in active mode, 60 μA in idle mode
■ Dual interrupt output pin
■ I²C interface (up to 400 kHz)
■ 7 kV HBM ESD protection
■ Idle and sleep mode for low power operation
■ Advanced data filtering (AFS)
■ Environment tracking calibration (ETC)
■ Individually adjustable touch variance (TVR)
setting for all channels
■ Adjustable environmental variance (EVR) for
optimal calibration
Applications
■ Notebook computers
■ Monitors
■ Set-top boxes
■ Televisions
■ Portable media players and game consoles
■ Mobile and smart phones
■ Home entertainment systems
■ Domestic appliances
QFN40
Description
The STMPE1208S is a 12-channel GPIO
capacitive touchkey sensor able to interface a
main digital ASIC via the two-line bidirectional bus
(I²C). It senses changes in capacitance using a
fully digital architecture, giving fast and accurate
results at very low power consumption. Automatic
impedance calibration ensures that changes in
environment will never affect the correct operation
of the capacitive touchkeys.
Table 1. Device summary
Order code
STMPE1208SQTR
July 2008
Package
QFN40
Rev 3
Packing
Tape and reel
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