STMPE1208S_08 datasheet(1/51 Pages) STMICROELECTRONICS

Part #	STMPE1208S

Description	Xpander Logic with 12-channel touchkey

PDF	51 Pages

Scroll/Zoom	100%

Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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1 / 51 page

July 2008

Rev 3

1/51

51

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

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.

QFN40

Table 1.

Device summary

Order code

Package

Packing

STMPE1208SQTR

QFN40

Tape and reel

www.st.com

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STMPE1208S Datasheet(PDF) 1 Page - STMicroelectronics

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