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AT42QTAN0040

Part Number	AT42QTAN0040
Manufacturer	ATMEL Corporation
Description	Driving the AT42QT2160 QMatrix Sensor IC
Published	Jul 3, 2014
Detailed Description	Driving the AT42QT2160 QMatrix Sensor IC 1. Introduction This application note shows how the AT42QT2160-MMU (QT2160) 16-...
Datasheet	AT42QTAN0040 PDF File

Overview

Driving the AT42QT2160 QMatrix Sensor IC 1.
Introduction This application note shows how the AT42QT2160-MMU (QT2160) 16-key QMatrix™ Sensor IC can be connected to a microprocessor to provide touch input functionality.
Example code is provided to demonstrate how easily the QT2160 can be incorporated into a design.
The code can be run “as is” or used as a starting point for QT2160based projects.
The example compiles to under 1 Kbyte of code including all necessary I2C-compatible driver functions.
The example code is written in the C programming language and can easily be adapted for many processor types.
See Section 6 on page 8 for a listing of the complete program.
Figure 1-1.
Circuit Configuration for the Example Project Vdd GPIO3 GPO3 Driving the AT42QT2160 QMatrix Sensor IC Application Note AT42QTAN0040 Vdd GPO2 GPO1 GPO0 P0.
3 P0.
7 P0.
6 CHANGE SCL SDA 8 Discrete Keys (keys 8 – 15) Host MCU QT2160 5-Key Slider (keys 0 – 4) QMatrix Key Array 2.
Overview of the QT2160 2.
1 Intr...

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AT42QTAN0040 Driving the AT42QT2160 QMatrix Sensor IC - ATMEL Corporation

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