AT42QT2120
| Key | Value |
|---|
| Pin Count: | 20 |
|---|
| # of Touch Channels: | 12 |
|---|
| Operating Voltage (Vcc): | 1.8 to 5.5 |
|---|
| Interface Type: | I2C |
|---|
The Atmel® AT42QT2120 is a capacitive touch controller with 12 configurable Atmel QTouchADC buttons, sliders and wheels. The QTouchADC sensing algorithm (self capacitance) enables the user to achieve longer-range proximity sensing. This capability makes the device ideal for any type of proximity-sensing application, including wake-up, thermostat, TV controls, wireless mouse, etc. This reduces the total power consumption of your device and results in a more intuitive and differentiated user interface.
The button sensors can be constructed in a variety of shapes and sizes. The device includes all the necessary signal processing functions required to provide stable sensing under a wide variety of changing conditions and frequencies (conducted immunity certified to EN61000-4-6 Level 2B).
The QTouchADC sensing algorithm enables superior sensing because of faster acquisition times and shorter burst lengths. This algorithm is utilized in the new Atmel AT42QT2120 touch controller, as well in the Atmel QTouch Library in the Atmel ATtiny20 and ATtiny40 devices. In addition to providing the industry's best proximity range, QTouchADC removes the need for any external components per sensing channel and reduces the pins to 1-pin-per-channel.
Ordering Code 订购信息| 订购码 | 封装 | 操作范围 | 载体类型 |
|---|
| AT42QT2120-MMHR | VQFN 20M2 20 | Industrial (A) (-40°C to 85°C) | |
DataSheet 数据手册
Application Note
- Atmel AT02259: QTouch原理图和布局清单(文件大小: 2.5MB, 27 页数, 修订版 C, 更新时间: 07/2014)
- Atmel AT02260: Driving AT42QT1085(文件大小: 364KB, 14 页数, 修订版 A, 更新时间: 03/2013)
Atmel AT02260: Driving AT42QT1085 - Atmel AT03075: Getting Started with SAM4L Using QTouch Composer(文件大小: 1.5MB, 23 页数, 修订版 A, 更新时间: 05/2013)
- Atmel AT11805: Capacitive Touch Long Slider Design with PTC(文件大小: 561KB, 14 页数, 修订版 B, 更新时间: 06/2015)
- Atmel AT12405: Low Power Sensor Design with PTC(文件大小: 1.1MB, 17 页数, 修订版 A, 更新时间: 04/2015)
- Atmel AT12699: Multifunction Compact Keyboard(文件大小: 1.1MB, 31 页数, 修订版 B, 更新时间: 11/2015)(Software size: 4.1MB, revision B, updated: 02/2016)
Application Note - Atmel AT12699: Multifunction Compact Keyboard - Atmel AT13323: QTouch Smart Scan with Lumped Mode(文件大小: 3.6MB, 21 页数, 修订版 A, 更新时间: 09/2015)
Atmel AT13323: QTouch Smart Scan with Lumped Mode - Atmel AT13764: QTouch Scroll Sensor for Wearables(文件大小: 1MB, 16 页数, 修订版 A, 更新时间: 01/2016)
Atmel AT13764: QTouch Scroll Sensor for Wearables - Atmel AT15291: Migrating QTouch Designs from SAM D MCUs to SAM C MCUs(文件大小: 1MB, 20 页数, 修订版 A, 更新时间: 01/2016)
- Atmel AVR3003: Driving AT42QT1110 and AT42QT1111(文件大小: 279KB, 12 页数, 修订版 A, 更新时间: 10/2012)
Atmel AVR3003: Driving AT42QT1110 and AT42QT1111 - Atmel AVR3009: Driving QTouch Device with I2C Interface(文件大小: 287KB, 11 页数, 修订版 A, 更新时间: 12/2012)
Atmel AVR3009: Driving QTouch Device with I2C Interface - QTAN0015: Power Supply Considerations(文件大小: 66534, 4 页数, 修订版 A, 更新时间: 10/2008)
- QTAN0017: Checking the Effects of Noise(文件大小: 278826, 4 页数, 修订版 A, 更新时间: 10/2008)
- QTAN0030: Implementing a Long Slide Control(文件大小: 737295, 8 页数, 修订版 A, 更新时间: 06/2008)
- QTAN0040: Driving the AT42QT2160 QMatrix™ Sensor IC(文件大小: 148184, 14 页数, 修订版 A, 更新时间: 07/2008)
- QTAN0062: QTouch and QMatrix Sensitivity Tuning for Keys, Sliders and Wheels(文件大小: 426486, 18 页数, 修订版 A, 更新时间: 08/2010)
- QTAN0079 按键、滑动条和翻转 传感器设计指南(文件大小: 1058709, 72 页数, 修订版 A, 更新时间: 11/2011)
- QTAN0085: Haptics Design Guide(文件大小: 174KB, 10 页数, 修订版 B, 更新时间: 02/2013)
- QTAN0087: Proximity Design Guide(文件大小: 809354, 18 页数, 修订版 B, 更新时间: 04/2012)
Brochures and Flyers
User Guide
