Datasheet> 器件分类 > 传感器> 传感器/换能器> AT42QT1085-MU

AT42QT1085-MU: 产品描述电容式触摸按钮 32-VQFN（5x5）; 产品类别传感器传感器/换能器; 文件大小377KB，共30页; 制造商Microchip(微芯科技); 官网地址https://www.microchip.com; 标准

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AT42QT1085-MU概述

电容式触摸按钮 32-VQFN（5x5）

AT42QT1085-MU规格参数

参数名称	属性值
类别
厂商名称	Microchip(微芯科技)
系列	QTouch™
包装	托盘
类型	按钮
接近探测	无
输入数	最高 8
LED 驱动器通道	最高 16
接口	SPI
电压 - 供电	2V ~ 5.5V
工作温度	-40°C ~ 85°C
安装类型	表面贴装型
封装/外壳	32-VFQFN 裸露焊盘
供应商器件封装	32-VQFN（5x5）
基本产品编号	AT42QT1085

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Atmel AT42QT1085

Eight-key QTouch

Touch Sensor IC

DATASHEET

Features



QTouch

Sensor Channels



Up to eight keys



Integrated Haptic Engine



Haptic events may be triggered by touch detection or controlled by a host

microcontroller over SPI



Data Acquisition



QTouchADC key measurement/touch detection method



Configurable measurement timing and averaging



Spread spectrum charge transfer



Raw data from channel measurement can be read over the SPI interface



GPIO Pins



12 dedicated bi-directional GPIO pins, plus up to 4 additional pins (replacing keys)



Configurable as software PWM Drive, digital inputs or outputs



Device setup



Device configuration may be stored in NVRAM



Operation



Power-On reset and brown-out detection



Internal calibrated oscillator



Key Outline Sizes



6 mm × 6 mm or larger (panel thickness dependent); widely different sizes and shapes

possible, including solid or ring shapes



Key Spacing



7 mm or more, center to center (panel thickness dependent)



Layers required



One



Electrode Materials:



Etched copper, silver, carbon, ITO



Electrode Substrates:



PCB materials; polyamide FPCB; PET films, glass



Panel materials:



Plastic, glass, composites, painted surfaces (low particle density metallic paints

possible)



Panel Thickness:



Up to 10 mm glass, 5 mm plastic (electrode size dependent)



Key Sensitivity:



Individually configured over SPI interface



Signal Processing:



Self-calibration, auto drift compensation, noise filtering



Patented Adjacent Key Suppression

(AKS

) technology to ensure accurate key

detection



Interface:



Master/Slave SPI interface, up to 750 kHz



Object-based communications protocol



Power:



2.0 V to 5.5 V



Packages:



32-pin 5 × 5 mm QFN RoHS compliant



32-pin 7 × 7 mm TQFP RoHS compliant

9625D–AT42–05/2013

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