參數(shù)資料
型號(hào): AT42QT2161-MMU
廠商: Atmel
文件頁(yè)數(shù): 10/14頁(yè)
文件大小: 0K
描述: IC TOUCH SENSOR 16KEY 28QFN
標(biāo)準(zhǔn)包裝: 1
系列: QMatrix™, QSlide™
類型: 電容性
觸摸面板接口: 8,2 線
輸入數(shù)/鍵: 16 鍵,滑塊
分辨率(位): 10 b
評(píng)估套件: *
數(shù)據(jù)接口: I²C,串行
電壓基準(zhǔn): 內(nèi)部
電源電壓: 1.8 V ~ 5.5 V
電流 - 電源: 1.14mA
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 28-VFQFN 裸露焊盤
供應(yīng)商設(shè)備封裝: 28-VQFN
包裝: 標(biāo)準(zhǔn)包裝
其它名稱: AT42QT2161-MMUDKR
5
9614A–AT42–08/10
AT42QT2161
Figure 1-2.
Inputs/Outputs
2.
Overview
2.1
Introduction
The AT42QT2161-MMU (QT2161) is a digital burst mode charge-transfer (QT
)
sensor designed specifically for matrix layout touch controls. It can use up to 16
keys and a slider (constructed from 2 – 8 keys). There are three dedicated General
Purpose Input/Outputs (GPIOs) which can be used as inputs for mechanical
switches etc. or as driven outputs. There are eight shared General Purpose
Outputs (GPOs) (X0 – X7) which are driven outputs only. There is PWM control for
all GPIO/GPOs.
QMatrix
employs transverse QT sensing, a technology that senses changes in
electrical charge forced across two electrode elements by a pulse edge (see
Figure 2-1). The QT2161 allows a wide range of key sizes and shapes to be mixed.
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