th July 2011 28 www.semtech.com SX8657/SX8658 Haptics " />
參數(shù)資料
型號: SX8657IWLTRT
廠商: Semtech
文件頁數(shù): 21/61頁
文件大?。?/td> 0K
描述: IC TOUCH SCREEN 12BIT 20QFN
標(biāo)準(zhǔn)包裝: 1
類型: 電阻式,觸感驅(qū)動器
觸摸面板接口: 4,5 線
輸入數(shù)/鍵: 1 TSC,雨刷,鑰匙
分辨率(位): 12 b
評估套件: *
數(shù)據(jù)接口: I²C,串行
電壓基準(zhǔn): 內(nèi)部
電源電壓: 2.3 V ~ 3.6 V
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 20-WFQFN 裸露焊盤
供應(yīng)商設(shè)備封裝: 20-QFN(4x4)
包裝: 標(biāo)準(zhǔn)包裝
其它名稱: SX8657IWLDKR
ADVANCED COMMUNICATIONS & SENSING
Rev 1 – 25
th July 2011
28
www.semtech.com
SX8657/SX8658
Haptics Enabled 4/5-Wire
Resistive Touchscreen Controller with Proximity Sensing
Figure 33 – ProxRaw Update
5.3.3
PROXUSEFUL Update
PROXUSEFUL update consists in filtering PROXRAW upfront to remove its potential high frequencies
components(system noise, interferer, etc) and extract only user activity (few Hz max) and slow environment
changes.
Figure 34 – PROXUSEFUL Update
F(PROXRAW ; PROXUSEFUL[n-1] ; PROXRAWFILT) = (1 - PROXRAWFILT).PROXRAW + PROXRAWFILT.PROXUSEFUL[n-1]
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