th July 2011 34 www.semtech.com SX8657/SX8658 Haptics " />
參數(shù)資料
型號(hào): SX8657IWLTRT
廠商: Semtech
文件頁數(shù): 28/61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(dòng)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(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: 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
34
www.semtech.com
SX8657/SX8658
Haptics Enabled 4/5-Wire
Resistive Touchscreen Controller with Proximity Sensing
Figure 44 – Pen Trigger Mode (RegIrqMsk[6:2] = 00010 ; PROXSCANPERIOD = 001 ie 1/TOUCHRATE)
5.4.3
Minimum Scan Period (i.e. PROXSCANPERIOD)
Similarly to touch operations (Cf. §4.6.5), if PROXSCANPERIOD is too short for proximity sensing operations to
be completed, the rate tick(s) affected are ignored until operations are completed and the following tick is taken
into account for the next planned operation.
Please note that compensation lasts about ~16 times longer than a normal proximity sensing operation.
Idle
Touch Conversion
Pen Detection
NIRQ
TOUCHRATE
tick
Pen Touch
Pen Release
I2C Read Channel
Proximity Sensing
PENSTAT
CONVSTAT
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