th July 2011 3 www.semtech.com SX8657/SX8658 Haptics E" />
參數(shù)資料
型號(hào): SX8657IWLTRT
廠商: Semtech
文件頁數(shù): 23/61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
3
www.semtech.com
SX8657/SX8658
Haptics Enabled 4/5-Wire
Resistive Touchscreen Controller with Proximity Sensing
5.3.6
PROXSTAT Update
31
5.4
Host Operation
32
5.4.1
General Description
32
5.4.2
Proximity Sensing vs Touch Operations
32
5.4.3
Minimum Scan Period (i.e. PROXSCANPERIOD)
34
6
HAPTICS INTERFACE (SX8657/58) .......................................................................................... 35
6.1
Introduction
35
6.2
ERM Load
35
6.2.1
Introduction
35
6.2.2
PWM Mode
36
6.2.3
I2C Mode
36
6.3
LRA Load
36
6.3.1
Introduction
36
6.3.2
PWM Mode
37
6.3.3
I2C Mode
37
6.4
Short-Circuit Protection
37
7
TEMPERATURE SENSOR.......................................................................................................... 38
8
INTERRUPT (NIRQ) .................................................................................................................. 39
8.1
Introduction
39
8.2
Registers Overview
39
8.2.1
RegIrqMsk
39
8.2.2
RegIrqSrc
39
8.2.3
RegStat
39
8.3
Host Procedure
39
9
AUXILIARY PINS (AUX1/AUX2/AUX3)...................................................................................... 40
10
RESET...................................................................................................................................... 41
10.1
Hardware (POR and NRST)
41
10.2
Software (RegReset)
41
10.3
ESD Event (RESETSTAT)
41
11
I2C INTERFACE........................................................................................................................ 42
11.1
Introduction
42
11.2
I2C Address
42
11.3
Write Register
42
11.4
Read Register
43
11.5
Write Command (Touchscreen Interface)
43
11.6
Read Channel (Touchscreen Interface)
44
12
REGISTERS DETAILED DESCRIPTION ...................................................................................... 46
13
APPLICATION INFORMATION ................................................................................................... 58
13.1
Typical Application Circuit
58
13.2
External Components Recommended Values
58
14
PACKAGING INFORMATION ..................................................................................................... 59
14.1
QFN Package
59
14.2
CSP Package
60
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