th July 2011 54 www.semtech.com SX8657/SX8658 Haptics " />
參數(shù)資料
型號(hào): SX8657IWLTRT
廠商: Semtech
文件頁數(shù): 50/61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
54
www.semtech.com
SX8657/SX8658
Haptics Enabled 4/5-Wire
Resistive Touchscreen Controller with Proximity Sensing
Bits
Variable
Default
Description
7:0
PROXOFFSETLSB
0x00
Provides the proximity compensation offset information for monitoring
purposes. Read-only (using PROXCONVDONE), do not write.
Table 40 : RegProx17 (Addr 0x1C)
Bits
Variable
Default
Description
7
Reserved
0
6:4
PROXSENSITIVITY
000
Defines the sensitivity :
000 : 0 (Min)
001 : 1
010 : 2
011 : 3
100 : 4
101 : 5
110 : 6
111 : 7 (Max)
3:1
PROXFREQ
000
Defines the operating frequency :
010 : 64 kHz
011 : 90 kHz
100 : 112 kHz
101 : 150 kHz (recommended)
Else : Reserved
0
Reserved
0
Table 41 : RegProx18 (Addr 0x1D)
Bits
Variable
Default
Description
7:4
PROXSENSORCON
0000
Defines the proximity sensor connection, Cf. §5.1 :
0000 : None
0001 : AUX1/WIPER (5-wire TS)
0010 : AUX2 (external)
1000 : X (standard 4-wire TS)
1001 : Y (inverted 4-wire TS)
Else : Reserved
3:0
PROXSHIELDCON
0000
Defines the proximity shield connection, Cf. §5.1 :
0000 : None
0011 : AUX3 (external)
1000 : X (inverted 4-wire TS)
1001 : Y (standard 4-wire TS or 5-wire TS)
Else : Reserved
Table 42 : RegProx19 (Addr 0x1E)
Bits
Variable
Default
Description
7:6
Reserved
00
5:3
PROXBOOST
000
Enables proximity boost mode (higher sensitivity) :
100 : ON
110 : OFF (recommended; compulsory when sensor is TS)
Else : Reserved
2:0
Reserved
000
Must be set to 100.
Table 43 : RegProx20 (Addr 0x1F)
Bits
Variable
Default
Description
7:0
Reserved
0x01
Must be set to 0x81.
Table 44 : RegProx21 (Addr 0x20)
Bits
Variable
Default
Description
7:0
Reserved
0x00
Table 45 : RegProx22 (Addr 0x21)
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