th July 2011 49 www.semtech.com SX8657/SX8658 Haptics " />
參數(shù)資料
型號： SX8658IWLTRT
廠商： Semtech
文件頁數(shù)： 44/61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： SX8658IWLDKR
ADVANCED COMMUNICATIONS & SENSING
Rev 1 – 25
th July 2011
49
www.semtech.com
SX8657/SX8658
Haptics Enabled 4/5-Wire
Resistive Touchscreen Controller with Proximity Sensing
6:5
HAPTTYPEEN
00
Defines the haptics load:
00 : OFF. Haptics block disabled.
01 : LRA
10 : ERM
11 : Reserved
4
HAPTRANGE
0
Defines MIN prescaler value:
0 : 128
1 : 256
3:0
HAPTGAIN
0000
Defines the haptics output gain:
0000 : 1
0001 : ~1.17
0010 : ~1.34
0011 : ~1.51
0100 : ~1.67
0101 : ~1.84
0110 : ~2.01
0111 : ~2.18
1000 : ~2.35
1001 : ~2.52
1010 : ~2.69
1011 : ~2.86
1100 : ~3.03
1101 : ~3.20
1110 : ~3.37
1111 : ~3.53
Exact formula is 1 + Code * 0.169
Table 17 : RegHapt0 (Addr 0x05)
Bits
Variable
Default
Description
7:6
Reserved
00
5:3
HAPTSQUELCH
000
Defines the Haptics squelch, i.e. the range of AmplitudeCode
(HAPTAMP or MIN duty cycle equivalent, Cf. §6) which will generate a
0V output (VMOUT):
000 : OFF. No squelch.
001 : -1 < AmplitudeCode < +1 (ie. AmplitudeCode = 0)
010 : -2 < AmplitudeCode < +2
011 : -4 < AmplitudeCode < +4
100 : -8 < AmplitudeCode < +8
101 : -16 < AmplitudeCode < +16
110 : -32 < AmplitudeCode < +32
111 : -64 < AmplitudeCode < +64
2
TEMPWRNIRQEDG
0
Enables TempWrnIrq to be generated when the chip temperature gets
below the alarm threshold :
0 : OFF. TempWrnIrq generated only when the chip temperature gets
above the alarm threshold.
1 : ON. TempWrnIrq generated both when the chip temperature gets
above and below the alarm threshold.
1
TEMPALRMIRQEDG
0
Enables TempAlrmIrq to be generated when the chip temperature gets
below the alarm threshold :
0 : OFF. TempAlrmIrq generated only when the chip temperature gets
above the alarm threshold.
1 : ON. TempAlrmIrq generated both when the chip temperature gets
above and below the alarm threshold.
0
TEMPALWAYSON
0
Enables the temperature monitoring even when no operation (touch,
proximity, haptics) is enabled:
0 : OFF
1 : ON
Table 18 : RegHapt1 (Addr 0x06)
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