th July 2011 48 www.semtech.com SX8657/SX8658 Haptics " />
參數(shù)資料
型號: SX8657IWLTRT
廠商: Semtech
文件頁數(shù): 43/61頁
文件大小: 0K
描述: IC TOUCH SCREEN 12BIT 20QFN
標準包裝: 1
類型: 電阻式,觸感驅動器
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: 內部
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
供應商設備封裝: 20-QFN(4x4)
包裝: 標準包裝
其它名稱: SX8657IWLDKR
ADVANCED COMMUNICATIONS & SENSING
Rev 1 – 25
th July 2011
48
www.semtech.com
SX8657/SX8658
Haptics Enabled 4/5-Wire
Resistive Touchscreen Controller with Proximity Sensing
1:0
FILT
00
Defines the channel filtering algorithm:
00 : OFF (Nfilt = 1)
01 : 3 sample averaging (Nfilt = 3)
10 : 5 sample averaging (Nfilt = 5)
11 : 3 sample averaging after removal of extreme values (Nfilt = 7)
Table 13 : RegTouch1 (Addr 0x01)
Bits
Variable
Default
Description
7:4
Reserved
0000
3:0
SETDLY
0000
Defines the bias settling time for each channel’s subsequent conversion
(i.e. when filtering is enabled):
0000 : 0.5 us
0001 : 1.1 us
0010 : 2.2 us
0011 : 4.4 us
0100 : 8.9 us
0101 : 17.8 us
0110 : 35.5 us
0111 : 71.0 us
1000 : 142 us
1001 : 284 us
1010 : 568 us
1011 : 1.14 ms
1100 : 2.27 ms
1101 : 4.55 ms
1110 : 9.09 ms
1111 : 18.19 ms
Values above assume typical FOSCH, else vary accordingly.
Table 14 : RegTouch2 (Addr 0x02)
Bits
Variable
Default
Description
7:0
Reserved
0x00
Table 15 : RegTouch3 (Addr 0x03)
Bits
Variable
Default
Description
7
XCONV
1
Enables X channel conversion:
0 : OFF
1 : ON
6
YCONV
1
Enables Y channel conversion:
0 : OFF
1 : ON
5
Z1CONV
0
Enables Z1 channel conversion:
0 : OFF
1 : ON
4
Z2CONV
0
Enables Z2 channel conversion:
0 : OFF
1 : ON
3:0
Reserved
0000
Table 16 : RegChanMsk (Addr 0x04)
Bits
Variable
Default
Description
7
HAPTMODE
0
Defines the haptics mode/input:
0 : PWM
1 : I2C
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