th July 2011 52 www.semtech.com SX8657/SX8658 Haptics " />
參數(shù)資料
型號: SX8658IWLTRT
廠商: Semtech
文件頁數(shù): 48/61頁
文件大?。?/td> 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: SX8658IWLDKR
ADVANCED COMMUNICATIONS & SENSING
Rev 1 – 25
th July 2011
52
www.semtech.com
SX8657/SX8658
Haptics Enabled 4/5-Wire
Resistive Touchscreen Controller with Proximity Sensing
Bits
Variable
Default
Description
7:5
PROXAVGPOSDEB
000
Defines the average positive debounce (for compensation) :
000 : OFF
001 : 2 samples
010 : 4 samples
011 : 8 samples
100 : 16 samples
101 : 32 samples
110 : 64 samples
111 : 128 samples
4:2
PROXAVGPOSFILT
000
Defines the average positive filter coefficient :
000 : 0 (ie filtering OFF)
001 : 1 – 1/2
010 : 1 – 1/4
011 : 1 – 1/8
100 : 1 – 1/16
101 : 1 – 1/32
110 : 1 – 1/64
111 : 1 – 1/128
1:0
PROXRAWFILT
00
Defines the raw filter coefficient.
If PROXRAWFILTSEL = 0 :
00 : 0 (ie filtering OFF)
01 : 1 – 1/2
10 : 1 – 1/4
11 : 1 – 1/8
If PROXRAWFILTSEL = 1 :
00 : 1 – 1/16
01 : 1 – 1/32
10 : 1 – 1/64
11 : 1 – 1/128
Table 28 : RegProx5 (Addr 0x10)
Bits
Variable
Default
Description
7:0
PROXAVGNEGTHRESH
0x00
Defines the average negative threshold (for compensation).
Threshold = – 8 x register value
Table 29 : RegProx6 (Addr 0x11)
Bits
Variable
Default
Description
7:5
PROXAVGNEGDEB
000
Defines the average negative debounce (for compensation) :
000 : OFF
001 : 2 samples
010 : 4 samples
011 : 8 samples
100 : 16 samples
101 : 32 samples
110 : 64 samples
111 : 128 samples
4:2
PROXAVGNEGFILT
000
Defines the average negative filter coefficient :
000 : 0 (i.e. filtering OFF)
001 : 1 – 1/2
010 : 1 – 1/4
011 : 1 – 1/8
100 : 1 – 1/16
101 : 1 – 1/32
110 : 1 – 1/64
111 : 1 – 1/128
1
PROXHIGHIM
0
Enables high noise immunity mode :
0 : OFF
1 : ON, at the expense of higher power consumption.
0
Reserved
0
Table 30 : RegProx7 (Addr 0x12)
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