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STMPE812A bảng dữ liệu(PDF) 35 Page - STMicroelectronics

tên linh kiện STMPE812A
Giải thích chi tiết về linh kiện  Integrated 4-wire resistive touchscreen controller, pen-down/real-time mode, fullyautonomous
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nhà sản xuất  STMICROELECTRONICS [STMicroelectronics]
Trang chủ  http://www.st.com
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STMPE812A bảng dữ liệu(HTML) 35 Page - STMicroelectronics

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STMPE812A
Touchscreen controller
Doc ID 18225 Rev 4
35/53
TSC detect config
TSC detection configuration 1 register
Address:
0x41
Type:
R/W
Reset:
0xA4
Description:
Touchscreen controller detection configuration 1 register.
7654
3
2
1
0
PenStrength[1:0]
TDetDly[2:0]
Settling[2:0]
1010
0
1
0
0
[7:6] PenStrength[1:0]
Pen detect strength threshold
‘00’ – least sensitive (50 K pull-up)
‘01’ – sensitive (40 K pull-up)
‘10’ – more sensitive (30 K pull-up) - Default
‘11’ – most sensitive (20 K pull-up)
[5:3] TDetDly[2:0]
Touch detect delay
‘000’ = 40 µs
‘001’ = 80 µs
‘010’ = 160 µs
‘011’ = 320 µs
‘100’ = 640 µs - Default
‘101’ = 1.28 ms
‘110’ = 2.56 ms
‘111’ = 5.12 ms
[2:0] Settling[2:0]
Panel driver settling time
‘000’ = 40 µs
‘001’ = 80 µs
‘010’ = 160 µs
‘011’ = 320 µs/ns
‘100’ = 640 µs - Default
‘101’ = 1.28 ms
‘110’ = 2.56 ms
‘111’ = 5.12 ms
For large panels (> 6 inches), a capacitor of 10 nF is recommended at the touchscreen
terminals for noise filtering. In this case, settling time of 1 ms or more is recommended.



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