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STMPE821 Datasheet(PDF) 29 Page - STMicroelectronics

Part # STMPE821
Description  8-bit Xpander Logic??with touchkey controller
PDF  55 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STMPE821 Datasheet(HTML) 29 Page - STMicroelectronics

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STMPE821
Capacitive touch module registers
29/55
CTRL
Control
Address:
0x25
Type:
R/W
Reset:
0x00
Description:
Control
7654
3
2
1
0
RESERVED
F2A
HDC_U
HDC_C
HOLD
[7:4] 0x90
[3] F2A:
Write '1' to force device to remain in ACTIVE state at all times
[2] HDC_U:
Write '1' to perform unconditional host driven calibration.
Cleared to '0' when calibration is completed
Only applicable HOLD is '1'
[1] HDC_C:
Write '1' to perform conditional host driven calibration.
Calibration is performed if and only if no touch is detected.
Cleared to '0' when calibration is completed
Only applicable HOLD is '1'
[0] HOLD:
'0' to enable ETC
'1' to disable ETC



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