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STMPE321 Datasheet(PDF) 26 Page - STMicroelectronics

Part # STMPE321
Description  3-channel capacitive touchkey controller
PDF  40 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STMPE321 Datasheet(HTML) 26 Page - STMicroelectronics

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Capacitive touch module registers
STMPE321
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Doc ID 15791 Rev 3
CAL_INTERVAL
Calibration interval
Address:
0x22
Type:
R/W
Reset:
0x30
Description:
Calibration interval
INTEGRATION TIME
Integration time
Address:
0x23
Type:
R/W
Reset:
0x0F
Description:
Integration time
76
543
2
1
0
CAL_INTERVAL
[7:0] CALIBRATION INTERVAL:
Interval between calibration = calibration interval [7:0] * sensor clock period * 50
Range: 4 ms - 16 s
76
543
2
1
0
INTEGRATION_TIME[7:0]
[7:0] Integration time in AFS mode
Total period of integration = sensor clock period * integration time [7:0]
78 µs - 320 ms



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