STMPE321 Datasheet, PDF (27/40 Pages) STMicroelectronics – Up to 3 capacitive touchkey inputs

STMPE321
Capacitive touch module registers
CTRL
7
6
5
RESERVED
4
3
F2A
2
HDC_U
1
HDC_C
Address:
0x25
Type:
R/W
Reset:
0x00
Description:
Control
[7:4] RESERVED
[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'
Control
0
HOLD
[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
Doc ID 15791 Rev 3
27/40