STMPE1208S datasheet(27/51 Pages) STMICROELECTRONICS

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STMPE1208S

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CTRL_1

Control register 1

Address:

0x24

Type:

R/W

Reset:

0x00

Description:

Control register.

7654

F2A

PDIV[1:0]

NDIV

HDC_U

HDC_C

HOLD_C

[7] RESERVED

[6] F2A:

Write '1' to force the device to stay in active mode at all times. For best performance and

stability, this bit must be set to ‘1’ at all times.

[5:4] PDIV[1:0]:

'00' : System clock = 1.6MHz

'01' : System clock = 800KHz

'10' : System clock = 400KHz

'11' : System clock = 200KHz

[3] NDIV:

Sensor clock frequency setting:

'0' :sensor clock = system clock / 80

'1' :sensor clock = system clock / 160

Initial calibration time = sensor clock * 150

[2] HDC_U:

Unconditional host driven calibration. Executes an unconditional calibration. This is valid only if

"Hold C" bit is set, and device in Active mode. Reads '0' when calibration is completed.

[1] HDC_C:

Conditional host driven calibration. Executes a calibration if no touch is being sensed.

[0] HOLD_C:

'0' for auto-calibration mode

'1' disables auto-calibration

STMPE1208S 数据表(PDF) 27 Page - STMicroelectronics

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