CAP1203 datasheet(44/59 Pages) MICROCHIP

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DS00001572B-page 44

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• ‘0’ (default) - The Standby power button circuitry is disabled.

• ‘1’ - The Standby power button circuitry is enabled.

Bits 5 - 4 - STBY_PWR_TIME[1:0] - Determines the overall time, as shown in Table 5-47, that the power button must

be held in the Standby state, in order for an interrupt to be generated and the PWR bit to be set.

Bit 2 - PWR_EN - Enables the power button feature in the Active state.

• ‘0’ (default) - The power button circuitry is disabled in the Active state.

• ‘1’ -The power button circuitry is enabled in the Active state.

Bits 1 - 0 - PWR_TIME[1:0] - Determines the overall time, as shown in Table 5-47, that the power button must be held

in the Active state, in order for an interrupt to be generated and the PWR bit to be set.

5.27

Sensor Input Calibration Registers

The Sensor Input Calibration registers hold the 10-bit value that represents the last calibration value. The value rep-

resents the capacitance applied to the internal sensing circuits to balance the capacitance of the sensor input pad. Min-

imum (000h) and maximum (3FFh) values indicate analog calibration failure (see Section 4.4, "Sensor Input

Calibration").

5.28

Product ID Register

TABLE 5-47:

POWER BUTTON TIME BITS DECODE

PWR_TIME[1:0] / STBY_PWR_TIME[1:0]

Power Button Touch Hold Time

280ms

560ms

1.12 sec (default)

2.24 sec

TABLE 5-48:

SENSOR INPUT CALIBRATION REGISTERS

Addr

R/W

Default

B1h

Sensor Input 1

Calibration

CAL1_9

CAL1_8

CAL1_7

CAL1_6

CAL1_5

CAL1_4

CAL1_3

CAL1_2

00h

B2h

Sensor Input 2

Calibration

CAL2_9

CAL2_8

CAL2_7

CAL2_6

CAL2_5

CAL2_4

CAL2_3

CAL2_2

00h

B3h

Sensor Input 3

Calibration

CAL3_9

CAL3_8

CAL3_7

CAL3_6

CAL3_5

CAL3_4

CAL3_3

CAL3_2

00h

B9h

Sensor Input

Calibration LSB

CAL3_1

CAL3_0

CAL2_1

CAL2_0

CAL1_1

CAL1_0

00h

TABLE 5-49:

PRODUCT ID REGISTER

Addr

R/W

B7B6B5B4B3B2B1

Default

FDh

Product ID

CAP1203-1

01101101

6Dh

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