CAP1293 datasheet(47/63 Pages) MICROCHIP

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 2013-2015 Microchip Technology Inc.

DS00001566B-page 47

CAP1293

5.27

Power Button Configuration Register

The Power Button Configuration Register controls the length of time that the designated power button must indicate a

touch before an interrupt is generated and the power status indicator is set (see Section 4.6, "Power Button").

Bit 6 - STBY_PWR_EN - Enables the power button feature in the Standby state.

• ‘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 5-50, 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 5-50, 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.

TABLE 5-48:

PWR_BTN BIT DECODE

PWR_BTN[2:0]

Sensor Input Designated as Power Button

CS1

CS2

CS3

TABLE 5-49:

POWER BUTTON CONFIGURATION REGISTER

Addr

R/W

B5B4B3

Default

61h

R/W

Power Button

Configuration

STBY_

PWR_

STBY_PWR_

TIME [1:0]

PWR_

PWR_TIME [1:0]

22h

TABLE 5-50:

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

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