CAP1298 datasheet(46/68 Pages) MICROCHIP

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CAP1298

DS00001571B-page 46

 2013-2015 Microchip Technology Inc.

5.21

Standby Channel Register

The Standby Channel register controls which (if any) capacitive touch sensor inputs are enabled in Standby (see Section

4.3.1.2, "Standby State Sensing Settings").

For all bits in this register:

• ‘0’ (default) - The specified channel will not be monitored in Standby.

• ‘1’ - The specified channel will be monitored in Standby. It will use the standby threshold setting, and the standby

averaging and sensitivity settings.

Bit 7 - CS8_STBY - Controls whether the CS8 channel is enabled in Standby.

Bit 6 - CS7_STBY - Controls whether the CS7 channel is enabled in Standby.

Bit 5 - CS6_STBY - Controls whether the CS6 channel is enabled in Standby.

Bit 4 - CS5_STBY - Controls whether the CS5 channel is enabled in Standby.

Bit 3 - CS4_STBY - Controls whether the CS4 channel is enabled in Standby.

Bit 2 - CS3_STBY - Controls whether the CS3 channel is enabled in Standby.

Bit 1 - CS2_STBY - Controls whether the CS2 channel is enabled in Standby.

Bit 0 - CS1_STBY - Controls whether the CS1 channel is enabled in Standby.

5.22

Standby Configuration Register

The Standby Configuration register controls averaging and sensing cycle time for sensor inputs enabled in Standby. This

maintain normal functionality in the Active state.

TABLE 5-3:

CSX_BN_TH BIT DECODE

CS_BN_TH[1:0]

Percent Threshold Setting

25%

37.5% (default)

50%

62.5%

TABLE 5-4:

STANDBY CHANNEL REGISTER

Addr

R/W

B5B4

B3B2

B1B0

Default

40h

R/W

Standby

Channel

CS8_

STBY

CS7_

STBY

CS6_

STBY

CS5_

STBY

CS4_

STBY

CS3_

STBY

CS2_

STBY

CS1_

STBY

00h

TABLE 5-5:

STANDBY CONFIGURATION REGISTER

Addr

R/W

Default

41h

R/W

Standby

Configuration

AVG_

SUM

STBY_AVG[2:0]

STBY_SAMP_

TIME[1:0]

STBY_CY_TIME

[1:0]

39h

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