CAP1214 datasheet(60/107 Pages) MICROCHIP

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Multiple Channel Capacitive Touch Sensor and LED Driver

Datasheet

Revision 1.0 (08-30-10)

SMSC CAP1214

DATASHEET

6.22

Sleep Channel Control Register

The Sleep Channel Control Register determines which sensors are sampled when the device is placed

into the Sleep state.

APPLICATION NOTE: If this register is updated while the device is in the Sleep state, the conversion cycle may be

extended or for the first measurement of the new Capacitive Touch Sensors. It will correct

itself on subsequent measurement cycles.

APPLICATION NOTE: If this register is updated while the device is in the Sleep state, it is recommended to force

a recalibration routine on newly activated channels.

Bit 7 - GR_SLEEP - Enables the Grouped sensors to be sampled when the device is placed into the

Sleep state.

‘0’ (default) - Grouped Sensors are not sampled when the device is in the Sleep state.

‘1’ - The Grouped Sensors are sampled when the device is in Sleep mode. If a tap, slide, or touch

and hold is detected, the appropriate status bit is set and an interrupt generated. Individual sensors

will be enabled via the Group Sensor Enable register.

Bit 6 - S7_SLEEP - Enables the CS7 sensor to be sampled when the device is placed into sleep mode.

‘0’ (default) - The CS7 input is not sampled when the device is in the Sleep state

‘1’ - The CS7 input is sampled when the device is in Sleep mode. If a touch is detected, the status

bit is set and an interrupt generated.

Bit 5 - S6_SLEEP - Enables the CS6 sensor to be sampled when the device is placed into the Sleep

state.

Bit 4 - S5_SLEEP - Enables the CS5 sensor to be sampled when the device is placed into the Sleep

state.

Bit 3 - S4_SLEEP - Enables the CS4 sensor to be sampled when the device is placed into the Sleep

state.

Bit 2 - S3_SLEEP - Enables the CS3 sensor to be sampled when the device is placed into the Sleep

state.

Bit 1 - S2_SLEEP - Enables the CS2 sensor to be sampled when the device is placed into the Sleep

state.

Bit 0 - S1_SLEEP - Enables the CS1 sensor to be sampled when the device is placed into the Sleep

state.

Table 6.30 Sleep Channel Control Register

ADDR

R/W

DEFAULT

29h

R/W

Sleep Channel

Control

GR_

SLEEP

S7_

SLEEP

S6_

SLEEP

S5_

SLEEP

S4_

SLEEP

S3_

SLEEP

S2_

SLEEP

S1_

SLEEP

00h

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