CAP1114 datasheet(52/102 Pages) MICROCHIP

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Multiple Channel Capacitive Touch Sensor and LED Driver

Datasheet

Revision 1.1 (02-04-11)

SMSC CAP1114

DATASHEET

Bit 2 - RPT_EN_B - Determines whether repeat rate is enabled for all buttons.

‘0’ (default) - Repeat rate is not enabled. An interrupt will be generated when a touch is detected.

‘1’ - Repeat rate is enabled for all buttons.

Bit 1 - MAX_DUR_EN_G - Determines whether the maximum duration recalibration is enabled for

grouped sensors.

‘0’ (default) - The maximum duration recalibration functionality is disabled. A press may be held

indefinitely and no re-calibration will be performed on any button.

‘1’ - The maximum duration recalibration functionality is enabled. If a press is held for longer than

the MAX_DUR_G bit settings, the re-calibration routine will be restarted (see Section 6.18).

Bit 0 - RPT_EN_G - Determines the interrupt mechanism used when a Press and Hold event is

detected on a grouped sensor.

‘0’ - An interrupt will be generated when a Press and Hold event is detected.

‘1’ (default) - An interrupt will be generated when a Press and Hold event is detected and at the

programmed repeat rate so long as the sensor is pressed.

6.15

Sensor Enable Register

The Sensor Enable Register determines whether a Capacitive Touch Sensor input is included in the

sampling cycle in the fully active state. The length of the sampling cycle is not affected by the number

of sensors measured.

Bit 7 - GP_EN - Enables the Grouped Sensors to be included during the sampling cycle.

‘0’ - All sensors in the grouped sensors will not be sampled regardless of the state of the

VOL_UP_DOWN bit.

‘1’ (default) - Grouped sensors will be sampled. Individual channels are enabled via the Group

Sampling Enable register.

Bit 6 - S7_EN - Enables the CS7 input to be included during the sampling cycle.

‘0’ - The CS7 input is not included in the sampling cycle.

‘1’ (default) - The CS7 input is included in the sampling cycle.

Bit 5 - S6_EN - Enables the CS6 input to be included during the sampling cycle.

Bit 4 - S5_EN - Enables the CS5 input to be included during the sampling cycle.

Bit 3 - S4_EN - Enables the CS4 input to be included during the sampling cycle.

Bit 2 - S3_EN - Enables the CS3 input to be included during the sampling cycle.

Bit 1 - S2_EN - Enables the CS2 input to be included during the sampling cycle.

Bit 0 - S1_EN - Enables the CS1 input to be included during the sampling cycle.

Table 6.20 Sensor Enable Register

ADDR

R/W

B5B4B3B2B1B0

DEFAULT

21h

R/W

Sensor Enable

GP_EN

S7_EN

S6_EN

S5_EN

S4_EN

S3_EN

S2_EN

S1_EN

FFh

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