CAP1114 datasheet(71/102 Pages) MICROCHIP

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Multiple Channel Capacitive Touch Sensor and LED Driver

Datasheet

SMSC CAP1114

Revision 1.1 (02-04-11)

DATASHEET

4. Each sensor can be individually enabled / disabled via the Grouped Sensor Enable register

settings.

5. All sensors except CS8 and CS14 will use the button queue controls and repeat rates.

6. The CS8 and CS14 sensors will use the tap and press and hold logic as well as the group

repeat rate settings.

7. All sensors will use the group max duration settings if this feature is enabled via the

MAX_DUR_EN_G bit.

8. For CS8 and CS14, interrupts will be generated in the same way as they would be for a TAP

or Press and Hold event. This means that an interrupt will be generated on a touch. If the button

is held, interrupts will be generated at the Group Repeat rate until the button is released. These

buttons do not use the INT_REL_n control and will only generate an interrupt when a touch is

detected.

9. The CS8 sensor will be the designated “DOWN” button. When a tap or Press and Hold event

is detected, it will cause the DOWN status bit to be set. The TAP and PH status bits will be set

normally.

10. The CS14 sensor will be the designated “UP” button. When a Tap or Press and Hold event is

detected, it will cause the UP status bit to be set. The TAP and PH status bits will be set

normally.

Bit 0 - INT_REL_n - Controls the interrupt behavior when a release is detected on a button.

‘0’ (default) - An interrupt is generated when a press is detected and again when a release is

detected and at the repeat rate (if enabled - see Section 6.14 and Section 6.33).

‘1’ - An interrupt is generated when a press is detected and at the repeat rate (if enabled - see

Section 6.14 and Section 6.33).

6.34

Grouped Sensor Channel Enable Register

The Grouped Sensor Channel Enable Register enables sensors within Grouped Sensors to be

sampled during the polling cycle. This register may be updated at any time. If the grouped sensors are

treated as a group (see Section 6.33), then disabling one or more sensors will cause the slider to

behave erratically or not at all.

Bit 6 - CS14_EN - Enables the CS14 sensor to be sampled in the polling cycle.

Bit 5 - CS13_EN - Enables the CS13 sensor to be sampled in the polling cycle.

Bit 4 - CS12_EN - Enables the CS12 sensor to be sampled in the polling cycle.

Bit 3 - CS11_EN - Enables the CS11 sensor to be sampled in the polling cycle.

Bit 2 - CS10_EN - Enables the CS10 sensor to be sampled in the polling cycle.

Bit 1 - CS9_EN - Enables the CS9 sensor to be sampled in the polling cycle.

Bit 0 - CS8_EN - Enables the CS8 sensor to be sampled in the polling cycle.

Table 6.51 Grouped Sensor Channel Enable Register

ADDR

R/W

DEFAULT

41h

R/W

Grouped Sensor

Channel Enable

CS14_

CS13_

CS12_

CS11_

CS10_

CS9_

CS8_

7Fh

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