CAP1214 datasheet(77/107 Pages) MICROCHIP

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Multiple Channel Capacitive Touch Sensor and LED Driver

Datasheet

SMSC CAP1214

Revision 1.0 (08-30-10)

DATASHEET

The LED Status Registers indicate when an LED has completed its configured behavior (see Section

6.51, "LED Behavior Registers") after being actuated by the host (see Section 6.46, "LED Output

Control Registers"). These bits are ignored when the LED is linked to a capacitive sensor input. The

bits are cleared when the INT bit has been cleared. Likewise, these bits are cleared when the DSLEEP

bit is set.

6.39.1

LED Status 1

Bit 7 - LED8_DN - Indicates that LED8 has finished its behavior after being actuated by the host.

Bit 6 - LED7_DN - Indicates that LED7 has finished its behavior after being actuated by the host.

Bit 5 - LED6_DN - Indicates that LED6 has finished its behavior after being actuated by the host.

Bit 4 - LED5_DN - Indicates that LED5 has finished its behavior after being actuated by the host.

Bit 3 - LED4_DN - Indicates that LED4 has finished its behavior after being actuated by the host.

Bit 2 - LED3_DN - Indicates that LED3 has finished its behavior after being actuated by the host.

Bit 1 - LED2_DN - Indicates that LED2 has finished its behavior after being actuated by the host.

Bit 0 - LED1_DN - Indicates that LED1 has finished its behavior after being actuated by the host.

6.39.2

LED Status 2

Bit 2 - LED11_DN - Indicates that LED11 has finished its behavior after being actuated by the host.

Bit 1 - LED10_DN - Indicates that LED10 has finished its behavior after being actuated by the host.

Bit 0 - LED9_DN - Indicates that LED9 has finished its behavior after being actuated by the host.

6.40

Feedback Configuration Register

The Feedback Configuration Register controls the output of the FEEDBACK pin (see Section 5.7,

"FEEDBACK Pin").

APPLICATION NOTE: When linked to one or more sensors, the FEEDBACK pin will be activated when a touch is

detected. If the duration, frequency, or linking is changed while the FEEDBACK pin is active,

these changes will be applied the next time that the FEEDBACK pin is activated.

APPLICATION NOTE: If linked to one or more sensors and a second touch is detected while the FEEDBACK pin

is active, it will be restarted immediately without completing the current activity duration. Any

previously programmed setting changes are applied.

Bits 7-5 - FDBK_DUR[2:0] - Controls the duration of the FEEDBACK pin output (see Table 6.60).

Table 6.59 Feedback Configuration Register

ADDR

R/W

DEFAULT

62h

R/W

Feedback

Configuration

FDBK_DUR[2:0]

FDBK_FREQ[4:0]

00h

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