CAP1214 datasheet(88/107 Pages) MICROCHIP

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Multiple Channel Capacitive Touch Sensor and LED Driver

Datasheet

Revision 1.0 (08-30-10)

SMSC CAP1214

DATASHEET

Bits 5 - 4 - LED3_CTL[1:0] - Determines the behavior of LED3 / GPIO3 when configured to operate

as an LED output.

Bits 3 - 2 - LED2_CTL[1:0] - Determines the behavior of LED2 / GPIO2 when configured to operate

as an LED output.

Bits 1 - 0 - LED1_CTL[1:0] - Determines the behavior of LED1 / GPIO1 when configured to operate

as an LED output.

6.51.2

LED Behavior 2 - 82h

Bits 7 - 6 - LED8_CTL[1:0] - Determines the behavior of LED8 / GPIO8 when configured to operate

as an LED output.

Bits 5 - 4 - LED7_CTL[1:0] - Determines the behavior of LED7 / GPIO7 when configured to operate

as an LED output.

Bits 3 - 2 - LED6_CTL[1:0] - Determines the behavior of LED6 / GPIO6 when configured to operate

as an LED output.

Bits 1 - 0 - LED5_CTL[1:0] - Determines the behavior of LED5 / GPIO5 when configured to operate

as an LED output.

6.51.3

LED Behavior 3 - 83h

Bits 7 - 6 - LED11_ALT[1:0] - Determines the behavior of LED11 when the PWR_LED bit is set and

either the SLEEP or DSLEEP bits are set (see Section 6.1).

Bits 5 - 4 - LED11_CTL[1:0] - Determines the behavior of LED11 when the PWR_LED bit is set and

both the SLEEP and DSLEEP bits are not set (see Section 6.1). It also determines the behavior when

the LED is driven by setting bit 2 LED11_DR in the LED Output Control 2 Register (74h).

Bits 3 - 2 - LED10_CTL[1:0] - Determines the behavior of LED10.

Bits 1 - 0 - LED9_CTL[1:0] - Determines the behavior of LED9.

APPLICATION NOTE: When driving the LED / GPIOx output as a GPO, the LEDx_CTL[1:0] bits should be set to

00b.

Table 6.73 LEDx_CTL Bit Decode

LEDX_CTL

[1:0]

OPERATION

DESCRIPTION

START

TRIGGER

STOP

TRIGGER

Direct

The LED is driven to the programmed state

(active or inactive). See Figure 6.7

Touch Detected

or LED Output

Control bit set

Release

Detected or

LED Output

Control bit

cleared

Pulse 1

The LED will “Pulse” a programmed

number of times. During each “Pulse” the

LED will breathe up to the maximum

brightness and back down to the minimum

brightness so that the total “Pulse” period

matches the programmed value.

Touch or

Release

Detected or LED

Output Control

bit set or cleared

(see

Section 6.52)

n/a

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