CAP1114 datasheet(77/102 Pages) MICROCHIP

77 / 102 page

Multiple Channel Capacitive Touch Sensor and LED Driver

Datasheet

SMSC CAP1114

Revision 1.1 (02-04-11)

DATASHEET

6.41

LED / GPIO Output Type Register

The LED / GPIO Output Type Register controls the type of output for the LEDx / GPIOx pins that are

configured to operate as outputs. Each pin is controlled by a single bit.

Bit 7 - LED8_OT - Determines the output type of LED8.

‘0’ (default) - The LED8 / GPIO8 pin is an open-drain output with an external pull-up resistor. When

the appropriate bit is set to the “active” state (logic ‘1’), the pin will be driven low. Conversely, when

the bit is set to the “inactive” state (logic ‘0’), the pin will be left in a high-Z state and pulled high

via an external pull-up resistor.

‘1’ - The LEDx / GPIO8 pin is a push-pull output. When driving a logic ‘1’, the pin is driven high.

When driving a logic ‘0’, the pin is driven low.

Bit 6 - LED7_OT - Determines the output type of LED7.

Bit 5 - LED6_OT - Determines the output type of LED6.

Bit 4 - LED5_OT - Determines the output type of LED5.

Bit 3 - LED4_OT - Determines the output type of LED4.

Bit 2 - LED3_OT - Determines the output type of LED3.

Bit 1 - LED2_OT - Determines the output type of LED2.

Bit 0 - LED1_OT - Determines the output type of LED1.

6.42

GPIO Input Register

The GPIO Input Register reflects the state of the LEDx / GPIOx pins. These bits are updated whenever

the pin state changes regardless of the operation of the pin. If a LEDx / GPIOx pin is configured as

an input (see Section 6.40), when a pin changes states, the GPIOx_STS bit is set. If the corresponding

interrupt enable bit is also set, an interrupt will be asserted.

Table 6.60 LED / GPIO Output Type Register

ADDR

R/W

B6B5B4B3

DEFAULT

71h

R/W

LED / GPIO

Output Type

LED8_

LED7_

LED6_

LED5_

LED4_

LED3_

LED2_

LED1_

00h

Table 6.61 GPIO Input Register

ADDR

R/W

DEFAULT

72h

GPIO Input

GPIO8

GPIO7

GPIO6

GPIO5

GPIO4

GPIO3

GPIO2

GPIO1

00h

CAP1114 датащи(PDF) 77 Page - Microchip Technology

CAP1114 датащи(HTML) 77 Page - Microchip Technology

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

датащи скачать

ссылки URL