CAP1208 Datasheet, PDF(37/67 Page) Microchip Technology

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CAP1208 Datasheet, PDF (37/67 Pages) Microchip Technology – 8-Channel Capacitive Touch Sensor

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8-Channel Capacitive Touch Sensor

Datasheet

5.7

Sensor Input Enable Register

ADDR R/W

21h

R/W

Sensor Input

Enable

Table 5.10 Sensor Input Enable Register

DEFAULT

CS8_EN CS7_EN CS6_EN CS5_EN CS4_EN CS3_EN CS2_EN CS1_EN

FFh

The Sensor Input Enable register determines whether a capacitive touch sensor input is included in

the sensing cycle in the Active state.

For all bits in this register:

ï® â0â - The specified input is not included in the sensing cycle in the Active state.

ï® â1â (default) - The specified input is included in the sensing cycle in the Active state.

Bit 7 - CS8_EN - Determines whether the CS8 input is monitored in the Active state.

Bit 6 - CS7_EN - Determines whether the CS7 input is monitored in the Active state.

Bit 5 - CS6_EN - Determines whether the CS6 input is monitored in the Active state.

Bit 4 - CS5_EN - Determines whether the CS5 input is monitored in the Active state.

Bit 3 - CS4_EN - Determines whether the CS4 input is monitored in the Active state.

Bit 2 - CS3_EN - Determines whether the CS3 input is monitored in the Active state.

Bit 1 - CS2_EN - Determines whether the CS2 input is monitored in the Active state.

Bit 0 - CS1_EN - Determines whether the CS1 input is monitored in the Active state.

5.8

Sensor Input Configuration Register

ADDR R/W

22h

R/W

Table 5.11 Sensor Input Configuration Register

Sensor Input

Configuration

MAX_DUR[3:0]

B0 DEFAULT

RPT_RATE[3:0]

A4h

The Sensor Input Configuration Register controls timings associated with the capacitive sensor inputs.

Bits 7 - 4 - MAX_DUR[3:0] - (default 1010b) - Determines the maximum time that a sensor pad is

allowed to be touched until the capacitive touch sensor input is recalibrated (see Section 4.4.3,

"Delayed Recalibration"), as shown in Table 5.12.

Table 5.12 MAX_DUR Bit Decode

MAX_DUR[3:0]

TIME BEFORE RECALIBRATION

560ms

840ms

ï£ 2014 Microchip Technology Inc.

DS00001570B-page 37

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