 2015 Microchip Technology Inc.

DS00001624B-page 21

CAP1106

Bit 5 - STBY - Enables Standby.

• ‘0’ (default) - Sensor input scanning is active.

• ‘1’ - Capacitive touch sensor input scanning is limited to the sensor inputs set in the Standby Channel register (see

Section 6.20). The status registers will not be cleared until read. Sensor inputs that are no longer sampled will flag

a release and then remain in a non-touched state.

• Bit 4 - DSLEEP - Enables Deep Sleep by deactivating all functions. ‘0’ (default) - Sensor input scanning is active.

• ‘1’ - All sensor input scanning is disabled.. The status registers are automatically cleared and the INT bit is

cleared.

Bit 0 - INT - Indicates that there is an interrupt. When this bit is set, it asserts the ALERT# pin. If a channel detects a

touch and its associated interrupt enable bit is not set to a logic ‘1’, no action is taken.

This bit is cleared by writing a logic ‘0’ to it. When this bit is cleared, the ALERT# pin will be deasserted and all status

registers will be cleared if the condition has been removed.

• ‘0’ - No interrupt pending.

• ‘1’ - A touch has been detected on one or more channels and the interrupt has been asserted.

6.2

Status Registers

All status bits are cleared when the device enters the Deep Sleep (DSLEEP = ‘1’ - see Section 6.1).

6.2.1

GENERAL STATUS - 02H

Bit 2 - MULT - Indicates that the device is blocking detected touches due to the Multiple Touch detection circuitry (see

Section 6.14). This bit will not cause the INT bit to be set and hence will not cause an interrupt.

Bit 1 - MTP - Indicates that the device has detected a number of sensor inputs that exceed the MTP threshold either via

the pattern recognition or via the number of sensor inputs (see Section 6.15). This bit will cause the INT bit to be set if

the MTP_ALERT bit is also set. This bit will not be cleared until the condition that caused it to be set has been removed.

Bit 0 - TOUCH - Indicates that a touch was detected. This bit is set if any bit in the Sensor Input Status register is set.

6.2.2

SENSOR INPUT STATUS - 03H

The Sensor Input Status Register stores status bits that indicate a touch has been detected. A value of ‘0’ in any bit

indicates that no touch has been detected. A value of ‘1’ in any bit indicates that a touch has been detected.

All bits are cleared when the INT bit is cleared and if a touch on the respective capacitive touch sensor input is no longer

present. If a touch is still detected, the bits will not be cleared (but this will not cause the interrupt to be asserted - see

Section 6.6).

Bit 5 - CS6 - Indicates that a touch was detected on Sensor Input 6.

Bit 4 - CS5 - Indicates that a touch was detected on Sensor Input 5.

Bit 3 - CS4 - Indicates that a touch was detected on Sensor Input 4.

Bit 2 - CS3 - Indicates that a touch was detected on Sensor Input 3.

Bit 1 - CS2 - Indicates that a touch was detected on Sensor Input 2.

Bit 0 - CS1 - Indicates that a touch was detected on Sensor Input 1.

TABLE 6-4:

STATUS REGISTERS

ADDR

R/W

Register

B7

B6

B5

B4

B3

B2

B1

B0

Default

02h

R

General Status

-

-

-

-

-

MULT

MTP

TOUCH

00h

03h

R

Sensor Input Sta-

tus

-

-

CS6

CS5

CS4

CS3

CS2

CS1

00h