CAP1114 datasheet(61/102 Pages) MICROCHIP

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Multiple Channel Capacitive Touch Sensor and LED Driver

Datasheet

SMSC CAP1114

Revision 1.1 (02-04-11)

DATASHEET

6.24

Lid Closure Configuration Register

The Lid Closure Configuration Register controls the settings for the lid closure detection circuitry.

Bit 7 - LID_CLOSE - Enables the lid closure circuitry.

‘0’ (default) - The lid closure circuitry is disabled.

‘1’ The lid closure circuitry is enabled. The device will use the Lid Closure Status registers in

combination with the Lid Closure Pattern register settings to determine when a Lid Closure Event

is flagged. In addition, the Noise Status bits are associated with lid closure.

Bit 1 - COMP_PTRN - Determines how the Lid Closure Status registers are compared against the Lid

Closure Pattern registers. See Section 6.26 for details on how the Lid Closure Pattern registers are

used.

‘0’ (default) - The Lid Closure Status registers are not compared directly against the Lid Closure

Pattern registers. Instead, the number of bits in the Lid Closure Status registers is compared to the

number of bits in the Lid Closure Pattern registers to determine whether a Lid Closure Event is

flagged.

‘1’ - The Lid Closure Status registers are compared directly against the Lid Closure Pattern

registers. If the bits set in the Lid Closure Pattern are also set in the Lid Status registers, a Lid

Closure Event is flagged.

Bit 0 - LID_ALRT - Enables an interrupt if a Lid Closure Event occurs.

‘0’ (default) - If a Lid Closure Event occurs, the ALERT pin is not asserted.

‘1’ - If a Lid Closure Event occurs, the ALERT pin will be asserted.

6.25

Lid Closure Queue Control Register

The Lid Closure Queue Control Register determines the number of consecutive samples for which a

single sensor output is above the Lid Closure Threshold before it is flagged.

A value of 0000b is decoded as 1.

4 (default)

Table 6.34 Lid Closure Configuration Register

ADDR

R/W

DEFAULT

2Bh

R/W

Lid Closure

Config

LID_

-----

COMP_

PTRN

LID_

ALRT

00h

Table 6.35 Lid Closure Queue Control Register

ADDR

R/W

DEFAULT

2Ch

R/W

Lid Closure

Queue Control

QUEUE_L_B[2:0]

02h

Table 6.33 G_MULT_T Bit Decode (continued)

G_MULT_T[1:0]

NUMBER OF SIMULTANEOUS

TOUCHES

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