8 Channel Capacitive Touch Sensor with 8 LED Drivers
Datasheet
event, it will generate an interrupt when a touch is detected and at the repeat rate so long as the
touch is held. It will not generate an interrupt when a release is detected.
Bit 6 - CS7_RPT_EN - Enables the repeat rate for Capacitive Touch Sensor 7.
Bit 5 - CS6_RPT_EN - Enables the repeat rate for Capacitive Touch Sensor 6.
Bit 4 - CS5_RPT_EN - Enables the repeat rate for Capacitive Touch Sensor 5.
Bit 3 - CS4_RPT_EN - Enables the repeat rate for Capacitive Touch Sensor 4.
Bit 2 - CS3_RPT_EN - Enables the repeat rate for Capacitive Touch Sensor 3.
Bit 1 - CS2_RPT_EN - Enables the repeat rate for Capacitive Touch Sensor 2.
Bit 0 - CS1_RPT_EN - Enables the repeat rate for Capacitive Touch Sensor 1.
5.14 Multiple Touch Configuration Register
Table 5.21 Multiple Touch Configuration
ADDR
R/W
REGISTER
B7
B6
B5
B4
B3
B2
B1
B0
DEFAULT
Multiple Touch
Config
MULT_
BLK_EN
2Ah
R/W
-
-
-
B_MULT_T[1:0]
-
-
80h
The Multiple Touch Configuration register controls the settings for the multiple touch detection circuitry.
These settings determine the number of simultaneous buttons that may be pressed before action is
taken.
Bit 7 - MULT_BLK_EN - Enables the multiple button blocking circuitry.
‘0’ - The multiple touch circuitry is disabled. The device will not block multiple touches.
‘1’ (default)- The multiple touch circuitry is enabled. The device will accept the number of touches
equal to programmed multiple touch threshold and block all others. It will remember which sensor
is valid and block all others until that sensor has been released.
Bits 3 - 2 - B_MULT_T[1:0] - Determines the number of simultaneous touches on all sensors before a
Multiple Touch Event is detected and sensors are blocked. The bit decode is given by Table 5.22.
Table 5.22 B_MULT_T Bit Decode
B_MULT_T[1:0]
1
0
NUMBER OF SIMULTANEOUS TOUCHES
0
0
1
1
0
1
0
1
1 (default)
2
3
4
Revision 1.1 (08-05-09)
SMSC CAP1088
DATA4S6HEET
SMSC [ SMSC CORPORATION ]
