3 Channel Capacitive Touch Sensor with 3 LED Drivers
Datasheet
Bit 2 - CS3_EN - Enables the CS3 input to be included during the sampling cycle.
‘0’ - The CS3 input is not included in the sampling cycle.
‘1’ (default) - The CS3 input is included in the sampling cycle.
Bit 1 - CS2_EN - Enables the CS2 input to be included during the sampling cycle.
Bit 0 - CS1_EN - Enables the CS1 input to be included during the sampling cycle.
5.8
Sensor Input Configuration Register
Table 5.12 Sensor Input Configuration Register
ADDR
22h
R/W
REGISTER
B7
B6
B5
B4
B3
B2
B1
B0
DEFAULT
Sensor Input
Configuration
R/W
MAX_DUR[3:0]
RPT_RATE[3:0]
A4h
The Sensor Input Configuration Register controls timings associated with the Capacitive sensor inputs
1 - 3.
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, as shown in Table 5.13.
Table 5.13 MAX_DUR Bit Decode
MAX_DUR[3:0]
3
2
1
0
TIME BEFORE RECALIBRATION
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
560ms
840ms
1120ms
1400ms
1680ms
2240ms
2800ms
3360ms
SMSC CAP1133
Revision 1.32 (01-05-12)
DATA3S3HEET
SMSC [ SMSC CORPORATION ]
