8 Channel Capacitive Touch Sensor with 2 LED Drivers
Datasheet
5.8
Sensor Input Configuration Register
Table 5.12 Sensor Input Configuration Register
B7 B6 B5 B4 B3
MAX_DUR[3:0]
ADDR
22h
R/W
REGISTER
B2
B1
B0
DEFAULT
Sensor Input
Configuration
R/W
RPT_RATE[3:0]
A4h
The Sensor Input Configuration Register controls timings associated with the Capacitive sensor inputs
1 - 8.
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
0
0
1
1
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
560ms
840ms
1120ms
1400ms
1680ms
2240ms
2800ms
3360ms
1
1
1
1
1
1
1
1
3920ms
4480ms
5600ms (default)
6720ms
7840ms
8906ms
10080ms
11200ms
Bits 3 - 0 - RPT_RATE[3:0] - (default 0100b) Determines the time duration between interrupt assertions
when auto repeat is enabled. The resolution is 35ms the range is from 35ms to 560ms as shown in
Table 5.14.
SMSC CAP1128
Revision 1.32 (01-05-12)
DATA4S9HEET
SMSC [ SMSC CORPORATION ]
