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CAP1114 Datasheet(PDF) 64 Page - Microchip Technology

Part # CAP1114
Description  Multiple Channel Capacitive Touch Sensor and LED Driver
PDF  102 Pages
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Manufacturer  MICROCHIP [Microchip Technology]
Direct Link  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

CAP1114 Datasheet(HTML) 64 Page - Microchip Technology

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Multiple Channel Capacitive Touch Sensor and LED Driver
Datasheet
Revision 1.1 (02-04-11)
64
SMSC CAP1114
DATASHEET
Note 6.1
Recalibration Samples refers to the number of samples that are measured and averaged
before the Base Count is updated.
Note 6.2
Update Time refers to the amount of time (in polling cycle periods) that elapses before the
Base Count is updated.
6.28
Sensor Threshold Registers
The Sensor Threshold Registers store the delta threshold that is used to determine if a touch has been
detected. When a touch occurs, the input signal of the corresponding sensor changes due to the
Table 6.39 CAL_CFG Bit Decode
CAL_CFG[2:0]
RECALIBRATION
SAMPLES (SEE
Note 6.1)
UPDATE TIME (SEE
Note 6.2)
21
0
0
0
0
16
16
00
1
32
32
01
0
64
64
0
1
1
256
256 (default)
1
0
0
256
1024
1
0
1
256
2048
1
1
0
256
4096
1
1
1
256
7936
Table 6.40 Sensor Threshold Registers
ADDR
R/W
REGISTER
B7
B6
B5
B4
B3
B2
B1
B0
DEFAULT
30h
R/W
Sensor 1
Threshold
-64
32
16
8
4
2
1
40h
31h
R/W
Sensor 2
Threshold
-64
32
16
8
4
2
1
40h
32h
R/W
Sensor 3
Threshold
-64
32
16
8
4
2
1
40h
33h
R/W
Sensor 4
Threshold
-64
32
16
8
4
2
1
40h
34h
R/W
Sensor 5
Threshold
-64
32
16
8
4
2
1
40h
35h
R/W
Sensor 6
Threshold
-64
32
16
8
4
2
1
40h
36h
R/W
Sensor 7
Threshold
-64
32
16
8
4
2
1
40h
37h
R/W
Group
Threshold
-64
32
16
8
4
2
1
40h



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