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CAP1208 Datasheet(PDF) 54 Page - Microchip Technology

Part # CAP1208
Description  8-Channel Capacitive Touch Sensor
PDF  67 Pages
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Manufacturer  MICROCHIP [Microchip Technology]
Direct Link  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

CAP1208 Datasheet(HTML) 54 Page - Microchip Technology

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8-Channel Capacitive Touch Sensor
Datasheet
DS00001570B-page 54
 2014 Microchip Technology Inc.
5.24
Standby Threshold Register
The Standby Threshold register stores 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 pad changes due to the
capacitance associated with a touch. If the sensor input change exceeds the threshold settings, a
touch is detected.
5.25
Sensor Input Base Count Registers
101
4x
110
2x
1
1
1
1x - (least sensitive)
Table 5.42 Standby Threshold Register
ADDR
R/W
REGISTER
B7
B6
B5
B4
B3
B2
B1
B0
DEFAULT
43h
R/W
Standby
Threshold
-64
32
16
8
4
2
1
40h
Table 5.43 Sensor Input Base Count Registers
ADDR
R/W
REGISTER
B7
B6
B5
B4
B3
B2
B1
B0
DEFAULT
50h
R
Sensor Input 1
Base Count
128
64
32
16
8
4
2
1
C8h
51h
R
Sensor Input 2
Base Count
128
64
32
16
8
4
2
1
C8h
52h
R
Sensor Input 3
Base Count
128
64
32
16
8
4
2
1
C8h
53h
R
Sensor Input 4
Base Count
128
64
32
16
8
4
2
1
C8h
54h
R
Sensor Input 5
Base Count
128
64
32
16
8
4
2
1
C8h
55h
R
Sensor Input 6
Base Count
128
64
32
16
8
4
2
1
C8h
56h
R
Sensor Input 7
Base Count
128
64
32
16
8
4
2
1
C8h
57h
R
Sensor Input 8
Base Count
128
64
32
16
8
4
2
1
C8h
Table 5.41 STBY_SENSE Bit Decode (continued)
STBY_SENSE[2:0]
SENSITIVITY MULTIPLIER
210



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