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CAP1298 数据表(PDF) 49 Page - Microchip Technology

部件名 CAP1298
功能描述  8-Channel Capacitive Touch Sensor Controller with Proximity Detection & Signal Guard
PDF  68 Pages
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制造商  MICROCHIP [Microchip Technology]
网页  http://www.microchip.com
标志 MICROCHIP - Microchip Technology

CAP1298 数据表(HTML) 49 Page - Microchip Technology

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 2013-2015 Microchip Technology Inc.
DS00001571B-page 49
CAP1298
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
011
16x
100
8x
101
4x
110
2x
1
1
1
1x - (least sensitive)
TABLE 5-11:
STANDBY THRESHOLD REGISTER
Addr
R/W
Register
B7
B6
B5B4
B3B2
B1B0
Default
43h
R/W
Standby
Threshold
-64
32
16
8
4
2
1
40h
TABLE 5-12:
SENSOR INPUT BASE COUNT REGISTERS
Addr
R/W
Register
B7
B6
B5B4
B3B2
B1B0
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 5-10:
STBY_SENSE BIT DECODE (CONTINUED)
STBY_SENSE[2:0]
Sensitivity Multiplier
210



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