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CAP1114 датащи(PDF) 48 Page - Microchip Technology

номер детали CAP1114
подробное описание детали  Multiple Channel Capacitive Touch Sensor and LED Driver
PDF  102 Pages
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производитель  MICROCHIP [Microchip Technology]
домашняя страница  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

CAP1114 датащи(HTML) 48 Page - Microchip Technology

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Multiple Channel Capacitive Touch Sensor and LED Driver
Datasheet
Revision 1.1 (02-04-11)
48
SMSC CAP1114
DATASHEET
The Sensor Delta Count Registers store the delta count that is compared against the threshold used
to determine if a touch has been detected. The count value represents a change in input due to the
capacitance associated with a touch on one of the sensors and is referenced to a calibrated base “Not
touched” count value. The delta is an instantaneous change and is updated once per sensor per
sensing cycle (see Section 5.4.4 - sensor cycle).
The value presented is a standard 2’s complement number. In addition, the value is capped at a value
of 7Fh. A reading of 7Fh indicates that the sensitivity settings are too high and should be adjusted
accordingly (see Section 6.13).
The value is also capped at a negative value of FFh for negative delta counts which may result upon
a release.
6.12
Queue Control Register
12h
R
Sensor 3 Delta
Count
Sign
64
32
16
8
4
2
1
00h
13h
R
Sensor 4 Delta
Count
Sign
64
32
16
8
4
2
1
00h
14h
R
Sensor 5 Delta
Count
Sign
64
32
16
8
4
2
1
00h
15h
R
Sensor 6 Delta
Count
Sign
64
32
16
8
4
2
1
00h
16h
R
Sensor 7 Delta
Count
Sign
64
32
16
8
4
2
1
00h
17h
R
Sensor 8 Delta
Count
Sign
64
32
16
8
4
2
1
00h
18h
R
Sensor 9 Delta
Count
Sign
64
32
16
8
4
2
1
00h
19h
R
Sensor 10
Delta Count
Sign
64
32
16
8
4
2
1
00h
1Ah
R
Sensor 11
Delta Count
Sign
64
32
16
8
4
2
1
00h
1Bh
R
Sensor 12
Delta Count
Sign
64
32
16
8
4
2
1
00h
1Ch
R
Sensor 13
Delta Count
Sign
64
32
16
8
4
2
1
00h
1Dh
R
Sensor 14
Delta Count
Sign
64
32
16
8
4
2
1
00h
Table 6.14 Queue Control Register
ADDR
R/W
REGISTER
B7
B6
B5
B4
B3
B2
B1
B0
DEFAULT
1Eh
R/W
Button Queue
Control
-----
QUEUE_B[2:0]
03h
Table 6.13 Sensor Delta Count Registers (continued)
ADDR
R/W
REGISTER
B7
B6
B5
B4
B3
B2
B1
B0
DEFAULT



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