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AK4160 Datasheet(PDF) 25 Page - Asahi Kasei Microsystems

Part # AK4160
Description  16-channel Capacitive Touch Sensor IC
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Manufacturer  AKM [Asahi Kasei Microsystems]
Direct Link  http://www.akm.com
Logo AKM - Asahi Kasei Microsystems

AK4160 Datasheet(HTML) 25 Page - Asahi Kasei Microsystems

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[AK4160]
MS1313-E-01
2011/11
- 25 -
GPIO Input Control Register
Address 0x35/0x37/…/0x43 (W/R) Default 0x00
Description
D7
D6
D5
D4
D3
D2
D1
D0
GPIO Input Control
DIR
Reserved
Reserved
Reserved
IRQC[1]
IRQC[0]
PE
PU
Address 0x36/0x38/…/0x44 (W/R) Default 0x00
Description
D7
D6
D5
D4
D3
D2
D1
D0
GPIO Input Control
DEB1[3]
DEB1[2]
DEB1[1]
DEB1[0]
DEB0[3]
DEB0[2]
DEB0[1]
DEB0[0]
Bits
Name
Description
D7
DIR
This bit should be set to “0” at the input setting of GPIO.
D6-D4
Reserved
Reserved: This bit should be written by “0”, when writing.
D3-D2
IRQC
GPIO Interrupt Setting
00: No Interrupt
01: Interrupt on a rising edge
10: Interrupt on a falling edge
11: Interrupt on both edges
D1
PE
Pull-up, Pull-down Enable
0: Invalid
1: Valid. The direction is fixed by PU bit.
D0
PU
Pull-up / Pull-down Selector
0: Pull-down
1: Pull-up
Bits
Name
Description
D7-D4
DEB1
Debounce Setting at Rising Edge
When “1” is detected “2 x 2DEB1” times in a row with 31.25us of the sampling
frequency, the result of input is set to “1”. (Table 8)
However, when DEB1[3:0] bits = “0”, the result is updated by detecting “1” one
time.
D3-D0
DEB0
Debounce Setting at Falling Edge
When “1” is detected “2 x 2DEB0” times in a row with 31.25us of the sampling
frequency, the result of input is set to “0”. (Table 8)
However, when DEB0[3:0] bits = “0”, the result is updated by detecting “1” one
time.
DEB0, DEB1
Consecutive
number
Consecutive
time (ms)
DEB0, DEB1
Consecutive
number
Consecutive
time (ms)
0000
1
-
1000
512
16
0001
4
0.125
1001
1024
32
0010
8
0.25
1010
2048
64
0011
16
0.5
1011
4096
128
0100
32
1
1100
8192
256
0101
64
2
1101
16384
512
0110
128
4
1110
32768
1024
0111
256
8
1111
32768
1024
Table 8. Debounce Setting
Refer to Table 7 for the correspondence of the register address and the GPIO pin.


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