參數(shù)資料
型號： AK4184VG
廠商： Asahi Kasei Microsystems Co.,Ltd
英文描述： TSC with Keypad Scanner and GPIO Expander
中文描述： 臺糖與鍵盤掃描儀和GPIO擴展
文件頁數(shù)： 23/36頁
文件大?。?/td> 597K
代理商： AK4184VG
[AK4184]
MS0603-E-00
2007/04
23
The keypad debounce time interval is determined by [DBN2:DBN0]. The default setting is 1ms.
DBN2 DBN1
0
0
0
0
0
1
0
1
1
0
1
0
1
1
1
1
Table 14. Keypad Debounce Time Interval
DBN0
0
1
0
1
0
1
0
1
Function
Debounce time: 1ms (default)
Debounce time: 2ms
Debounce time: 5ms
Debounce time: 10ms
Debounce time: 20ms
Debounce time: 50ms
Debounce time: 80ms
Debounce time: 100ms
The keypad hold time is determined by [HLD2:HLD0]. The default setting is 100
μ
s.
HLD2 HLD1
0
0
0
0
1
1
1
1
HLD0
0
1
0
1
0
1
0
1
Function
0
0
1
1
0
0
1
1
Wait 100
μ
s for next Debounce scan (default)
Wait 1 debounce time interval to the next debounce scan
Wait 2 debounce time interval to the next debounce scan
Wait 3 debounce time interval to the next debounce scan
Wait 4 debounce time interval to the next debounce scan
Wait 5 debounce time interval to the next debounce scan
Wait 6 debounce time interval to the next debounce scan
Wait 7 debounce time interval to the next debounce scan
Table 15. Keypad Hold Time Control
■
Keypad Mask Register (PAGE 1)
This register controls the key to be masked after a debounce key scan. The keypad mask register format is described in
the following table. This register setting is valid for the data in the KPDATA2 register.
Addr
NAME
D15
D14
D13
D12
D11
D10
D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
01H
02H
KPMASK1
KPMASK2
0
0
KM15
KM30
KM14
KM29
KM13
KM28
KM12
KM27
Table 16. Keypad Mark Register Format
Description
Disable keypad data masked (default)
Enable keypad data masked
Table 17. Keypad Mask bit
KM11
KM26
KM10
KM25
KM9
KM24
KM8
KM23
KM7
KM22
KM6
KM21
KM5
KM20
KM4
KM19
KM3
KM18
KM2
KM17
KM1
KM16
KMx
0
1
The number of the keypad corresponds to each bit of this register .This relationship is shown in Table 24. KPMASK1,
KPMASK2 default setting is 0000H (disable keypad data masked on KPDATA2)
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