AK4184A Datasheet, PDF (23/36 Pages) Asahi Kasei Microsystems – TSC with Keypad Scanner and GPIO Expander

[AK4184A]
Ωʔύουσό΢ϯε࣌ؒͷઃఆΛ[DBN2:DBN0]Ͱߦ͍·͢ɻॳظ஋͸ɺ1ms Ͱ͢ɻ
DBN2
0
0
0
0
1
1
1
1
DBN1 DBN0
Function
0
0 Debounce time: 1ms (default)
0
1 Debounce time: 2ms
1
0 Debounce time: 5ms
1
1 Debounce time: 10ms
0
0 Debounce time: 20ms
0
1 Debounce time: 50ms
1
0 Debounce time: 80ms
1
1 Debounce time: 100ms
Table 14. Keypad Debounce Time Interval
Ωʔύουϗʔϧυ࣌ؒͷઃఆΛ[HLD2:HLD0]Ͱߦ͍·͢ɻॳظ஋͸ɺ100μs Ͱ͢ɻ
HLD2
0
0
0
0
1
1
1
1
HLD1
0
0
1
1
0
0
1
1
HLD0
Function
0 Wait 100μs for next Debounce scan (default)
1 Wait 1 debounce time interval to the next debounce scan
0 Wait 2 debounce time interval to the next debounce scan
1 Wait 3 debounce time interval to the next debounce scan
0 Wait 4 debounce time interval to the next debounce scan
1 Wait 5 debounce time interval to the next debounce scan
0 Wait 6 debounce time interval to the next debounce scan
1 Wait 7 debounce time interval to the next debounce scan
Table 15. Keypad Hold Time Control
■ Keypad Mask Register (PAGE 1)
ΩʔύουϚεΫϨδελͷϑΥʔϚοτ͸ Table 17 ҎԼʹࣔ͠·͢ɻϚεΫ͞Εͨσʔλ͸ɺKPDATA2
Registerʹରͯ͠༗ޮͰ͢ɻ
Addr NAME D15 D14 D13 D12 D11 D10 D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
01H KPMASK1 0 KM15 KM14 KM13 KM12 KM11 KM10 KM9 KM8 KM7 KM6 KM5 KM4 KM3 KM2 KM1
02H KPMASK2 0 KM30 KM29 KM28 KM27 KM26 KM25 KM24 KM23 KM22 KM21 KM20 KM19 KM18 KM17 KM16
Table 16. Keypad Mask Register Format
KMx
0
1
Description
ΩʔύουεΩϟϯσʔλΛϚεΫ͠·ͤΜɻ(default)
ΩʔύουεΩϟϯσʔλΛϚεΫ͠·͢ɻ
Table 17. Keypad Mask bit
͜ͷϨδελͷ֤Ϗοτ͸ɺΩʔύου্ͷ֤ΩʔʹରԠ͠·͢ɻ֤ϏοτͱΩʔύου্ͷΩʔͷؔ܎͸
Table 24 ͷ௨ΓͰ͢ɻKPMASK1, 2 ͷॳظ஋͸ 0000HͰɺΩʔύουεΩϟϯσʔλͷϚεΫΛߦ͍·ͤΜɻ
MS0947-J-00
-23-
2008/04