GMS30004 Datasheet, PDF (152/158 Pages) Hynix Semiconductor – 4-BIT SINGLE CHIP MICROCOMPUTERS

ë Appendix G Magic- c
1. Function
1) Stand-by
Oscillation is stop
Output of D0~D5, D8, D9 is ÌLÌ, Output of D6~D7 is ÌHÌ
2) Condition of stand-by mode
After reset
When scan strobe output is over, there is not any key input.
3) Release of stand-by mode
One of the key scan input (K0~K3, R0~R3) is change to ÌLÌ level
2. Key Input
1) Key-data mapping table
Output pin
D0
D8
D9
D1
D2
D3
D4
D5
Input pin
K0
K1
K2
K3
R0
R1
R2
R3
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
2) Double action key
Combi of Key
K21 + K22
K21 + K23
K21 + K24
Key Data
B5h
B6h
B7h
G -2