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GMS30004 Datasheet(PDF) 116 Page - Hynix Semiconductor

Part # GMS30004
Description  4-BIT SINGLE CHIP MICROCOMPUTERS
PDF  158 Pages
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Manufacturer  HYNIX [Hynix Semiconductor]
Direct Link  http://www.skhynix.com/kor/main.do
Logo HYNIX - Hynix Semiconductor

GMS30004 Datasheet(HTML) 116 Page - Hynix Semiconductor

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B - 2
1. Function
1) Stand-by
Oscillation is stop
Output of D0~D3 is
ÌLÌ, output of D4,D5 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
Input pin
K0
K1
K2
K3
R0
R1
R2
R3
1
2
3
4
5
6
7
8
D0
9
10
11
12
13
14
15
16
D1
17
18
19
20
21
22
23
24
D2
25
26
27
28
29
30
31
32
D3
2) Double action key
Combi of Key
Key Data
35h
K21 + K22
36h
K21 + K23
37h
K21 + K24
Appendix B Magic-
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