—
22
—
7-3.
ROM: LSI4 (
µ
PD23C1001EAGZ)
Pin No.
Name
I/O
Description
1~5,12,13,16~24,39
A0~16
In
Address bus
25,28,29,31~33,36,37
D0~7
I/O
Data bus
6,15,26,35
NC
In
0 V
7,14,27,34
NC
-
Not used
8
DC
In
0 V
9~11
DC/PGM_,VCC,NC/VPP
In
Power supply terminal (+5.3 V)
30
GND
In
GND 0 V
38
CEB
In
Chip enable signal from LSI1
40
OEB
In
0 V
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
A11
A9
A8
A13
A14
NC
NC
DC
DC/PGM_
VCC
NC/VPP
A16
A15
NC
NC
A12
A7
A6
A5
A4
OEB
A10
CEB
D7
D6
NC
NC
D5
D4
D3
GND
D2
D1
NC
NC
D0
A0
A1
A2
A3
µ
PD23C1001EAGZ
(LSI4)
Содержание LX-551AQ
Страница 1: ...R SF 5300E LX 551AQ JAN 1995 with price SF 5300E...
Страница 3: ...1 1 SCHEMATIC DIAGRAM 1 1 MAIN PCB...
Страница 4: ...2 1 2 KEY MATRIX 1...
Страница 37: ...MA0200651A...