— 23 —
10-8. Operation program ROM pin discriptions (
µ
PD23C4001EBGW-301)
Pin No.
Name
In/Out
Status
Status
Description
of OFF
of ON
2, 4~6, 9~13, A0~A14
In
L
Pulse
Address bus line (A0~A14)
15~18
21~23, 25~29 D1~D8
In/Out
L
Pulse
Data bus line (IO0~IO7)
24
GND
In
L
L
GND terminal
31
CSB
In
H
Pulse
Chip select signal
1
OEB
In
H
Pulse
Read signal from CPU
7
WEB
In
H
Pulse
Write signal from CPU
8
VCC
In
H
H
VDD terminal
1
NC
-
-
-
No connection
2~12, 23,
A0~A16
In
L
Pulse
Address bus line (A0~A15)
25~28,31
13~15, 17~21 IO0~IO7
Out
L
Pulse
Data bus line (IO0~IO7)
16
VSS
Power
GND
GND
GND terminal
22
CS1
In
H
Pulse
Chip selection terminal 1
24
OEB
In
H
Pulse
Output enable terminal
29
WEB
In
H
Pulse
Write enable terminal
30
CS2
In
H
H
Chip selection terminal 2
32
VDD
Power
+5V
+5V
VDD terminal
Pin No.
Name
In/Out
Status
Status
Description
of OFF
of ON
1,30,31
NC
-
L
+5V
Connected to VCC
2~12, 23,
A0~A16
In
L
Pulse
Address bus line (A0~A14,RA15,RA16)
Pin No.
Name
In/Out
Status
Status
Description
of OFF
of ON
25~29
13~15, 17~21 IO0~IO7
Out
L
Pulse
Data bus line (IO0~IO7)
16
GND
Power
GND
GND
GND terminal
22
CE
In
L
Pulse
Chip selection terminal
24
OE
In
L
Pulse
Output enable terminal
32
VCC
Power
L
+5V
VCC terminal
10-10. RAM pin discriptions (HM62L864LFP-12MRL)
10-9. RAM pin descriptions (
µ
PD43256AGU-10/12/15LL)
Summary of Contents for SF-8350
Page 1: ...SF 8350 LX 572 JUNE 1993 R without price...
Page 3: ...1 1 SCHEMATIC DIAGRAM 1 1 Main Block...
Page 4: ...2 1 2 Display Block...
Page 5: ...3 1 3 Key Matrix...
Page 14: ...13...
Page 33: ...32 13 PARTS LIST SF 8350...
Page 34: ...33...
Page 35: ...34 14 PCB VIEW SF 8350...
Page 36: ...35 15 ASSEMBLY VIEW SF 8350...
Page 37: ...8 11 10 Nishi Shinjuku Shinjuku ku Tokyo 160 Japan Telephone 03 3347 4926...
