Table of Contents
Advertisement
10-8. Operation program ROM pin discriptions (
Pin No.
Name
1,30,31
NC
2~12, 23,
A0~A16
25~29
13~15, 17~21 IO0~IO7
16
GND
22
CE
24
OE
32
VCC
10-9. RAM pin descriptions (
Pin No.
Name
2, 4~6, 9~13, A0~A14
15~18
21~23, 25~29 D1~D8
24
GND
31
CSB
1
OEB
7
WEB
8
VCC
10-10. RAM pin discriptions (HM62L864LFP-12MRL)
Pin No.
Name
1
NC
2~12, 23,
A0~A16
25~28,31
13~15, 17~21 IO0~IO7
16
VSS
22
CS1
24
OEB
29
WEB
30
CS2
32
VDD
In/Out
Status
Status
of OFF
of ON
-
L
+5V
In
L
Pulse
Out
L
Pulse
Power
GND
GND
In
L
Pulse
In
L
Pulse
Power
L
+5V
µ
PD43256AGU-10/12/15LL)
In/Out
Status
Status
of OFF
of ON
In
L
Pulse
In/Out
L
Pulse
In
L
L
In
H
Pulse
In
H
Pulse
In
H
Pulse
In
H
H
In/Out
Status
Status
of OFF
of ON
-
-
-
In
L
Pulse
Out
L
Pulse
Power
GND
GND
In
H
Pulse
In
H
Pulse
In
H
Pulse
In
H
H
Power
+5V
+5V
— 23 —
µ
PD23C4001EBGW-301)
Description
Connected to VCC
Address bus line (A0~A14,RA15,RA16)
Data bus line (IO0~IO7)
GND terminal
Chip selection terminal
Output enable terminal
VCC terminal
Description
Address bus line (A0~A14)
Data bus line (IO0~IO7)
GND terminal
Chip select signal
Read signal from CPU
Write signal from CPU
VDD terminal
Description
No connection
Address bus line (A0~A15)
Data bus line (IO0~IO7)
GND terminal
Chip selection terminal 1
Output enable terminal
Write enable terminal
Chip selection terminal 2
VDD terminal
Hide quick links:
Advertisement
Table of Contents
