HD643303x Hitachi, HD643303x Datasheet - Page 454

• Manufacturer Part Number: HD643303x
• Description: Hitachi Microcomputer
• Manufacturer: Hitachi

ø
A
AS
RD
(read)
D
(read)
WR (write)
D
(write)
19
7
7
to D
to D
to A
0
0
0
t
t
t
CH
CF
WDD
Figure 17-4 Basic Bus Cycle: Two-State Access
t
t
t
t
AS1
AS1
AS1
AD
t
T
cyc
1
t
t
t
ASD
ASD
t
ASD
ACC1
t
CL
t
t
ACC3
ACC3
t
WDS1
t
WSW1
t
CR
t
439
RDS
T
2
t
t
t
SD
SD
SD
t
RDH
t
WDH
t
t
t
AH
AH
AH
t
t
t
PCH
PCH
PCH