HD6417021 Hitachi Semiconductor, HD6417021 Datasheet - Page 480
HD6417021
Manufacturer Part Number
HD6417021
Description
SuperH RISC engine
Manufacturer
Hitachi Semiconductor
Datasheet
1.HD6417021.pdf
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HITACHI 472
WRH, WRL,
AD15–AD0
AD15–AD0
WR (Write)
HBS, LBS
A21–A0
DACK0
DACK1
DACK0
DACK1
(Read)
(Read)
(Read)
(Write)
(Write)
WAIT
CS6
RD
CK
AH
t
AD
Figure 19.19 Address/Data Multiplex I/O Bus Cycle
T
1
t
t
t
AHD1
MAD
MAD
t
DACD1
Address
Address
T
2
t
t
WTS
t
AHD2
CSD3
t
t
t
WTH
MAH
MAH
t
RDD
T
3
t
t
t
t
WSD1
WDD1
DACD3
RDAC3
t
t
(input)
DACD2
RSD
Data
Data (output)
T
4
t
t
t
DACD3
WSD2
CSD4
t
RDH
t
WDH
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