Renesas H8S Series Hardware Manual page 184
16-bit single-chip microcomputer
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Also See for H8S Series:
- Hardware manual (1038 pages) ,
- User manual (38 pages) ,
- Hardware manual (609 pages)
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EXTAL
Address
RD
RAS
CAS, LCAS
Data bus
Figure 6-35 (a) Example of Idle Cycle Operation in RAS Down Mode (ICIS1 = 1)
EXTAL
Address
RD
HWR
RAS
CAS, LCAS
Data bus
Figure 6-35 (b) Example of Idle Cycle Operation in RAS Down Mode (ICIS0 = 1)
Rev.6.00 Oct.28.2004 page 156 of 1016
REJ09B0138-0600H
External read
T
1
ø
Address bus
RD
Data bus
Figure 6-34 Example of DRAM Access after External Read
DRAM space read
T
T
T
T
p
r
c1
DRAM space read
T
T
T
T
p
r
c1
DRAM space read
T
T
T
T
2
3
p
r
External read
T
T
T
c2
I
1
2
External read
T
T
T
c2
I
1
2
T
T
c1
c2
DRAM space read
T
T
T
T
3
cI
c1
c2
Idle cycle
DRAM space write
T
T
T
T
3
cI
c1
c2
Idle cycle
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