HD6412373R RENESAS [Renesas Technology Corp], HD6412373R Datasheet - Page 324

• Manufacturer Part Number: HD6412373R
• Description: Renesas 16-Bit Single-Chip Microcomputer H8S Family/H8S/2300 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

Section 6 Bus Controller (BSC)
6.73 and 6.74. In write access, DQMU and DQML are not in accordance with the settings of the
IDLC bit. The timing in this case is illustrated in figure 6.75.
Rev.7.00 Mar. 18, 2009 page 256 of 1136
REJ09B0109-0700
Precharge-sel
DQMU, DQML
Address bus
HWR, LWR
Data bus
CKE
CAS
RAS
WE
RD
φ
Figure 6.73 Example of Idle Cycle Operation in RAS Down Mode
PALL ACTV READ
address
(Read in Different Area) (IDLC = 0, CAS Latency 2)
Column
T
Continuous synchronous
DRAM space read
p
address
address
Row
Row
T
r
T
Column address 1
c1
T
cl
High
High
T
c2
External space read
T
External address
External address
1
NOP
T
2
T
3
Idle cycle
T
Continuous synchronous
DRAM space read
i
Column address 2
READ
T
c1
T
Cl
NOP
T
c2