HD6412373R RENESAS [Renesas Technology Corp], HD6412373R Datasheet - Page 330

• 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)
Rev.7.00 Mar. 18, 2009 page 262 of 1136
REJ09B0109-0700
Figure 6.79 Example of Idle Cycle Operation after Continuous Synchronous DRAM Space
Precharge-sel
DQMU, DQML
Address bus
not inserted after continuous synchronous DRAM space read access even if bits ICIS1 and
ICIS0 are set to 1.
Data bus
CKE
CAS
RAS
WE
RD
Read Access (Read between Different Area) (IDLC = 0, CAS Latency 2)
φ
PALL ACTV READ
address
Column
T
p
Continuous synchronous
DRAM space read
address
address
Row
Row
T
r
T
Column address 1
c1
T
cl
T
c2
Idle cycle
High
T
i
External space read
External address
External address
T
1
NOP
T
2
T
3
Continuous synchronous
DRAM space read
T
i
Column address 2
T
c1
READ
T
Cl
NOP
T
c2