HD6432670 Hitachi, HD6432670 Datasheet - Page 290

• Manufacturer Part Number: HD6432670
• Description: (HD64F267x Series) 16-Bit Microcomputer
• Manufacturer: Hitachi

Rev. 2.0, 04/02, page 244 of 906
Figure 6.82 Example of Timing for Idle Cycle Insertion in Case of Consecutive Read and
Write Accesses to Continuous Synchronous DRAM Space in RAS Down Mode
Precharge-sel
DQMU, DQML
Address bus
Data bus
CKE
ø
PALL ACTV READ
(SDWCD = 1, CAS Latency 2)
Column
address
T
p
Continuous synchronous
DRAM space read
address
Row
T
r
T
c1
address
Column
T
cl
High
T
c2
Idle cycle
Continuous synchronous
DRAM space write
NOP
T
External address
i
T
c1
WRIT
T
c2