HD64F2357VF13 Datasheet, PDF (186/1049 Pages) Renesas Technology Corp – Old Company Name in Catalogs and Other Documents

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Address bus
RD
Data bus
External read
T₁ T₂ T₃
DRAM space read
T_p
T_r
T_c1 T_c2
Figure 6-34 Example of DRAM Access after External Read
EXTAL
Address
RD
RAS
CAS, LCAS
Data bus
DRAM space read
T_p T_r
T_c1 T_c2
External read
DRAM space read
T_I
T₁
T₂
T₃ T_cI T_c1 T_c2
Idle cycle
Figure 6-35 (a) Example of Idle Cycle Operation in RAS Down Mode (ICIS1 = 1)
EXTAL
Address
RD
HWR
RAS
CAS, LCAS
Data bus
DRAM space read
T_p T_r
T_c1 T_c2
External read
DRAM space write
T_I
T₁
T₂
T₃ T_cI T_c1 T_c2
Idle cycle
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