Datasheet

R01DS0052EJ0140 Rev.1.40 Page 108 of 150
2014.07.16
RX62N Group, RX621 Group 5. Electrical Characteristics
Figure 5.18 SDRAM Space Multiple Write Bus Timing
ACT
WR
PRAWR WR WR
SDCLK
A18 to A0
AP*
1
SDCS#
RAS#
CAS#
WE#
CKE
DQMn
D31 to D0
t
AD2
t
AD2
t
AD2
t
AD2
t
AD2
t
AD2
t
AD2
t
AD2
t
AD2
t
AD2
t
AD2
t
AD2
t
AD2
t
CSD2
t
CSD2
t
CSD2
t
CSD2
t
CSD2
t
RASD
t
RASD
t
RASD
t
RASD
t
RASD
t
CASD
t
CASD
t
CASD
t
WED
t
WED
(High)
t
DQMD
t
DQMD
t
WDD2
t
WDH2
t
WDD2
t
WDH2
C1 C2 C3
Row
Address
C0
(Column Address)
PRA
command
Note 1: Address pins for output of the precharge-setting command (Precharge-sel)
for SDRAM.