Datasheet

R01DS0052EJ0140 Rev.1.40 Page 106 of 150
2014.07.16
RX62N Group, RX621 Group 5. Electrical Characteristics
Figure 5.16 SDRAM Space Single Write Bus Timing
t
AD2
SDCLK
A18 to A0
SDCS#
AP*
1
DQMn
D31 to D0
RAS#
CAS#
WE#
CKE
Note 1: Address pins for output of the precharge-setting command (Precharge-sel) for SDRAM.
t
DQMD
(High)
Row
Address
Column Address
SDRAM command ACT WR PRA
t
AD2
t
CSD2
t
RASD
t
WED
t
CASD
t
WDD2
t
AD2
t
AD2
t
CSD2
t
RASD
t
AD2
t
AD2
t
CSD2
t
RASD
t
AD2
t
AD2
t
CSD2
t
RASD
t
CSD2
t
CSD2
t
CASD
t
WED
t
WED
t
WED
t
WDH2
PRA
command