400
Tp
ø
A23 to A0
RAS5
to
RAS2
UCAS
LCAS
OE
,
RD
HWR
D15 to D0
OE
,
RD
HWR
D15 to D0
AS
Tr
Tc1
t
CPW1
t
AC3
t
RCH
t
RCS1
Tc2
Tc1
Tc2
Read
Write
DACK
and
EDACK
timing: when DDS = 1 and EDDS = 1
RAS
timing: when RAST = 0
Note:
DACK0
,
DACK1
EDACK0
to
EDACK3
t
DACD1
t
DACD2
t
EDACD1
t
EDACD2
Figure 7.15 DRAM Access Timing: Two-State Burst Access
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