398
Tp
t
AD
t
AS3
t
AH1
t
CSD2
t
PCH2
t
AS2
t
AC1
t
OED1
t
OED1
t
AA3
t
AC4
t
WCS1
t
WCH1
t
WRD2
t
WDD
t
WDS1
t
WDH2
t
RDS2
t
RDH2
t
AH2
t
CSD3
t
CASD1
t
CASD1
t
CASW1
t
AD
ø
A23 to A0
RAS5
to
RAS2
UCAS
LCAS
OE
,
RD
HWR
D15 to D0
OE
,
RD
HWR
D15 to D0
AS
Tr
Tc1
Tc2
Read
Write
DACK0
,
DACK1
EDACK0
to
EDACK3
t
DACD1
t
DACD2
t
EDACD1
t
EDACD2
Note:
DACK
and
EDACK
timing: when DDS = 0 and EDDS = 0
RAS
timing: when RAST = 0
t
WRD2
Figure 7.13 DRAM Access Timing: Two-State Access
Summary of Contents for H8S/2670
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