901
t
CASD1
TR
C
TR
C
TR
r
TR
p
ø
CS5
to
CS2
(RAS)
CAS
,
LCAS
t
CSD2
t
CSR
t
CSD2
t
CASD1
Figure 25-13 DRAM Self-Refresh Timing
ø
BREQ
BACK
A23 to A0
CS7
to
CS0
,
AS
,
RD
,
HWR
, L
WR
t
BZD
t
BZD
t
BACD
t
BACD
t
BRQS
t
BRQS
Figure 25-14 External Bus Release Timing
ø
BREQO
t
BRQOD
t
BRQOD
Figure 25-15 External Bus Request Output Timing