參數資料
型號: HYB25D256160CC-5
廠商: INFINEON TECHNOLOGIES AG
英文描述: 256 Mbit Double Data Rate SDRAM
中文描述: 256兆雙倍數據速率SDRAM
文件頁數: 80/94頁
文件大小: 3326K
代理商: HYB25D256160CC-5
HYB25D256[16/40/80]0C[E/C/F/T](L)
256 Mbit Double-Data-Rate SDRAM
Timing Diagrams
Data Sheet
81
Rev. 1.6, 2004-12
5.5
Refresh: Auto Refresh Mode Command
Figure 43 shows the timing diagram for Auto Refresh Mode.
Figure 43
Auto Refresh Mode
t IH
t IS
t IH
t IS
t IH
t IS
t RF
C
t RP
t CL
t CH
t CK
PRE
N
OP
N
O
P
A
R
N
OP
AR
N
O
P
NOP
RA
BA
PRE
=
Pre
ch
a
rge
;ACT
=
Ac
tiv
e
;RA
=
Ro
w
ad
dres
s;
BA
=
Ban
kad
dres
s;
AR
=
A
u
to
ref
res
h.
NOP
comma
nds
ar
e
s
hown
fo
r
ea
se
of
illu
st
ration
;other
valid
comman
d
s
may
be
possible
at
th
ese
times.
DM,
DQ
,and
DQS
sign
als
ar
e
all
don
'tca
re/
h
igh-
Z
fo
rope
rat
ions
sh
own.
VAL
ID
VA
L
ID
AC
T
RA
CKE
Command
A0-A8
A9,
A11,A12
A10
BA
0,
B
A
1
DQS
DQ
DM
BA
NK
(S
)
Don’t
Car
e
ALL
BA
NKS
O
N
E
BANK
t RF
C
CK
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