參數(shù)資料
型號(hào): M13S32321A
廠商: Elite Semiconductor Memory Technology Inc.
英文描述: 256K x 32 Bit x 4 Banks Double Data Rate SDRAM
中文描述: 256K × 32位× 4個(gè)銀行雙倍數(shù)據(jù)速率SDRAM
文件頁(yè)數(shù): 8/49頁(yè)
文件大小: 769K
代理商: M13S32321A
ES MT
M13S32321A
Elite Semiconductor Memory Technology Inc.
Publication Date : Sep. 2006
Revision : 1.0 8/49
PRECHARGE command
period
t
RP
4
-
4
-
t
CK
ACTIVE to READ with
AUTOPRECHARGE
command
t
RAP
18
120K
18
120K
ns
ACTIVE bank A to ACTIVE
bank B command
t
RRD
2
-
2
-
t
CK
Write recovery time
t
WR
2
-
2
-
t
CK
Write data in to READ
command delay
t
WTR
2
-
2
-
t
CK
Col. Address to Col. Address
delay
t
CCD
1
-
1
-
t
CK
Average periodic refresh
interval
t
REFI
-
7.8
-
7.8
us
Write preamble
t
WPRE
0.25
-
0.25
-
t
CK
Write postamble
t
WPST
0.4
0.6
0.4
0.6
t
CK
DQS read preamble
t
RPRE
0.9
1.1
0.9
1.1
t
CK
DQS read postamble
t
RPST
0.4
0.6
0.4
0.6
t
CK
Clock to DQS write preamble
setup time
t
WPRES
0
-
0
-
ns
Load Mode Register /
Extended Mode register
cycle time
t
MRD
2
-
2
-
t
CK
Exit self refresh to READ
command
t
XSRD
200
-
200
-
t
CK
Exit self refresh to
non-READ command
t
XSNR
75
-
75
-
ns
Autoprecharge write
recovery+Precharge time
t
DAL
(t
WR
/t
CK
)
+
(t
RP
/t
CK
)
(t
WR
/t
CK
)
+
(t
RP
/t
CK
)
t
CK
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