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參數(shù)資料
| 型號： | W3DG7266V75D2 |
| 廠商： | WHITE ELECTRONIC DESIGNS CORP |
| 元件分類： | DRAM |
| 英文描述： | 64M X 72 SYNCHRONOUS DRAM MODULE, 5.4 ns, DMA168 |
| 封裝： | DIMM-168 |
| 文件頁數(shù)： | 5/6頁 |
| 文件大?。?/td> | 171K |
| 代理商： | W3DG7266V75D2 |
W3DG7266V-D2
PRELIMINARY
5
White Electronic Designs Corporation (602) 437-1520 www.whiteedc.com
White Electronic Designs
May 2005
Rev. 3
White Electronic Designs Corp. reserves the right to change products or speci
fi
cations without notice.
ELECTRICAL CHARACTERISTICS AND RECOMMENDED AC OPERATING CONDITIONS
V
CC
, V
CCQ
= +3.3V ±0.3V
AC CHARACTERISTICS
SYMBOL
7
7.5
10
UNITS
NOTE
PARAMETER
MIN
MAX
MIN
MAX
MIN
MAX
Access timefrom CLK (pos.edge)
CL = 3
t
AC(3)
5.4
5.4
6
ns
27
CL = 2
t
AC(2)
5.4
6
6
ns
Address hold time
t
AH
0.8
0.8
1
ns
Address setup time
t
AS
1.5
1.5
2
ns
CLK high-level width
t
CH
2.5
2.5
3
ns
CLK low-level width
t
CL
2.5
2.5
3
ns
Clock cycle time
CL = 3
t
CK(3)
7
7.5
8
ns
23
CL = 2
t
CK(2)
7.5
10
10
ns
23
CKE hold time
t
CKH
0.8
0.8
1
ns
CKE setup time
t
CKS
1.5
1.5
2
ns
CS#, RAS#, CAS#, WE#, DQM hold time
t
CMH
0.8
0.8
1
ns
CS#, RAS#, CAS#, WE#, DQM setup time
t
CMS
1.5
1.5
2
ns
Data-in hold time
t
DH
0.8
0.8
1
ns
Data-in setup time
t
DS
1.5
1.5
2
ns
Data-out high-impedance time
CL = 3
t
HZ(3)
5.4
5.4
6
ns
10
CL = 2
t
HZ(2)
5.4
6
6
ns
10
Data-out low-impedance time
t
LZ
1
1
1
ns
Data-out hold time (load)
t
OH
2.7
2.7
2.7
ns
Data-out hold time (no load)
t
OHN
1.8
1.8
1.8
ns
28
ACTIVE to PRECHARGE command
t
RAS
37
120,000
44
120,000
50
120,000
ns
ACTIVE to ACTIVE command period
t
RC
60
66
66
ns
ACTIVE to READ or WRITE delay
t
RCD
15
20
20
ns
Refresh period
t
REF
64
64
64
ms
AUTOREFRESH period
t
RFC
66
66
66
ns
PRECHARGE command period
t
RP
15
20
20
ns
ACTIVE bank a to ACTIVE bank b command
t
RRD
14
15
15
ns
Transition time
t
T
0.3
1.2
0.3
1.2
0.3
1.2
ns
7
WRITE recovery time
t
WR
1 CLK
+
7ns
1 CLK
+
7.5ns
1 CLK
+
7.5ns
24
14
15
15
ns
25
Exit SELF REFRESH to ACTIVE command
t
XSR
67
75
80
ns
20
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| W3DG7266V7D2 | 制造商:WEDC 制造商全稱:White Electronic Designs Corporation 功能描述:512MB - 64Mx72 SDRAM, REGISTER and SPD, w/PLL |
| W3DG7266V-D2 | 制造商:WEDC 制造商全稱:White Electronic Designs Corporation 功能描述:512MB - 64Mx72 SDRAM, REGISTER and SPD, w/PLL |
| W3DG7267V10D2 | 制造商:WEDC 制造商全稱:White Electronic Designs Corporation 功能描述:512MB - 2x32Mx72, SDRAM UNBUFFERED |
| W3DG7267V75D2 | 制造商:WEDC 制造商全稱:White Electronic Designs Corporation 功能描述:512MB - 2x32Mx72, SDRAM UNBUFFERED |
| W3DG7267V7D2 | 制造商:WEDC 制造商全稱:White Electronic Designs Corporation 功能描述:512MB - 2x32Mx72, SDRAM UNBUFFERED |
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