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参数资料
| 型号： | WV3EG64M72ETSU335D3M |
| 厂商： | WHITE ELECTRONIC DESIGNS CORP |
| 元件分类： | DRAM |
| 英文描述： | 64M X 72 DDR DRAM MODULE, DMA184 |
| 封装： | DIMM-184 |
| 文件页数： | 7/10页 |
| 文件大小： | 230K |
| 代理商： | WV3EG64M72ETSU335D3M |
White Electronic Designs
6
White Electronic Designs Corporation (602) 437-1520 www.wedc.com
Octobert 2005
Rev. 0
PRELIMINARY
WV3EG64M72ETSU-D3
DDR SDRAM COMPONENT ELECTRICAL CHARACTERISTICS AND
RECOMMENDED AC OPERATING CONDITIONS
Parameter
Symbol
335
Unit
Min
Max
Row cycle time
tRC
60
ns
Refresh row cycle time
tRFC
72
ns
Row active time
tRAS
42
70K
ns
RAS to CAS delay
tRCD
18
ns
Row precharge time
tRP
18
ns
Row active to Row active delay
tRRD
12
ns
Write recovery time
tWR
15
ns
Last data into Read command
tWTR
1tCK
Clock cycle time
CL = 2.5
tCK
612
ns
Clock high level width
tCH
0.45
0.55
tCK
Clock low level width
tCL
0.55
tCK
DQS-out access time from CK/CK
tDQSCK
-0.6
+0.6
ns
Output data access time from CK/CK
tAC
-0.7
+0.7
ns
Data strobe edge to ouput data edge
tDQSQ
—
0.45
ns
Read Preamble
tRPRE
0.9
1.1
tCK
Read Postamble
tRPST
0.4
0.6
tCK
CK to valid DQS-in
tDQSS
0.75
1.25
tCK
DQS-in setup time
tWPRES
0ns
DQS-in hold time
tWPRE
0.25
tCK
DQS falling edge to CK rising-setup time
tDSS
0.2
tCK
DQS falling edge from CK rising-hold time
tDSH
0.2
tCK
DQS-in high level width
tDQSH
0.35
tCK
DQS-in low level width
tDQSL
0.35
tCK
Address and Control Input setup time (fast)
tISf
0.75
ns
Address and Control Input hold time (fast)
tIHf
0.75
ns
Address and Control Input setup time (slow)
tIS
0.8
ns
Address and Control Input hold time (slow)
tIHS
0.8
ns
Data-out high impedence time from CK/CK
tHZ
-0.7
+0.7
ns
Data-out low impedence time from CK/CK
tLZ
-0.7
+0.7
ns
Note: These specications apply to modules built with Samsung components only.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| WV3EG64M72ETSU-D3 | 制造商:WEDC 制造商全称:White Electronic Designs Corporation 功能描述:512MB - 64Mx72 DDR SDRAM UNBUFFERED |
| WV3EG72M64ETSU335D3MG | 制造商:WEDC 制造商全称:White Electronic Designs Corporation 功能描述:512MB - 64Mx72 DDR SDRAM UNBUFFERED |
| WV3EG72M64ETSU335D3SG | 制造商:WEDC 制造商全称:White Electronic Designs Corporation 功能描述:512MB - 64Mx72 DDR SDRAM UNBUFFERED |
| WV3H2256M72AER403D6IMG | 制造商:WEDC 制造商全称:White Electronic Designs Corporation 功能描述:4GB - 2x256Mx72 DDR2 SDRAM RDIMM, w/PLL |
| WV3H2256M72AER403D6ISG | 制造商:WEDC 制造商全称:White Electronic Designs Corporation 功能描述:4GB - 2x256Mx72 DDR2 SDRAM RDIMM, w/PLL |
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