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参数资料
| 型号： | WV3EG64M64ETSU403D4IMG |
| 厂商： | WHITE ELECTRONIC DESIGNS CORP |
| 元件分类： | DRAM |
| 英文描述： | 64M X 64 DDR DRAM MODULE, 0.65 ns, ZMA200 |
| 封装： | ROHS COMPLIANT, SODIMM-200 |
| 文件页数： | 11/12页 |
| 文件大小： | 177K |
| 代理商： | WV3EG64M64ETSU403D4IMG |
WV3EG64M64ETSU-D4
8
White Electronic Designs Corporation (602) 437-1520 www.wedc.com
White Electronic Designs
March 2006
Rev. 0
PRELIMINARY
DDR SDRAM COMPONENT ELECTRICAL CHARACTERISTICS AND RECOMMENDED AC
OPERATING CONDITIONS
0°C ≤ TA ≤ +70°C;
AC Characteristics
403
335
Units
Parameter
Symbol
Min
Max
Min
Max
Row Cycle Time
tRC
55
60
tCK
Refresh row cycle time
tRFC
70
72
ps
Row active
tRAS
40
70K
42
70K
ps
RAS# to CAS# delay
tRCD
15
18
tCK
Row percharge time
tRP
15
18
ns
Row active to row active delay
tRRD
10
12
ns
Write recovery time
tWR
15
ns
Last data in to READ command
tWTR
21
ns
Clock cycle time
CL = 2.5
tCK
612612
ns
CL = 3
5
10
ns
CK high-level width
tCH
0.45
0.55
0.45
0.55
tCK
CK low-level width
tCL
0.45
0.55
0.45
0.55
tCK
Access window of DQS from CK/CK#
tDQSCK
-0.55
+0.55
-0.6
+0.6
ns
Access window of DQs from CK/CK#
tAC
-0.65
+0.65
-0.7
+0.7
ns
DQS-DQ skew, DQS to last DQ valid, per group, per
access
tDQSQ
-
0.4
-
0.4
ns
Read preamble
tRPRE
0.9
1.1
0.9
1.1
tCK
Read postamble
tRPST
0.4
0.6
0.4
0.6
tCK
CK to valid DQS-in
tDQSS
0.72
1.28
0.75
1.25
tCK
DQS-in setup time
tWPRES
00
ns
DQS-in hold time
tWPRE
0.25
tCK
DQS falling edge to CK rising-setup time
tDSS
0.2
tCK
DQS falling edge to CK rising-hold time
tDSH
0.2
tCK
Notes:
Industrial grade modules are specied to a DRAM tCASE of 85°C and -40°C
Continued on next page
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相关代理商/技术参数 |
参数描述 |
|---|---|
| WV3EG64M64ETSU-D3 | 制造商:WEDC 制造商全称:White Electronic Designs Corporation 功能描述:512MB - 64Mx64 DDR SDRAM UNBUFFERED |
| WV3EG64M64ETSU-D4 | 制造商:WEDC 制造商全称:White Electronic Designs Corporation 功能描述:512MB - 64Mx64 DDR SDRAM, UNBUFFERED, SO-DIMM |
| 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 |
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