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參數(shù)資料
| 型號： | W3EG2256M72ASSR265BJD3SG |
| 廠商： | MICROSEMI CORP-PMG MICROELECTRONICS |
| 元件分類： | DRAM |
| 英文描述： | 512M X 72 DDR DRAM MODULE, 0.75 ns, DMA184 |
| 封裝： | ROHS COMPLIANT, DIMM-184 |
| 文件頁數(shù)： | 13/14頁 |
| 文件大?。?/td> | 309K |
| 代理商： | W3EG2256M72ASSR265BJD3SG |
W3EG2256M72ASSR-JD3
-AJD3
-BJD3
8
White Electronic Designs
March, 2007
Rev. 4
White Electronic Designs Corporation (602) 437-1520 www.whiteedc.com
DDR SDRAM COMPONENT ELECTRICAL CHARACTERISTICS AND
RECOMMENDED AC OPERATING CONDITIONS (continued)
AC Characteristics
335
262
263/265
202
Units
Notes
Parameter
Symbol
Min
Max
Min
Max
Min
Max
Min
Max
ACTIVE to ACTIVE/AUTO REFRESH
command period
tRC
60
65
70
ns
AUTO REFRESH command period
tRFC
120
ns
21
ACTIVE to READ or WRITE delay
tRCD
18
20
ns
PRECHARGE command period
tRP
18
20
ns
DQS read preamble
tRPRE
0.9
1.1
0.9
1.1
0.9
1.1
0.9
1.1
tCK
19
DQS read postamble
tRPST
0.4
0.6
0.4
0.6
0.4
0.6
0.4
0.6
tCK
ACTIVE bank a to ACTIVE bank b command
tRRD
12
15
ns
DQS write preamble
tWPRE
0.25
tCK
DQS write preamble setup time
tWPRES
0000
ns
10,11
DQS write postamble
tWPST
0.4
0.6
0.4
0.6
0.4
0.6
0.4
0.6
tCK
9
Write recovery time
tWR
15
ns
Internal WRITE to READ command delay
tWTR
1111
tCK
Data valid output window
NA
tQH-tDQSQ
ns
13
REFRESH to REFRESH command interval
tREFC
70.3
μs12
Average periodic refresh interval
tREFI
7.8
μs12
Terminating voltage delay to VCC
tVTD
0000
ns
Exit SELF REFRESH to non-READ command
tXSNR
126
75
ns
Exit SELF REFRESH to READ command
tXSRD
200
tCK
Note: These parameters serve to support
SAMSUNG components based modules
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| W3EG2256M72ASSR265JD3XG | 制造商:WEDC 制造商全稱:White Electronic Designs Corporation 功能描述:4GB - 2x256Mx72 DDR SDRAM REGISTERED ECC, w/PLL |
| W3EG2256M72ASSR-AJD3 | 制造商:WEDC 制造商全稱:White Electronic Designs Corporation 功能描述:4GB - 2x256Mx72 DDR SDRAM REGISTERED ECC, w/PLL |
| W3EG2256M72ASSR-JD3 | 制造商:WEDC 制造商全稱:White Electronic Designs Corporation 功能描述:4GB - 2x256Mx72 DDR SDRAM REGISTERED ECC, w/PLL |
| W3EG264M64EFSU262D4-X | 制造商:WEDC 制造商全稱:White Electronic Designs Corporation 功能描述:1GB - 2x64Mx64 DDR SDRAM, UNBUFFERED, FBGA |
| W3EG264M64EFSU265D4-X | 制造商:WEDC 制造商全稱:White Electronic Designs Corporation 功能描述:1GB - 2x64Mx64 DDR SDRAM, UNBUFFERED, FBGA |
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