參數(shù)資料
型號: EBD26UC6AKSA-E
廠商: Elpida Memory, Inc.
英文描述: Single Pole Normally Open: 1-Form-A
中文描述: 256MB的DDR SDRAM的SO - DIMM插槽(32M的字× 64位,2個(gè)等級)
文件頁數(shù): 14/19頁
文件大?。?/td> 204K
代理商: EBD26UC6AKSA-E
EBD26UC6AKSA
Preliminary Data Sheet E0307E20 (Ver. 2.0)
14
Timing Parameter Measured in Clock Cycle for unbuffered DIMM
Number of clock cycle
tCK
6ns
7.5ns
Parameter
Symbol
min.
max.
min.
max.
Write to pre-charge command delay (same bank)
tWPD
4 + BL/2
3 + BL/2
Read to pre-charge command delay (same bank)
tRPD
BL/2
BL/2
Write to read command delay (to input all data)
tWRD
2 + BL/2
2 + BL/2
Burst stop command to write command delay
(CL = 2)
tBSTW
2
2
(CL = 2.5)
tBSTW
3
3
Burst stop command to DQ High-Z
(CL = 2)
tBSTZ
2
2
2
2
(CL = 2.5)
tBSTZ
2.5
2.5
2.5
2.5
Read command to write command delay
(to output all data)
(CL = 2)
(CL = 2.5)
tRWD
2 + BL/2
2 + BL/2
tRWD
3 + BL/2
3 + BL/2
Pre-charge command to High-Z
(CL = 2)
tHZP
2
2
2
2
(CL = 2.5)
tHZP
2.5
2.5
2.5
2.5
Write command to data in latency
tWCD
1
1
1
1
Write recovery
tWR
3
2
DM to data in latency
tDMD
0
0
0
0
Mode register set command cycle time
tMRD
2
2
Self refresh exit to non-read command
tSNR
12
10
Self refresh exit to read command
tSRD
200
200
Power down entry
tPDEN
1
1
1
1
Power down exit to command input
tPDEX
1
1
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EBD51RC4AKFA-7A 512MB Registered DDR SDRAM DIMM (64M words X 72 bits, 1 Rank)
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