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EBD25UC8AKFA-5 Datasheet(PDF) 14 Page - Elpida Memory

Part No. EBD25UC8AKFA-5
Description  256MB Unbuffered DDR SDRAM DIMM (32M words X 64 bits, 1 Rank)
Download  19 Pages
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Manufacturer  ELPIDA [Elpida Memory]
Direct Link  http://www.elpida.com/en
Logo ELPIDA - Elpida Memory

EBD25UC8AKFA-5 Datasheet(HTML) 14 Page - Elpida Memory

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EBD25UC8AKFA-5
Preliminary Data Sheet E0353E30 (Ver. 3.0)
14
Timing Parameter Measured in Clock Cycle for Unbuffered DIMM
Number of clock cycle
tCK
5ns
Parameter
Symbol
min.
max.
Unit
Write to pre-charge command delay (same bank)
tWPD
4 + BL/2
tCK
Read to pre-charge command delay (same bank)
tRPD
BL/2
tCK
Write to read command delay (to input all data)
tWRD
2 + BL/2
tCK
Burst stop command to write command delay
tBSTW
3
tCK
Burst stop command to DQ High-Z
tBSTZ
3
3
tCK
Read command to write command delay
(to output all data)
tRWD
3 + BL/2
tCK
Pre-charge command to High-Z
tHZP
3
3
tCK
Write command to data in latency
tWCD
1
1
tCK
Write recovery
tWR
3
tCK
DM to data in latency
tDMD
0
0
tCK
Mode register set command cycle time
tMRD
2
tCK
Self refresh exit to non-read command
tSNR
15
tCK
Self refresh exit to read command
tSRD
200
tCK
Power down entry
tPDEN
1
1
tCK
Power down exit to command input
tPDEX
1
tCK


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