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EBD25EC8AKFA-5 Datasheet(PDF) 6 Page - Elpida Memory

Part No. EBD25EC8AKFA-5
Description  256MB Unbuffered DDR SDRAM DIMM (32M words X72 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

EBD25EC8AKFA-5 Datasheet(HTML) 6 Page - Elpida Memory

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EBD25EC8AKFA-5
Preliminary Data Sheet E0354E30 (Ver. 3.0)
6
Byte No.
Function described
Bit7 Bit6 Bit5 Bit4 Bit3 Bit2 Bit1 Bit0 Hex value
Comments
32
Address and command setup time
before clock (tIS)
0
1
1
0
0
0
0
0
60H
0.6ns
*1
33
Address and command hold time after
clock (tIH)
0
1
1
0
0
0
0
0
60H
0.6ns
*1
34
Data input setup time before clock
(tDS)
0
1
0
0
0
0
0
0
40H
0.4ns
*1
35
Data input hold time after clock (tDH)
0
1
0
0
0
0
0
0
40H
0.4ns
*1
36 to 40
Superset information
0
0
0
0
0
0
0
0
00H
Future use
41
Active command period (tRC)
-5B
0
0
1
1
0
1
1
1
37H
55ns
*1
-5C
0
0
1
1
1
1
0
0
3CH
60ns
*1
42
Auto refresh to active/
Auto refresh command cycle (tRFC)
0
1
0
0
0
1
1
0
46H
70ns
*1
43
SDRAM tCK cycle max. (tCK max.)
0
0
1
0
0
0
0
0
20H
8ns
*1
44
Dout to DQS skew
0
0
1
0
1
0
0
0
28H
0.4ns
*1
45
Data hold skew (tQHS)
0
1
0
1
0
0
0
0
50H
0.5ns
*1
46 to 61
Superset information
0
0
0
0
0
0
0
0
00H
Future use
62
SPD Revision
0
0
0
0
0
0
0
0
00H
63
Checksum for bytes 0 to 62
-5B
0
1
1
1
0
0
0
0
70H
-5C
1
0
0
0
1
1
0
1
8DH
64 to 65
Manufacturer’s JEDEC ID code
0
1
1
1
1
1
1
1
7FH
Continuation
code
66
Manufacturer’s JEDEC ID code
1
1
1
1
1
1
1
0
FEH
Elpida Memory
67 to 71
Manufacturer’s JEDEC ID code
0
0
0
0
0
0
0
0
00H
72
Manufacturing location
×
×
×
×
×
×
×
×
××
(ASCII-8bit
code)
73
Module part number
0
1
0
0
0
1
0
1
45H
E
74
Module part number
0
1
0
0
0
0
1
0
42H
B
75
Module part number
0
1
0
0
0
1
0
0
44H
D
76
Module part number
0
0
1
1
0
0
1
0
32H
2
77
Module part number
0
0
1
1
0
1
0
1
35H
5
78
Module part number
0
1
0
0
0
1
0
1
45H
E
79
Module part number
0
1
0
0
0
0
1
1
43H
C
80
Module part number
0
0
1
1
1
0
0
0
38H
8
81
Module part number
0
1
0
0
0
0
0
1
41H
A
82
Module part number
0
1
0
0
1
0
1
1
4BH
K
83
Module part number
0
1
0
0
0
1
1
0
46H
F
84
Module part number
0
1
0
0
0
0
0
1
41H
A
85
Module part number
0
0
1
0
1
1
0
1
2DH
86
Module part number
0
0
1
1
0
1
0
1
35H
5
87
Module part number
-5B
0
1
0
0
0
0
1
0
42H
B
-5C
0
1
0
0
0
0
1
1
43H
C
88 to 90
Module part number
0
0
1
0
0
0
0
0
20H
(Space)
91
Revision code
0
0
1
1
0
0
0
0
30H
Initial
92
Revision code
0
0
1
0
0
0
0
0
20H
(Space)
93
Manufacturing date
×
×
×
×
×
×
×
×
××
Year code
(HEX)


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