EBD21RD4ABNA-10 データシートの表示（PDF） - Elpida Memory, Inc
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EBD21RD4ABNA-10 Datasheet PDF : 19 Pages
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EBD21RD4ABNA
Byte No.
30
Function described
Minimum active to precharge time
(tRAS)
-7A, -7B
-10
Bit7 Bit6 Bit5 Bit4 Bit3 Bit2 Bit1 Bit0 Hex value
0 0 1 0 1 1 0 1 2DH
0 0 1 1 0 0 1 0 32H
31
Module bank density
0 0 0 0 0 0 0 1 01H
Address and command setup time
32
before clock (tIS)
1 0 0 1 0 0 0 0 90H
-7A, -7B
-10
1 0 1 1 0 0 0 0 B0H
Address and command hold time after
33
clock (tIH)
1 0 0 1 0 0 0 0 90H
-7A, -7B
-10
1 0 1 1 0 0 0 0 B0H
Data input setup time before clock
34
(tDS)
0 1 0 1 0 0 0 0 50H
-7A, -7B
-10
0 1 1 0 0 0 0 0 60H
35
Data input hold time after clock (tDH)
-7A, -7B
0
1
0
1
0
0
0
0
50H
-10
0 1 1 0 0 0 0 0 60H
36 to 40 Superset information
0 0 0 0 0 0 0 0 00H
41
Active command period (tRC)
-7A, -7B
0 1 0 0 0 0 1 1 43H
-10
0 1 0 0 0 1 1 0 46H
Auto refresh to active/
42
Auto refresh command cycle (tRFC) 0 1 0 0 1 0 1 1 4BH
-7A, -7B
-10
0 1 0 1 0 0 0 0 50H
43
SDRAM tCK cycle max. (tCK max.) 0 0 1 1 0 0 0 0 30H
44
Dout to DQS skew
-7A, -7B
0 0 1 1 0 0 1 0 32H
-10
0 0 1 1 1 1 0 0 3CH
45
Data hold skew (tQHS)
-7A, -7B
0 1 1 1 0 1 0 1 75H
-10
1 0 1 0 0 0 0 0 A0H
46 to 61 Superset information
0 0 0 0 0 0 0 0 00H
62
SPD revision
63
Checksum for bytes 0 to 62
-7A
-7B
0 0 0 0 0 0 0 0 00H
1 0 0 0 1 1 0 1 8DH
1 0 1 1 1 0 0 0 B8H
-10
1 0 0 1 1 0 1 1 9BH
64
Manufacturer’s JEDEC ID code
0 1 1 1 1 1 1 1 7FH
65
Manufacturer’s JEDEC ID code
0 1 1 1 1 1 1 1 7FH
66
Manufacturer’s JEDEC ID code
1 1 1 1 1 1 1 0 FEH
67 to 71 Manufacturer’s JEDEC ID code
0 0 0 0 0 0 0 0 00H
72
Manufacturing location
× × × × × × × × ××
73
Module part number
74
Module part number
75
Module part number
76
Module part number
0 1 0 0 0 1 0 1 45H
0 1 0 0 0 0 1 0 42H
0 1 0 0 0 1 0 0 44H
0 0 1 1 0 0 1 0 32H
Comments
45ns
50ns
2 banks
1GB
0.9ns*3
1.1ns*3
0.9ns*3
1.1ns*3
0.5ns*3
0.6ns*3
0.5ns*3
0.6ns*3
Future use
67.5ns*3
70ns*3
75ns*3
80ns*3
12ns*3
500ps*3
600ps*3
750ps*3
1000ps*3
Future use
Initial
141
184
155
Elpida Memory
*2 (ASCII-8bit
code)
E
B
D
2
Preliminary Data Sheet E0273E20 (Ver. 2.0)
6
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