EBE21UE8ABDA
Byte No. Function described
Address and command setup time
before clock (tIS)
Bit7 Bit6 Bit5 Bit4 Bit3 Bit2 Bit1 Bit0 Hex value Comments
32
0
0
0
0
0
0
1
1
1
0
0
0
0
0
0
0
1
1
0
0
1
0
1
1
20H
25H
27H
0.20ns*1
0.25ns*1
0.27ns*1
-6E
-5C
Address and command hold time
33
after clock (tIH)
-6E
-5C
0
0
0
0
1
0
1
1
0
0
1
0
1
0
1
0
37H
10H
0.37ns*1
0.10ns*1
Data input setup time before clock
(tDS)
34
35
Data input hold time after clock (tDH)
-6E
0
0
0
1
0
1
1
1
17H
0.17ns*1
-5C
0
0
0
0
1
1
0
1
0
1
0
1
1
0
0
0
22H
3CH
0.22ns*1
15ns*1
36
37
Write recovery time (tWR)
Internal write to read command delay
(tWTR)
0
0
0
0
0
0
0
0
0
1
1
0
1
1
0
1
1
0
1
1
0
0
0
0
1EH
1EH
00H
7.5ns*1
7.5ns*1
TBD
Internal read to precharge command
delay (tRTP)
38
39
Memory analysis probe
characteristics
40
41
Extension of Byte 41 and 42
Active command period (tRC)
0
0
0
0
0
1
0
1
0
1
1
1
1
0
0
0
06H
3CH
60ns*1
Auto refresh to active/
Auto refresh command cycle (tRFC)
42
43
44
0
1
0
0
0
1
0
0
0
0
1
0
0
0
1
1
0
1
1
0
1
0
1
1
0
1
0
0
1
0
1
0
0
1
1
1
0
0
0
0
7FH
80H
18H
1EH
22H
127.5ns*1
8ns*1
SDRAM tCK cycle max. (tCK max.)
Dout to DQS skew
-6E
0.24ns*1
0.30ns*1
0.34ns*1
-5C
Data hold skew (tQHS)
-6E
45
-5C
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
1
1
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
28H
00H
00H
12H
0.40ns*1
46
PLL relock time
Undefined
47 to 61
62
SPD Revision
Rev. 1.2
Checksum for bytes 0 to 62
-6E
63
0
0
0
0
1
1
1
1
1
0
0
1
0
1
1
1
0
1
0
0
1
1
1
1
25H
69H
7FH
-5C
Continuation
code
64 to 65
Manufacturer’s JEDEC ID code
66
Manufacturer’s JEDEC ID code
Manufacturer’s JEDEC ID code
Manufacturing location
Module part number
1
0
×
0
0
0
0
0
0
0
0
1
0
×
1
1
1
0
0
1
1
0
1
0
×
0
0
0
1
1
0
0
1
1
0
×
0
0
0
1
1
1
0
1
1
0
×
0
0
0
0
0
0
0
1
1
0
×
1
0
1
0
0
1
1
0
1
0
×
0
1
0
1
0
0
0
0
0
0
×
1
0
1
0
1
1
1
0
FEH
00H
××
Elpida Memory
67 to 71
72
(ASCII-8bit code)
73
45H
42H
45H
32H
31H
55H
45H
38H
E
B
E
2
74
Module part number
75
Module part number
76
Module part number
77
Module part number
1
78
Module part number
U
E
8
79
Module part number
80
Module part number
Preliminary Data Sheet E0938E10 (Ver. 1.0)
6
ELPIDA [ ELPIDA MEMORY ]
