EBE41AF4A1QB
Byte No. Function described
Maximum data access time (tAC) from
Bit7 Bit6 Bit5 Bit4 Bit3 Bit2 Bit1 Bit0 Hex value Comments
clock at CL = X − 2
0
1
0
1
0
0
0
0
50H
0.5ns*1
26
-8G (CL = 4)
-6E (CL = 3)
0
0
1
0
1
1
0
1
0
1
0
1
0
0
0
0
60H
3CH
0.6ns*1
15ns
27
28
29
30
31
Minimum row precharge time (tRP)
Minimum row active to row active delay
(tRRD)
0
0
0
0
0
0
0
0
0
1
1
0
1
1
0
0
1
1
1
0
1
1
1
0
1
0
0
1
0
0
1
0
1EH
3CH
2DH
02H
7.5ns
15ns
45ns
2GB
Minimum /RAS to /CAS delay (tRCD)
Minimum active to precharge time
(tRAS)
Module rank density
Address and command setup time
before clock (tIS)
-8G
0
0
0
0
0
0
0
1
1
1
0
0
0
0
0
1
0
1
1
0
0
1
0
1
17H
20H
25H
0.17ns*1
0.20ns*1
0.25ns*1
32
33
-6E
Address and command hold time after
clock (tIH)
-8G
-6E
0
0
0
0
0
0
0
0
1
0
0
0
0
0
1
1
0
0
0
0
1
1
0
0
1
0
0
1
1
1
0
0
27H
05H
10H
12H
0.27ns*1
0.05ns*1
0.10ns*1
0.12ns*1
Data input setup time before clock (tDS)
-8G
34
35
-6E
Data input hold time after clock (tDH)
-8G
-6E
0
0
0
0
0
1
1
1
0
1
1
1
1
0
1
0
17H
3CH
0.17ns*1
15ns*1
36
37
Write recovery time (tWR)
Internal write to read command delay
(tWTR)
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
0
1EH
1EH
7.5ns*1
Internal read to precharge command
delay (tRTP)
38
7.5ns*1
TBD
39
40
41
Memory analysis probe characteristics
Extension of Byte 41 and 42
0
0
0
0
0
0
0
0
1
0
0
1
0
0
1
0
1
1
0
1
0
0
0
0
00H
06H
3CH
Active command period (tRC)
60ns*1
Auto refresh to active/
Auto refresh command cycle (tRFC)
42
43
0
1
0
0
0
1
0
0
0
0
1
0
0
0
0
1
0
1
1
1
1
0
0
1
1
1
0
1
0
1
1
0
0
0
1
1
0
0
0
0
7FH
80H
14H
18H
1EH
127.5ns*1
8ns*1
SDRAM tCK cycle max. (tCK max.)
Dout to DQS skew
-8G
0.20ns*1
0.24ns*1
0.30ns*1
44
45
-6E
Data hold skew (tQHS)
-8G
-6E
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
1
0
1
0
0
0
1
0
0
1
1
0
1
0
1
0
0
22H
0FH
00H
12H
0.34ns*1
46
PLL relock time
15µs
47 to 61
62
SPD Revision
Rev. 1.2
Checksum for bytes 0 to 62
-8G
63
1
0
1
0
1
1
0
0
ACH
-6E
1
0
1
0
1
1
1
0
1
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
1
1
1
0
0
1
0
0
E2H
7FH
FEH
00H
64 to 65 Manufacturer’s JEDEC ID code
66 Manufacturer’s JEDEC ID code
Continuation code
Elpida Memory
67 to 71 Manufacturer’s JEDEC ID code
Preliminary Data Sheet E1246E10 (Ver. 1.0)
6
ELPIDA [ ELPIDA MEMORY ]
