HB54R1G9F2-B75B Datasheet, PDF (6/16 Pages) Elpida Memory – 1GB Registered DDR SDRAM DIMM

HB54R1G9F2-B75B/10B
Byte No. Function described
Bit7 Bit6 Bit5 Bit4 Bit3 Bit2 Bit1 Bit0 Hex value Comments
Minimum active to precharge time
30
(tRAS)
0 0 1 0 1 1 0 1 2D
-B75B
45ns
-10B
0 0 1 1 0 0 1 0 32
50ns
31
Module rank density
1 0 0 0 0 0 0 0 80
2 ranks
512MB
32
33
E₃₄
O₃₅
L ^{36 to 40}
Address and command setup time
before clock (tIS)
1
-B75B
-10B
1
Address and command hold time after
clock (tIH)
1
-B75B
-10B
1
Data input setup time before clock
(tDS)
0
-B75B
-10B
0
Data input hold time after clock (tDH)
-B75B
0
-10B
0
Superset information
0
0
0
0
0
1
1
1
1
0
0
1
0
1
0
1
0
1
0
1
1
1
1
1
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
90
B0
90
B0
50
60
50
60
00
0.9ns*⁵
1.1ns*⁵
0.9ns*⁵
1.1ns*⁵
0.5ns*⁵
0.6ns*⁵
0.5ns*⁵
0.6ns*⁵
Future use
41
42
43
44
45
46 to 61
62
63
64
65 to 71
72
73
74
75
Active command period (tRC)
-B75B
0 1 0 0 0 0 0 1 41
-10B
0 1 0 0 0 1 1 0 46
Auto refresh to active/
Auto refresh command cycle (tRFC) 0 1 0 0 1 0 1 1 4B
-B75B
P _-10B
0 1 0 1 0 0 0 0 50
SDRAM tCK cycle max. (tCK max.) 0 0 1 1 0 0 0 0 30
Dout to DQS skew
-B75B
0 0 1 1 0 0 1 0 32
r _-10B
0 0 1 1 1 1 0 0 3C
Data hold skew (tQHS)
-B75B
0 1 1 1 0 1 0 1 75
o _-10B
1 0 1 0 0 0 0 0 A0
Superset information
0 0 0 0 0 0 0 0 00
SPD revision
0 0 0 0 0 0 0 0 00
d Checksum for bytes 0 to 62
- B75B
0 0 1 1 0 1 0 0 34
-10B
1 1 1 1 1 0 0 1 F9
Manufacturer’s JEDEC ID code
0 0 0 0 0 1 1 1 07
u _{Manufacturer’s JEDEC ID code}
0 0 0 0 0 0 0 0 00
Manufacturing location
× × × × × × × × ××
c ^{Module part number}
Module part number
t ^{Module part number}
0 1 0 0 1 0 0 0 48
0 1 0 0 0 0 1 0 42
0 0 1 1 0 1 0 1 35
65ns*⁵
70ns*⁵
75ns*⁵
80ns*⁵
12ns*⁵
500ps*⁵
600ps*⁵
750ps*⁵
1000ps*⁵
Future use
Initial
52
249
HITACHI
*² (ASCII-8bit
code)
H
B
5
76
Module part number
0 0 1 1 0 1 0 0 34
4
77
Module part number
0 1 0 1 0 0 1 0 52
R
78
Module part number
0 0 1 1 0 0 0 1 31
1
79
Module part number
0 1 0 0 0 1 1 1 47
G
Data Sheet E0089H50 (Ver. 5.0)
6