HB54A2569F1U Datasheet, PDF (6/17 Pages) Elpida Memory – 256MB, 512MB Registered DDR SDRAM DIMM

HB54A2569F1U, HB54A5129F2U
Byte No. Function described
Bit7 Bit6 Bit5 Bit4 Bit3 Bit2 Bit1 Bit0 Hex value Comments
27
Minimum row precharge time (tRP) 0 1 0 1 0 0 0 0 50H
20ns
28
Minimum row active to row active
delay (tRRD)
0 0 1 1 1 1 0 0 3CH
15ns
29
Minimum /RAS to /CAS delay (tRCD) 0 1 0 1 0 0 0 0 50H
20ns
Minimum active to precharge time
30
(tRAS)
0 0 1 0 1 1 0 1 2DH
45ns
-A75B, -B75B
-10B
0
31
Module bank density
0
Address and command setup time
32
before clock (tIS)
1
-A75B, -B75B
E _-10B
1
Address and command hold time after
33
clock (tIH)
1
-A75B, -B75B
O^-10B
1
Data input setup time before clock
34
(tDS)
0
-A75B, -B75B
L^-10B
0
0
1
0
0
0
0
1
1
1
0
0
1
0
1
0
1
1
0
1
1
1
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
32H
40H
90H
B0H
90H
B0H
50H
60H
50ns
256MB
0.9ns*⁵
1.1ns*⁵
0.9ns*⁵
1.1ns*⁵
0.5ns*⁵
0.6ns*⁵
35
36 to 40
41
42
43
44
45
46 to 61
62
63
Data input hold time after clock (tDH)
-A75B, -B75B
0
1
0
1
0
0
0
0
50H
-10B
0 1 1 0 0 0 0 0 60H
Superset information
Active command period (tRC)
-A75B, -B75B
P -10B
Auto refresh to active/Auto refresh
command cycle (tRFC)
-A75B, -B75B
-10B
0 0 0 0 0 0 0 0 00H
0 1 0 0 0 0 0 1 41H
0 1 0 0 0 1 1 0 46H
0 1 0 0 1 0 1 1 4BH
0 1 0 1 0 0 0 0 50H
r _{SDRAM tCK cycle max. (tCK max.) 0 0 1 1 0 0 0 0 30H}
Dout to DQS skew
o _{-A75B, -B75B}
0 0 1 1 0 0 1 0 32H
-10B
0 0 1 1 1 1 0 0 3CH
Data hold skew (tQHS)
-A75B, -B75B
0 1 1 1 0 1 0 1 75H
d _-10B
1 0 1 0 0 0 0 0 A0H
Superset information
0 0 0 0 0 0 0 0 00H
SPD revision
u Checksum for bytes 0 to 62
HB54A2569F1U-A75B
HB54A2569F1U-B75B
0 0 0 0 0 0 0 0 00H
1 1 0 0 1 0 1 0 CAH
1 1 1 1 1 0 1 0 FAH
HB54A2569F1U-10B
1 0 1 1 1 1 1 1 BFH
c _{HB54A5129F2U-A75B}
1 1 0 0 1 0 1 1 CBH
HB54A5129F2U-B75B
1 1 1 1 1 0 1 1 FBH
t ^{HB54A5129F2U-10B}
1 1 0 0 0 0 0 0 C0H
0.5ns*⁵
0.6ns*⁵
Future use
65ns*⁵
70ns*⁵
75ns*⁵
80ns*⁵
12ns*⁵
500ps*⁵
600ps*⁵
750ps*⁵
1000ps*⁵
Future use
Initial
202
250
191
203
251
192
64
Manufacturer’s JEDEC ID code
0 0 0 0 0 1 1 1 07H
HITACHI
65 to 71
72
Manufacturer’s JEDEC ID code
Manufacturing location
0 0 0 0 0 0 0 0 00H
× × × × × × × × ××
*² (ASCII-8bit
code)
Data Sheet E0206H30 (Ver. 3.0)
6