HB54A1288KM Datasheet, PDF (6/16 Pages) Elpida Memory – 128MB DDR SDRAM S.O. DIMM

HB54A1288KM
Byte No. Function described
Bit7 Bit6 Bit5 Bit4 Bit3 Bit2 Bit1 Bit0 Hex value Comments
28
Minimum row active to row active
delay (tRRD)
0 0 1 1 1 1 0 0 3C
29
Minimum /RAS to /CAS delay (tRCD) 0 1 0 1 0 0 0 0 50
15ns
20ns
Minimum active to precharge time
30
(tRAS)
0 0 1 0 1 1 0 1 2D
-A75B/B75B
45ns
-10B
0 0 1 1 0 0 1 0 32
31
Module bank density
0 0 1 0 0 0 0 0 20
Address and command setup time
32
before clock (tIS)
1 0 1 1 0 0 0 0 B0
-A75B/B75B
-10B
1 1 0 0 0 0 0 0 C0
E _{Address and command hold time after}
33
clock (tIH)
1 0 1 1 0 0 0 0 B0
-A75B/B75B
-10B
1 1 0 0 0 0 0 0 C0
O_{Data input setup time before clock}
34
(tDS)
0 1 0 1 0 0 0 0 50
-A75B/B75B
-10B
0 1 1 0 0 0 0 0 60
L ³⁵
Data input hold time after clock (tDH)
-A75B/B75B
0
1
0
1
0
0
0
0
50
-10B
0 1 1 0 0 0 0 0 60
36 to 40 Superset information
0 0 0 0 0 0 0 0 00
41
Active command period (tRC)
-A75B/B75B
0 1 0 0 0 0 0 1 41
-10B
0 1 0 0 0 1 1 0 46
P _{Auto refresh to active/}
42
Auto refresh command cycle (tRFC) 0 1 0 0 1 0 1 1 4B
-A75B/B75B
-10B
0 1 0 1 0 0 0 0 50
r ₄₃
SDRAM tCK cycle max. (tCK max.) 0 0 1 1 1 1 0 0 3C
44
Dout to DQS skew
-A75B/B75B
0 0 1 1 0 0 1 0 32
o _-10B
0 0 1 1 1 1 0 0 3C
45
Data hold skew (tQHS)
-A75B/B75B
0 1 1 1 0 1 0 1 75
d ^-10B
1 0 1 0 0 0 0 0 A0
46 to 61 Superset information
0 0 0 0 0 0 0 0 00
62
SPD revision
u ⁶³
Checksum for bytes 0 to 62
-A75B
-B75B
0 0 0 0 0 0 0 0 00
0 0 0 1 1 0 1 1 1B
0 1 0 0 1 0 1 1 4B
-10B
1 1 1 1 1 0 1 0 FA
c ⁶⁴
Manufacturer’s JEDEC ID code
0 0 0 0 0 1 1 1 07
65 to 71 Manufacturer’s JEDEC ID code
0 0 0 0 0 0 0 0 00
t ⁷²
Manufacturing location
× × × × × × × × ××
50ns
1 bank
128MB
1.1ns*⁵
1.2ns*⁵
1.1ns*⁵
1.2ns*⁵
0.5ns*⁵
0.6ns*⁵
0.5ns*⁵
0.6ns*⁵
Future use
65ns*⁵
70ns*⁵
75ns*⁵
80ns*⁵
15ns*⁵
500ps*⁵
600ps*⁵
750ps*⁵
1000ps*⁵
Future use
Initial
27
75
250
HITACHI
*² (ASCII-8bit
code)
73
Module part number
0 1 0 0 1 0 0 0 48
H
74
Module part number
0 1 0 0 0 0 1 0 42
B
75
Module part number
0 0 1 1 0 1 0 1 35
5
Preliminary Data Sheet E0190H10 (Ver. 1.0)
6