EBE21FE8ACFT
Serial PD Matrix for FB-DIMM
Byte No. Function described
Byte value
116
Hex value
92H
0
Number of serial PD bytes written / SPD device size / CRC coverage
1
SPD revision
Revision 1.1
11H
2
Key byte / DRAM device type
DDR2 SDRAM FB-DIMM 09H
VDD = 1.8V, VCC = 1.5V 12H
14-row, 10-column, 8-bank 45H
3
Voltage levels of this assembly
4
SDRAM addressing
5
Module physical attributes
8.2mm
24H
07H
11H
00H
01H
04H
0CH
20H
33H
3CH
42H
3CH
72H
50H
3CH
1EH
3CH
00H
B4H
F0H
FEH
01H
1EH
1EH
03H
07H
01H
6
Module Type / Thickness
FB-DIMM
2 ranks / 8bits
7
Module organization
8
Fine timebase (FTB) dividend / divisor
Medium timebase dividend
9
1
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
Medium timebase divisor
4
SDRAM minimum cycle time (tCK (min.))
SDRAM maximum cycle time (tCK (max.))
SDRAM /CAS latencies supported
3.00ns
8ns
CL = 3, 4, 5
15ns
SDRAM minimum /CAS latencies time (tCAS)
SDRAM write recovery times supported
SDRAM write recovery time (tWR)
WR = 2 to 5
15ns
SDRAM write latencies supported
WL = 2 to 8
AL = 0 to 4
15ns
SDRAM additive latencies supported
SDRAM minimum /RAS to /CAS delay (tRCD)
SDRAM minimum row active to row active delay (tRRD)
SDRAM minimum row precharge time (tRP)
SDRAM upper nibbles for tRAS and tRC
SDRAM minimum active to precharge time (tRAS)
SDRAM minimum auto-refresh to active /auto-refresh time (tRC)
SDRAM minimum refresh recovery time delay (tRFC), LSB
SDRAM minimum refresh recovery time delay (tRFC), MSB
SDRAM Internal write to read command delay (tWTR)
SDRAM Internal read to precharge command delay (tRTP)
SDRAM burst lengths supported
7.5ns
15ns
45ns
60ns
127.5ns
127.5ns
7.5ns
7.5ns
BL = 4, 8
ODT = 50, 75, 150Ω
Supported
SDRAM terminations supported
SDRAM drivers supported
SDRAM average refresh interval (tREFI) / double refresh mode bit /
high temperature self-refresh rate support indication
32
7.8µs Double/HT refresh C2H
33
34
35
36
37
38
39
40
41
Tcasemax (TC (max.)) delta / DT4R4W delta
Psi T-A SDRAM at still air
SDRAM DT0
95°C/ 0.40°C
51H
××
××
××
××
××
××
××
××
3
*
3
*
3
*
SDRAM DT2Q
3
*
SDRAM DT2P
3
*
SDRAM DT3N
3
*
SDRAM DT4R / mode bit
SDRAM DT5B
3
*
3
*
SDRAM DT7
Data Sheet E1090E30 (Ver. 3.0)
18
ELPIDA [ ELPIDA MEMORY ]
