512MB, 1GB, 2GB (x72, ECC, SR) 240-Pin DDR2 SDRAM RDIMM
Se ria l Pre se n ce -De t e ct
Ta b le 19:
Se ria l Pre se n ce -De t e ct Ma t rix
512MB1
1GB
2GB
Byt e
De scrip t io n
En t ry (Ve rsio n )
0
1
2
3
4
5
6
7
8
9
128
80
08
08
0D
0B
60
48
00
05
80
08
08
0E
0B
60
48
00
05
80
08
08
0E
0B
60
48
00
05
Number of SPD bytes used by Micron
Total number of bytes in SPD device
Fundamental memory type
256
DDR2 SDRAM
13, 14
Number of row addresses on SDRAM
Number of column addresses on SDRAM
DIMM height and module ranks
Module data width
10
30mm, single rank
72
0
Reserved
SSTL 1.8V
Module voltage interface levels
SDRAM cycle time, tCK
(CL = MAX value, see byte 18)
-80E
-800
-667
-53E
-40E
–
–
–
3D
50
25
25
30
3D
50
25
25
30
3D
50
SDRAM access from clock,tAC
(CL = MAX value, see byte 18)
10
11
-80E/-800
-667
–
–
50
60
40
45
50
60
40
45
50
60
-53E
-40E
ECC
ECC and parity
02
06
02
06
02
06
Module configuration type
12
13
14
15
16
17
18
7.81µs/SELF
82
04
04
00
0C
04
82
04
04
00
0C
04
82
04
04
00
0C
08
Refresh rate/type
4
4
SDRAM device width (primary SDRAM)
Error-checking SDRAM data width
Reserved
0
4, 8
4 or 8
Burst lengths supported
Number of banks on SDRAM device
CAS latencies supported
-80E (5, 4)
-800 (6, 5, 4)
-667 (5, 4, 3)
-53E/-40E (4, 3)
–
–
–
30
70
38
18
30
70
38
18
18
19
20
01
01
01
01
01
01
Module thickness
DDR2 DIMM type
Registered
DIMM
21
22
1 PLL, 2 Reg
05
05
05
SDRAM module attributes
-80E/-800/-667
-53E/-40E
–
01
03
01
03
01
SDRAM device attributes: weak driver
(01), or weak driver and 50Ω ODT (03)
SDRAM cycle time, tCK, MAX CL - 1
23
24
-80E/-667
-800
-53E/-40E
–
–
50
3D
30
50
3D
30
50
t
-80E/-800
-667
–
–
50
60
40
45
50
60
40
45
50
60
SDRAM access from CK, AC, MAX CL - 1
-53E
-40E
SDRAM cycle time, tCK, MAX CL - 2
25
26
-80E/-800
-667
-53E/-40E
–
–
00
3D/00
50
00
3D/00
50
00
t
-80E/-800
-667
–
–
40/00
45
40/00
45
SDRAM access from CK, AC, MAX CL - 2
-53E/-40E
00
00
00
PDF: 09005aef80e5e752/Source: 09005aef80e5e626
HTF18C64_128_256x72.fm - Rev. E 3/07 EN
Micron Technology, Inc., reserves the right to change products or specifications without notice.
©2003 Micron Technology, Inc. All rights reserved.
15
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