256MB, 512MB, 1GB, 2GB (x64, DR)
184-PIN DDR SDRAM UDIMM
Ta b le 22: Se ria l Pre se n ce -De t e ct Ma t rix (256MB, 512MB, a n d 1GB) (Co n t in u e d )
“1”/“0”: Serial Data, “driven to HIGH”/“driven to LOW”; notes appear on page 31
BYTE
DESCRIPTION
ENTRY (VERSION) MT16VDDT3264A MT16VDDT6464A MT16VDDT12864A
28
12ns (-335)
15ns (-262/-26A/-265)
30
3C
30
3C
30
3C
Minimum Row Active to Row Active,
tRRD
Minimum Ras# to CAS# Delay, tRCD
(see note 4)
29
30
18ns (-335)
15ns (-262)
20ns (-26A/-265)
48
3C
50
48
3C
50
48
3C
50
t
42ns (-335)
45ns (-262/-26A/-265)
2A
2D
2A
2D
2A
2D
Minimum RAS# Pulse Width, RAS,
(see note 2)
31
32
128MB, 256MB,
512MB
20
40
80
Module Rank Density
0.8ns (-335)
1.0ns (-262-26A/-265)
80
A0
80
A0
80
A0
Address and Command Setup Time,
tIS, (see note 3)
33
34
35
0.8ns (-335)
1.0ns (-262/-26A/-265)
80
A0
80
A0
80
A0
Address and Command Hold Time,
tIH, (see note 3)
Data/Data Mask Input Setup Time,
tDS
0.45ns (-335)
0.5ns (-262/-26A/-265)
45
50
45
50
45
50
0.45ns (-335)
0.5ns (-262/-26A/-265)
45
50
45
50
45
50
Data/Data Mask Input
t
Hold Time, DH
36-40
41
00
00
00
Reserved
Min Active Auto Refresh Time, tRC
60ns (-335/-262)
65ns (-26A/-265)
3C
41
3C
41
3C
41
42
43
44
45
72ns (-335)
75ns (-262/-26A/-265)
48
4B
48
4B
48
4B
Minimum Auto Refresh to Active/
t
Auto Refresh Command Period, RFC
SDRAM Device Max Cycle Time,
tCKMAX
12ns (-335)
13ns (-262/-26A/-265)
30
34
30
34
30
34
0.45ns (-335)
0.5ns (-262/-26A/-265)
2D
32
2D
32
2D
32
SDRAM Device Max DQS-DQ Skew
t
Time, DQSQ
0.55ns (-335)
0.75ns (-262/-26A/-265)
55
75
55
75
55
75
SDRAM Device Max Read Data Hold
t
Skew Factor, QHS
46-61 Reserved
00
01/11
00
00
01/11
00
00
01/11
00
47
DIMM Height
Standard/Low-Profile
Release 1.0
46-61 Reserved
62
63
SPD Revision
10
10
10
Checksum For Bytes 0-62
-335
-262
-26A
-265
05/15
98/A8
C5/D5
F5/05
28/38
BB/CB
E8/F8
18/28
69/79
FC/0C
29/39
59/69
64
65-71
72
MICRON
(Continued)
01–12
2C
FF
2C
FF
2C
FF
Manufacturer’s JEDEC ID Code
Manufacturer’s JEDEC ID Code
Manufacturing Location
01–0C
01–0C
01–0C
73-90
91
Variable Data
Variable Data
00
Variable Data
Variable Data
00
Variable Data
Variable Data
00
Module Part Number (ASCII)
PCB Identification Code
92
0
Identification Code (Continued)
Year of Manufacture in BCD
93
Variable Data
Variable Data
Variable Data
pdf: 09005aef80739fa5, source: 09005aef807397e5
DD16C32_64_128_256x64AG.fm - Rev. C 9/04 EN
Micron Technology, Inc., reserves the right to change products or specifications without notice.
©2004 Micron Technology, Inc.
30
MICRON [ MICRON TECHNOLOGY ]
