MT18VDDT12872AG-40BF1 Micron Technology Inc, MT18VDDT12872AG-40BF1 Datasheet - Page 27

• Manufacturer Part Number: MT18VDDT12872AG-40BF1
• Description: MODULE DDR SDRAM 1GB 184-DIMM
• Manufacturer: Micron Technology Inc

Specifications of MT18VDDT12872AG-40BF1

• Memory Type: DDR SDRAM
• Memory Size: 1GB
• Speed: 400MT/s
• Package / Case: 184-DIMM
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Table 21: Serial Presence-Detect Matrix
“1”/“0”: Serial Data, “driven to HIGH”/“driven to LOW”
pdf: 09005aef80814e61, source: 09005aef80a43eed
DDA18C32_64_128x72AG.fm - Rev. E 9/04 EN
BYTE
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
0
1
2
3
4
5
6
7
8
9
Number of SPD Bytes Used by Micron
Total Number of Bytes in SPD Device
Fundamental Memory Type
Number of Row Addresses on
Assembly
Number of Column Addresses on
Assembly
Number of Physical Ranks on DIMM
Module Data Width
Module Data Width (Continued)
Module Voltage Interface Levels
SDRAM Cycle Time,
CAS Latency = 3
SDRAM Access from Clock,
CAS Latency = 3
Module Configuration Type
Refresh Rate/Type
SDRAM Device Width (Primary DDR
SDRAM)
Error-checking DDR SDRAM Data
Width
Minimum Clock Delay, Back-to-Back
Random Column Access
Burst Lengths Supported
Number of Banks on DDR SDRAM
Device
CAS Latencies Supported
CS Latency
WE Latency
SDRAM Module Attributes
SDRAM Device Attributes: General
SDRAM Cycle Time,
(CAS Latency = 2.5)
SDRAM Access from CK,
(CAS Latency = 2.5)
SDRAM Cycle Time,
(CAS Latency = 2)
SDRAM Access from CK,
(CAS LATENCY = 2)
Minimum Row Precharge Time,
Minimum Row Active to Row Active,
t
Minimum RAS# to CAS# Delay,
Minimum RAS# Pulse Width,
RRD
DESCRIPTION
t
t
t
CK
CK
CK
t
t
AC
AC
t
AC
t
RAS
t
RCD
t
RP
system compatibility)
system compatibility)
256MB, 512MB, 1GB (x72, ECC, DR), PC3200
and PC 1600 system
and PC 1600 system
0.75ns (for PC 2100
ENTRY (VERSION)
15.62µs, 7.8µs/SELF
Fast/Concurrent AP
0.7ns (for PC 2700
7.5ns (for PC 2100
Unbuffered/Diff.
6ns (for PC2700
compatibility)
compatibility)
SDRAM DDR
0.7ns (-40B)
15ns (-40B)
10ns (-40B)
15ns (-40B)
40ns (-40B)
5ns (-40B)
SSTL 2.5V
3, 2.5, 2
1 clock
12, 13
10, 11
2, 4, 8
Clock
ECC
128
256
72
2
0
8
8
4
0
1
27
MT18VDDT3272A MT18VDDT6472A MT18VDDT12872A
Micron Technology, Inc., reserves the right to change products or specifications without notice.
184-PIN DDR SDRAM UDIMM
0A
80
08
07
0C
02
48
00
04
50
70
02
80
08
08
01
0E
04
1C
01
02
20
C0
60
70
75
75
3C
28
3C
28
0D
0A
80
08
07
02
48
00
04
50
70
02
82
08
08
01
0E
04
1C
01
02
20
C0
60
70
75
75
3C
28
3C
28
©2004 Micron Technology, Inc.
0D
0B
1C
80
08
07
02
48
00
04
50
70
02
82
08
08
01
0E
04
01
02
20
C0
60
70
75
75
3C
28
3C
28