參數(shù)資料
型號(hào)： MT18VDVF6472DG-265XX
元件分類： DRAM
英文描述： 64M X 72 DDR DRAM MODULE, 0.75 ns, DMA184
封裝： DIMM-184
文件頁(yè)數(shù)： 31/38頁(yè)
文件大?。?/td> 713K
代理商： MT18VDVF6472DG-265XX
PDF: 09005aef81c73825/Source: 09005aef81c73837
Micron Technology, Inc., reserves the right to change products or specifications without notice.
DVF18C64_128x72D_2.fm - Rev. A 8/05 EN
37
2003, 2004, 2005 Micron Technology, Inc. All rights reserved.
512MB, 1GB: (x72, DR) 184-Pin DDR VLP RDIMM
Serial Presence-Detect
Notes: 1. Value for -26A tCK set to 7ns (0x70) for optimum BIOS compatibility. Actual device specifi-
cation vaule is 7.5ns.
2. The value of tRAS used for -26A/-265 modules is calculated from tRC - tRP. Actual device
specification value is 40 ns.
3. The JEDEC SPD specification allows fast or slow slew rate values for these bytes. The worst-
case (slow slew rate) value is repesented here. Systems requiring the fast slew rate setup
and hold values are supported, provided the faster minimum slew rate is met.
33
Address and Command Hold Time, tIH (See note
0.80ns (-335)
1ns (-262/-26A/-265)
80
A0
80
A0
34
Data/Data Mask Input Setup Time, tDS
0.45ns (-335)
0.50ns (-262/-26A/-265)
45
50
45
50
35
Data/Data Mask Input Hold Time, tDH
0.45ns (-335)
0.50ns (-262/-26A/-265)
45
50
45
50
36-40 Reserved
00
41
Minimum Active Auto Refresh Time tRC
60ns (-335/-262)
65ns (-26A/-265)
3C
41
3C
41
42
Minimum Auto Refresh to Active/
Auto Refresh Command Period, tRFC
72ns (-335)
75ns (-262/-26A/-265)
48
4B
48
4B
43
SDRAM Device Max Cycle Time tCKMAX
12ns (-335)
13ns (-262/-26A/-265)
30
34
30
34
44
SDRAM Device Max DQS-DQ Skew Time, tDQSQ
0.40ns (-335)
0.5ns (-262/-26A/-265)
28
32
28
32
45
SDRAM Device Max Read Data Hold Skew Factor,
tQHS
0.50ns (-335)
0.75ns (-262/-26A/-265)
50
75
50
75
46
Reserved
00
47
DIMM Height
11
48–61 Reserved
00
62
SPD Revision
Release 1.0
10
63
Checksum for Bytes 0–62
-335
-262
-26A
-265
46
E3
10
40
87
24
51
81
64
Manufacturer’s JEDEC ID Code
MICRON
2C
65-71 Manufacturer’s JEDEC ID Code
(Continued)
FF
72
Manufacturing Location
01–12
01–0C
73-90 Module Part Number (ASCII)
Variable Data
91
PCB Identification Code
1-9
01-09
92
Identification Code (Continued)
000
00
93
Year of Manufacture in BCD
Variable Data
94
Week of Manufacture in BCD
Variable Data
95-98 Module Serial Number
Variable Data
99-127 Manufacturer-specific Data (RSVD)
––
Table 21:
Serial Presence-Detect Matrix (Continued)
“1”/“0”: Serial Data, “driven to HIGH”/“driven to LOW”; notes appear on page 37
Byte
Description
Entry (Version)
MT18VDVF6472D MT18VDVF12872D
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