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參數(shù)資料
| 型號： | IBM13T2649NC |
| 廠商： | IBM Microeletronics |
| 英文描述： | 2M x 64 SDRAM SO DIMM(2M x 64小外形雙列直插同步動態(tài)RAM模塊) |
| 中文描述： | 200萬蘇× 64 SDRAM的內(nèi)存（2米× 64小外形雙列直插同步動態(tài)內(nèi)存模塊） |
| 文件頁數(shù)： | 5/15頁 |
| 文件大?。?/td> | 303K |
| 代理商： | IBM13T2649NC |
IBM13T2649NC
2M x 64 SDRAM SO DIMM
88H4961
GA14-4477-01
Rev 3/98
IBM Corporation. All rights reserved.
Use is further subject to the provisions at the end of this document.
Page 5 of 15
Serial Presence Detect (Part 1 of 2)
Byte #
Description
SPD Entry Value
Serial PD Data Entry (Hexadecimal)
Notes
0
Number of Serial PD Bytes Written
during Production
Total Number of Bytes in Serial PD
device
Fundamental Memory Type
Number of Row Addresses on Assem-
bly
Number of Column Addresses on
Assembly
Number of DIMM Banks
Data Width of Assembly
Voltage Interface Level of this Assem-
bly
SDRAM Device Cycle Time
SDRAM Device Access Time from
Clock
DIMM Configuration Type
Refresh Rate/Type
Primary SDRAM Device Width
Error Checking SDRAM Device Width
SDRAM Device Attr: Min Clk Delay,
Random Col Access
SDRAM Device Attributes: Burst
Lengths Supported
SDRAM Device Attributes: Number of
Device Banks
SDRAM Device Attributes: CAS
Latencies Supported
SDRAM Device Attributes: CS
Latency
SDRAM Device Attributes: WE
Latency
SDRAM Module Attributes
128
80
1
256
08
2
SDRAM
04
3
11
0B
4
8
08
5
2
02
4000
6 - 7
x64
8
LVTTL
01
9
10.0ns
A0
10
8.0ns
80
11
12
13
14
Non-Parity
SR/1x(15.625us)
x16
N/A
00
80
10
00
15
1 Clock
01
16
1,2,4,8, Full Page
8F
17
2
02
18
1, 2, 3
07
19
0
01
20
0
01
21
Unbuffered
00
22
SDRAM Device Attributes: General
Wr-1/Rd Burst, Precharge
All, Auto-Precharge, V
DD
15.0ns
0E
23
Minimum Clock Cycle at CLX-1
Maximum Data Access Time (t
AC
)
from Clock at CLX-1
Minimum Clock Cycle Time at CLX-2
Maximum Data Access Time (t
AC
)
from Clock at CLX-2
Minimum Row Precharge Time (t
RP
)
Minimum Row Active to Row Active
delay (t
RRD
)
Minimum RAS to CAS delay (t
RCD
)
Minimum RAS Pulse width (t
RAS
)
Module Bank Density
F0
24
9.0ns
90
25
30.0ns
78
26
27.0ns
6C
27
30ns
1E
28
20ns
14
29
30
31
30ns
60ns
8MB
1E
3C
02
1. cc = Checksum Data byte, 00-FF (Hex)
2. “R” = Alphanumeric revision code, A-Z, 0-9
3. rr = ASCII coded revision code byte “R”
4. yy = Binary coded decimal year code, 00-99 (Decimal)
00-63 (Hex)
5. ww = Binary coded decimal week code, 01-52 (Decimal)
01-34 (Hex)
6. ss = Serial number data byte, 00-FF (Hex)
Discontinued (12/98 - last order; 9/99 last ship)
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