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參數(shù)資料
| 型號(hào)： | MC-458CA721ESA |
| 廠商： | NEC Corp. |
| 英文描述： | 8M-WORD BY 72-BIT SYNCHRONOUS DYNAMIC RAM MODULE SO DIMM |
| 中文描述： | 800萬字的72位同步動(dòng)態(tài)隨機(jī)存儲(chǔ)器模塊以便內(nèi)存 |
| 文件頁數(shù)： | 10/16頁 |
| 文件大?。?/td> | 142K |
| 代理商： | MC-458CA721ESA |
Data Sheet M14494EJ2V0DS00
10
MC-458CA721ESA, 458CA721PSA
Serial PD
Byte No.
(1/2)
Function Described
Hex
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Notes
0
Defines the number of bytes written into
serial PD memory
Total number of bytes of serial PD memory
80H
1
0
0
0
0
0
0
0
128 bytes
1
08H
0
0
0
0
1
0
0
0
256 bytes
2
Fundamental memory type
04H
0
0
0
0
0
1
0
0
SDRAM
3
Number of rows
0CH
0
0
0
0
1
1
0
0
12 rows
4
Number of columns
09H
0
0
0
0
1
0
0
1
9 columns
5
Number of banks
01H
0
0
0
0
0
0
0
1
1 bank
6
Data width
48H
0
1
0
0
1
0
0
0
72 bits
7
Data width (continued)
00H
0
0
0
0
0
0
0
0
0
8
Voltage interface
01H
0
0
0
0
0
0
0
1
LVTTL
9
CL = 3 Cycle time
-A80
80H
1
0
0
0
0
0
0
0
8 ns
-A10
A0H
1
0
1
0
0
0
0
0
10 ns
10
CL = 3 Access time
-A80
60H
0
1
1
0
0
0
0
0
6 ns
-A10
60H
0
1
1
0
0
0
0
0
6 ns
11
DIMM configuration type
02H
0
0
0
0
0
0
1
0
ECC
12
Refresh rate/type
80H
1
0
0
0
0
0
0
0
Normal
13
SDRAM width
10H
0
0
0
1
0
0
0
0
×
16
14
Error checking SDRAM width
10H
0
0
0
1
0
0
0
0
×
16
15
Minimum clock delay
01H
0
0
0
0
0
0
0
1
1 clock
16
Burst length supported
8FH
1
0
0
0
1
1
1
1
1, 2, 4, 8, F
17
Number of banks on each SDRAM
04H
0
0
0
0
0
1
0
0
4 banks
18
/CAS latency supported
06H
0
0
0
0
0
1
1
0
2, 3
19
/CS latency supported
01H
0
0
0
0
0
0
0
1
0
20
/WE latency supported
01H
0
0
0
0
0
0
0
1
0
21
SDRAM module attributes
00H
0
0
0
0
0
0
0
0
22
SDRAM device attributes : General
0EH
0
0
0
0
1
1
1
0
23
CL = 2 Cycle time
-A80
A0H
1
0
1
0
0
0
0
0
10 ns
-A10
D0H
1
1
0
1
0
0
0
0
13 ns
24
CL = 2 Access time
-A80
60H
0
1
1
0
0
0
0
0
6 ns
-A10
70H
0
1
1
1
0
0
0
0
7 ns
25-26
00H
0
0
0
0
0
0
0
0
27
t
RP(MIN.)
-A80
14H
0
0
0
1
0
1
0
0
20 ns
-A10
14H
0
0
0
1
0
1
0
0
20 ns
28
t
RRD(MIN.)
-A80
10H
0
0
0
1
0
0
0
0
16 ns
-A10
14H
0
0
0
1
0
1
0
0
20 ns
29
t
RCD(MIN.)
-A80
14H
0
0
0
1
0
1
0
0
20 ns
-A10
14H
0
0
0
1
0
1
0
0
20 ns
30
t
RAS(MIN.)
-A80
30H
0
0
1
1
0
0
0
0
48 ns
-A10
32H
0
0
1
1
0
0
1
0
50 ns
31
Module bank density
10H
0
0
0
1
0
0
0
0
64M bytes
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相關(guān)代理商/技術(shù)參數(shù) |
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| MC-458CA721ESA-A10 | 制造商:ELPIDA 制造商全稱:Elpida Memory 功能描述:8M-WORD BY 72-BIT SYNCHRONOUS DYNAMIC RAM MODULE (SO DIMM) |
| MC-458CA721ESA-A80 | 制造商:NEC 制造商全稱:NEC 功能描述:8M-WORD BY 72-BIT SYNCHRONOUS DYNAMIC RAM MODULE SO DIMM |
| MC-458CA721PSA | 制造商:NEC 制造商全稱:NEC 功能描述:8M-WORD BY 72-BIT SYNCHRONOUS DYNAMIC RAM MODULE SO DIMM |
| MC-458CA721PSA-A10 | 制造商:NEC 制造商全稱:NEC 功能描述:8M-WORD BY 72-BIT SYNCHRONOUS DYNAMIC RAM MODULE SO DIMM |
| MC-458CA721PSA-A80 | 制造商:NEC 制造商全稱:NEC 功能描述:8M-WORD BY 72-BIT SYNCHRONOUS DYNAMIC RAM MODULE SO DIMM |
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