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參數(shù)資料
| 型號： | MC-454AC726 |
| 廠商： | NEC Corp. |
| 英文描述： | 4M-Word By 72-BIT Dynamic RAM Module(4M×72位動態(tài)RAM模塊) |
| 中文描述： | 分詞由72位動態(tài)內存模塊（4米× 72位動態(tài)內存模塊） |
| 文件頁數(shù)： | 9/16頁 |
| 文件大小： | 150K |
| 代理商： | MC-454AC726 |
9
MC-454AC726
Asynchronous Characteristics
Parameter
Symbol
-A80
-A10
Unit
Note
MIN.
MAX.
MIN.
MAX.
REF to REF/ACT command period
t
RC
70
70
ns
ACT to PRE command period
t
RAS
48
120,000
50
120,000
ns
PRE to ACT command period
t
RP
20
20
ns
Delay time ACT to READ/WRITE command
t
RCD
20
20
ns
ACT(0) to ACT(1) command period
t
RRD
16
20
ns
Data-in to PRE command period
t
DPL
8
10
ns
Data-in to ACT(REF) command period /CAS latency = 3
t
DAL3
1CLK+20
1CLK+20
ns
(Auto precharge)
/CAS latency = 2
t
DAL2
1CLK+20
1CLK+20
ns
Mode register set cycle time
t
RSC
2
2
CLK
Transition time
t
T
0.5
30
1
30
ns
Refresh time
t
REF
32
32
ms
相關PDF資料 |
PDF描述 |
|---|---|
| MC-454AD644-A67 | 4M-WORD BY 72-BIT SYNCHRONOUS DYNAMIC RAM MODULE UNBUFFERED TYPE |
| MC-454AC724 | 4M-WORD BY 72-BIT SYNCHRONOUS DYNAMIC RAM MODULE UNBUFFERED TYPE |
| MC-454AC724F-A67 | 4M-WORD BY 72-BIT SYNCHRONOUS DYNAMIC RAM MODULE UNBUFFERED TYPE |
| MC-454AD644 | 4M-WORD BY 72-BIT SYNCHRONOUS DYNAMIC RAM MODULE UNBUFFERED TYPE |
| MC-454AD646 | 4M-WORD BY 72-BIT SYNCHRONOUS DYNAMIC RAM MODULE UNBUFFERED TYPE |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| MC-454AD644 | 制造商:NEC 制造商全稱:NEC 功能描述:4M-WORD BY 72-BIT SYNCHRONOUS DYNAMIC RAM MODULE UNBUFFERED TYPE |
| MC-454AD644-A10 | 制造商:NEC 制造商全稱:NEC 功能描述:4M-WORD BY 72-BIT SYNCHRONOUS DYNAMIC RAM MODULE UNBUFFERED TYPE |
| MC-454AD644-A12 | 制造商:NEC 制造商全稱:NEC 功能描述:4M-WORD BY 72-BIT SYNCHRONOUS DYNAMIC RAM MODULE UNBUFFERED TYPE |
| MC-454AD644-A67 | 制造商:NEC 制造商全稱:NEC 功能描述:4M-WORD BY 72-BIT SYNCHRONOUS DYNAMIC RAM MODULE UNBUFFERED TYPE |
| MC-454AD646 | 制造商:NEC 制造商全稱:NEC 功能描述:4M-WORD BY 72-BIT SYNCHRONOUS DYNAMIC RAM MODULE UNBUFFERED TYPE |
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