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參數(shù)資料
| 型號(hào)： | MC-458CA727 |
| 廠商： | NEC Corp. |
| 英文描述： | 8M-WORD BY 72-BIT SYNCHRONOUS DYNAMIC RAM MODULE UNBUFFERED TYPE |
| 中文描述： | 800萬(wàn)字的72位同步動(dòng)態(tài)隨機(jī)存儲(chǔ)器模塊無(wú)緩沖型 |
| 文件頁(yè)數(shù)： | 9/16頁(yè) |
| 文件大小： | 190K |
| 代理商： | MC-458CA727 |
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Data Sheet M14279EJ3V0DS00
9
MC-458CB647
Asynchronous Characteristics
Parameter
Symbol
-A75
Unit
Note
MIN.
MAX.
ACT to REF/ACT command period (operation)
t
RC
67.5
ns
REF to REF/ACT command period (refresh)
t
RC1
67.5
ns
ACT to PRE command period
t
RAS
45
120,000
ns
PRE to ACT command period
t
RP
20
ns
Delay time ACT to READ/WRITE command
t
RCD
20
ns
ACT(one) to ACT(another) command period
t
RRD
15
ns
Data-in to PRE command period
t
DPL
8
ns
Data-in to ACT(REF) command
/CAS latency = 3
t
DAL3
1CLK+22.5
ns
1
period (Auto precharge)
/CAS latency = 2
t
DAL2
1CLK+20
ns
1
Mode register set cycle time
t
RSC
2
CLK
Transition time
t
T
0.5
30
ns
Refresh time (4,096 refresh cycles)
t
REF
64
ms
Note
This device can satisfy the t
DAL3
spec of 1CLK+20 ns for up to and including 125 MHz operation.
#
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PDF描述 |
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| MC-458CA726EFB-A10 | 8M-WORD BY 72-BIT SYNCHRONOUS DYNAMIC RAM MODULE UNBUFFERED TYPE |
| MC-458CB646EFB-A10 | 8M-WORD BY 64-BIT SYNCHRONOUS DYNAMIC RAM MODULE UNBUFFERED TYPE |
| MC-458CA726EFB-A80 | 8M-WORD BY 72-BIT SYNCHRONOUS DYNAMIC RAM MODULE UNBUFFERED TYPE |
| MC-458CB646EFB-A80 | 8M-WORD BY 64-BIT SYNCHRONOUS DYNAMIC RAM MODULE UNBUFFERED TYPE |
| MC-458CA726PFB-A10 | 8M-WORD BY 72-BIT SYNCHRONOUS DYNAMIC RAM MODULE UNBUFFERED TYPE |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MC-458CA727EFA-A75 | 制造商:NEC 制造商全稱:NEC 功能描述:8M-WORD BY 72-BIT SYNCHRONOUS DYNAMIC RAM MODULE UNBUFFERED TYPE |
| MC-458CA727PFA-A75 | 制造商:NEC 制造商全稱:NEC 功能描述:8M-WORD BY 72-BIT SYNCHRONOUS DYNAMIC RAM MODULE UNBUFFERED TYPE |
| MC-458CB641ES | 制造商:NEC 制造商全稱:NEC 功能描述:8M-WORD BY 64-BIT SYNCHRONOUS DYNAMIC RAM MODULE SO DIMM |
| MC-458CB641ES-A10 | 制造商:NEC 制造商全稱:NEC 功能描述:8M-WORD BY 64-BIT SYNCHRONOUS DYNAMIC RAM MODULE SO DIMM |
| MC-458CB641ES-A80 | 制造商:NEC 制造商全稱:NEC 功能描述:8M-WORD BY 64-BIT SYNCHRONOUS DYNAMIC RAM MODULE SO DIMM |
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