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參數(shù)資料
| 型號： | MC-458CB64S |
| 廠商： | NEC Corp. |
| 英文描述： | Synchronous Dynamic RAM Module(同步動態(tài)RAM模塊) |
| 中文描述： | 同步動態(tài)隨機存儲器模塊（同步動態(tài)內(nèi)存模塊） |
| 文件頁數(shù)： | 11/20頁 |
| 文件大小： | 196K |
| 代理商： | MC-458CB64S |
11
MC-458CB64S
Asynchronous Characteristics
[MC-458CB64S]
Parameter
Symbol
-A10
-A12
Unit
Note
MIN.
MAX.
MIN.
MAX.
REF to REF/ACT command period
t
RC
100
120
ns
ACT to PRE command period
t
RAS
60
120,000
72
120,000
ns
PRE to ACT command period
t
RP
30
36
ns
Delay time ACT to READ/WRITE command
t
RCD
30
36
ns
ACT(0) to ACT(1) command period
t
RRD
20
24
ns
Data-in to PRE command period
t
DPL
10
12
ns
Data-in to ACT(REF) command
/CAS latency = 3
t
DAL3
40
48
ns
period (Auto precharge)
/CAS latency = 2
t
DAL2
40
48
ns
Mode register set cycle time
t
RSC
20
20
ns
Transition time
t
T
1
30
1
30
ns
Refresh time (4,096 refresh cycles)
t
REF
64
64
ms
[MC-458CB64SA]
Parameter
Symbol
-A80
-A10
-A10B
Unit Note
MIN.
MAX.
MIN.
MAX.
MIN.
MAX.
REF to REF/ACT command period
t
RC
70
70
90
ns
ACT to PRE command period
t
RAS
48
120,000
50
120,000
60
120,000
ns
PRE to ACT command period
t
RP
20
20
30
ns
Delay time ACT to READ/WRITE
command
t
RCD
20
20
30
ns
ACT(0) to ACT(1) command period
t
RRD
16
20
20
ns
Data-in to PRE command period
t
DPL
8
10
10
ns
Data-in to ACT(REF) command /CAS latency = 3
t
DAL3
1CLK+20
1CLK+20
1CLK+30
ns
period (Auto precharge)
/CAS latency = 2
t
DAL2
1CLK+20
1CLK+20
1CLK+30
ns
Mode register set cycle time
t
RSC
2
2
2
CLK
Transition time
t
T
0.5
30
1
30
1
30
ns
Refresh time (4,096 refresh cycles)
t
REF
64
64
64
ms
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PDF描述 |
|---|---|
| MC-458CD64S | Synchronous Dynamic RAM Module(同步動態(tài)RAM 模塊) |
| MC-458DA726 | 8M-Word By72-BIT Dynamic RAM Module(8M×72位動態(tài)RAM模塊) |
| MC-45D16CA721KF-C75 | 16 M-WORD BY 72-BIT DDR SYNCHRONOUS DYNAMIC RAM MODULE UNBUFFERED TYPE |
| MC-45D16CB641KF-C75 | 16 M-WORD BY 64-BIT DDR SYNCHRONOUS DYNAMIC RAM MODULE UNBUFFERED TYPE |
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| MC458CB64SAA10B | 制造商:NEC Electronics Corporation 功能描述: |
| MC459 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:4 wide 3-2-2-3 input expander for and-or-invert gae |
| MC-45D16CA721 | 制造商:NEC 制造商全稱:NEC 功能描述:16 M-WORD BY 72-BIT DDR SYNCHRONOUS DYNAMIC RAM MODULE UNBUFFERED TYPE |
| MC-45D16CA721KF-C75 | 制造商:NEC 制造商全稱:NEC 功能描述:16 M-WORD BY 72-BIT DDR SYNCHRONOUS DYNAMIC RAM MODULE UNBUFFERED TYPE |
| MC-45D16CA721KF-C80 | 制造商:NEC 制造商全稱:NEC 功能描述:16 M-WORD BY 72-BIT DDR SYNCHRONOUS DYNAMIC RAM MODULE UNBUFFERED TYPE |
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