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參數資料
| 型號： | MC-428LFF721 |
| 廠商： | NEC Corp. |
| 英文描述： | 3.3 V Operation 16M-Word By 72-Bit Dynamic RAM Module(工作電壓為3.3V的動態RAM模塊) |
| 中文描述： | 3.3 V工作電壓1,600由72字位動態RAM模塊（工作電壓為3.3伏的動態內存模塊） |
| 文件頁數： | 1/32頁 |
| 文件大小： | 277K |
| 代理商： | MC-428LFF721 |
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1996
MOS INTEGRATED CIRCUIT
MC-428LFF721
3.3 V OPERATION 8M-WORD BY 72-BIT DYNAMIC RAM MODULE
UNBUFFERED TYPE, EDO
DATA SHEET
The mark
shows major revised points.
Document No. M11912EJ3V0DS00 (3rd edition)
Date Published October 1997 NS
Printed in Japan
The information in this document is subject to change without notice.
Description
The MC-428LFF721 is a 8,388,608 words by 72 bits dynamic RAM module on which 9 pieces of 64M DRAM :
μ
PD4264805 are assembled.
This module provides high density and large quantities of memory in a small space without utilizing the surface-
mounting technology on the printed circuit board.
Decoupling capacitors are mounted on power supply line for noise reduction.
Features
Unbuffered type
EDO (Hyper page mode)
8,388,608 words by 72 bits organization
Fast access and cycle time
Family
Access time
R/W cycle time
EDO (Hyper page mode)
Power consumption (MAX.)
(MAX.)
(MIN.)
cycle time (MIN.)
Active
Standby
MC-428LFF721-A50
50 ns
84 ns
20 ns
3.40 W
16.2 mW
MC-428LFF721-A60
60 ns
104 ns
25 ns
3.08 W
(CMOS level input)
Refresh cycle
Family
Refresh cycle
Refresh
MC-428LFF721-A50
8,192 cycles / 64 ms
/RAS only refresh, Normal read / write
MC-428LFF721-A60
4,096 cycles / 64 ms
/CAS before /RAS refresh, Hidden refresh
168-pin dual in-line memory module (Pin pitch = 1.27 mm)
Single +3.3 V ± 0.3 V power supply
Serial PD
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相關代理商/技術參數 |
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|---|---|
| MC428P | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
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| MC4300F | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| MC4312F | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
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