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AS7C251MNTD18A-133BCN PDF预览

AS7C251MNTD18A-133BCN

更新时间: 2024-11-27 13:05:39
品牌 Logo 应用领域
ALSC 静态存储器
页数 文件大小 规格书
18页 436K
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AS7C251MNTD18A-133BCN 数据手册

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December 2004  
AS7C251MNTD18A  
®
2.5V 1M x 18 Pipelined SRAM with NTDTM  
Features  
• Organization: 1,048,576 words × 18 bits  
• Clock enable for operation hold  
• Multiple chip enables for easy expansion  
• 2.5V core power supply  
• NTD architecture for efficient bus operation  
• Fast clock speeds to 166 MHz  
• Fast clock to data access: 3.5/3.8 ns  
• Fast OE access time: 3.5/3.8 ns  
• Fully synchronous operation  
• Self-timed write cycles  
• Interleaved or linear burst modes  
• Snooze mode for standby operation  
• Asynchronous output enable control  
• Available in 100-pin TQFP package  
• Individual byte write and global write  
Logic block diagram  
20  
20  
Q
A[19:0]  
D
Address  
register  
burst logic  
CLK  
D
Q
CE0  
CE1  
CE2  
Write delay  
addr. registers  
20  
CLK  
R/W  
BWa  
BWb  
Control  
logic  
CLK  
ADV / LD  
1M x 18  
LBO  
ZZ  
SRAM  
array  
CLK  
18  
18  
DQ [a,b]  
Data  
input  
register  
D
Q
18  
18  
CLK  
18  
CLK  
CEN  
CLK  
Output  
register  
OE  
18  
OE  
DQ [a,b]  
Selection guide  
-166  
6
-133  
7.5  
133  
3.8  
270  
75  
Units  
ns  
Minimum cycle time  
Maximum clock frequency  
Maximum clock access time  
Maximum operating current  
Maximum standby current  
166  
3.5  
290  
85  
MHz  
ns  
mA  
mA  
mA  
Maximum CMOS standby current (DC)  
40  
40  
12/23/04, v.2.2  
Alliance Semiconductor  
P. 1 of 18  
Copyright © Alliance Semiconductor. All rights reserved.  

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