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AS7C251MNTD36A-167TQC PDF预览

AS7C251MNTD36A-167TQC

更新时间: 2024-11-25 04:08:55
品牌 Logo 应用领域
ALSC 静态存储器
页数 文件大小 规格书
22页 453K
描述
ZBT SRAM, 1MX36, 7.5ns, CMOS, PQFP100, 14 X 20 MM, TQFP-100

AS7C251MNTD36A-167TQC 数据手册

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April 2004  
AS7C251MNTD32A  
AS7C251MNTD36A  
®
2.5V 1M × 32/36 SRAM with NTDTM  
Features  
• Common data inputs and data outputs  
• Organization: 1,048,576 words × 32 or 36 bits  
• NTD™1 architecture for efficient bus operation  
• Fast clock speeds to 200 MHz in LVTTL/LVCMOS  
• Fast clock to data access: 3.1/3.4/3.8 ns  
• Fast OE access time: 3.1/3.4/3.8 ns  
• Asynchronous output enable control  
• Available in 100-pin TQFP and 165-ball BGA packages  
• Byte write enables  
• Clock enable for operation hold  
• Multiple chip enables for easy expansion  
• 2.5V core power supply  
• Fully synchronous operation  
• Flow-through or pipelined mode  
• Self-timed write cycles  
• Interleaved or linear burst modes  
• Snooze mode for standby operation  
• Boundary scan using IEEE 1149.1 JTAG function  
1. NTD™ is a trademark of Alliance Semiconductor Corporation. All trade-  
marks mentioned in this document are the property of their respective owners.  
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  
Control  
logic  
CLK  
BWb  
BWc  
BWd  
ADV / LD  
FT  
1M x 32/36  
SRAM  
LBO  
ZZ  
CLK  
Array  
32/36  
32/36  
DQ[a,b,c,d]  
Data  
Input  
Register  
D
Q
32/36  
32/36  
CLK  
32/36  
CLK  
CEN  
CLK  
Output  
Register  
OE  
32/36  
OE  
DQ[a,b,c,d]  
Selection guide  
-200  
5
-167  
6
-133  
7.5  
Units  
ns  
Minimum cycle time  
Maximum pipelined clock frequency  
Maximum pipelined clock access time  
Maximum operating current  
200  
3.1  
400  
120  
70  
167  
3.4  
350  
110  
70  
133  
3.8  
MHz  
ns  
325  
100  
70  
mA  
mA  
mA  
Maximum standby current  
Maximum CMOS standby current (DC)  
4/26/04, V 1.0  
Alliance Semiconductor  
P. 1 of 22  
Copyright © Alliance Semiconductor. All rights reserved.  

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