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CY7C4251V-25AXC PDF预览

CY7C4251V-25AXC

更新时间: 2024-11-24 03:02:55
品牌 Logo 应用领域
赛普拉斯 - CYPRESS 存储内存集成电路先进先出芯片时钟
页数 文件大小 规格书
18页 522K
描述
Low-Voltage 64/256/512/1K/2K/4K/8K x 9 Synchronous FIFOs

CY7C4251V-25AXC 技术参数

是否Rohs认证: 符合生命周期:Obsolete
零件包装代码:QFP包装说明:7 X 7 MM, 1 MM HEIGHT, LEAD FREE, PLASTIC, TQFP-32
针数:32Reach Compliance Code:unknown
ECCN代码:EAR99HTS代码:8542.32.00.71
Factory Lead Time:1 week风险等级:5.61
最长访问时间:15 ns最大时钟频率 (fCLK):40 MHz
周期时间:25 nsJESD-30 代码:S-PQFP-G32
JESD-609代码:e3长度:7 mm
内存密度:73728 bit内存集成电路类型:OTHER FIFO
内存宽度:9湿度敏感等级:3
功能数量:1端子数量:32
字数:8192 words字数代码:8000
工作模式:SYNCHRONOUS最高工作温度:70 °C
最低工作温度:组织:8KX9
可输出:YES封装主体材料:PLASTIC/EPOXY
封装代码:TQFP封装等效代码:TQFP32,.35SQ,32
封装形状:SQUARE封装形式:FLATPACK, THIN PROFILE
并行/串行:PARALLEL峰值回流温度(摄氏度):260
电源:3.3 V认证状态:Not Qualified
座面最大高度:1.2 mm最大待机电流:0.006 A
子类别:FIFOs最大压摆率:0.02 mA
最大供电电压 (Vsup):3.6 V最小供电电压 (Vsup):3 V
标称供电电压 (Vsup):3.3 V表面贴装:YES
技术:CMOS温度等级:COMMERCIAL
端子面层:Matte Tin (Sn)端子形式:GULL WING
端子节距:0.8 mm端子位置:QUAD
处于峰值回流温度下的最长时间:20宽度:7 mm
Base Number Matches:1

CY7C4251V-25AXC 数据手册

 浏览型号CY7C4251V-25AXC的Datasheet PDF文件第2页浏览型号CY7C4251V-25AXC的Datasheet PDF文件第3页浏览型号CY7C4251V-25AXC的Datasheet PDF文件第4页浏览型号CY7C4251V-25AXC的Datasheet PDF文件第5页浏览型号CY7C4251V-25AXC的Datasheet PDF文件第6页浏览型号CY7C4251V-25AXC的Datasheet PDF文件第7页 
CY7C4421V/4201V/4211V/4221VCY7C4231V/4241V/4251VLow-Voltage 64/256/512/1K/2K/4K/8K  
x 9 Synchronous FIFOs  
CY7C4421V/4201V/4211V/4221V  
CY7C4231V/4241V/4251V  
Low-Voltage 64/256/512/1K/2K/4K/8K x 9 Synchronous FIFOs  
Space saving 32-pin 7 mm × 7 mm TQFP  
Featuresb  
32-pin PLCC  
High-speed, low-power, first-in, first-out (FIFO)  
memories  
• Available in Pb-Free Packages  
64 x 9 (CY7C4421V)  
256 x 9 (CY7C4201V)  
512 x 9 (CY7C4211V)  
1K x 9 (CY7C4221V)  
2K x 9 (CY7C4231V)  
4K x 9 (CY7C4241V)  
8K x 9 (CY7C4251V)  
Functional Description  
The CY7C42X1V are high-speed, low-power, FIFO memories  
with clocked read and write interfaces. All are nine bits wide.  
Programmable features include Almost Full/Almost Empty  
flags. These FIFOs provide solutions for a wide variety of data  
buffering needs, including high-speed data acquisition, multi-  
processor interfaces, and communications buffering.  
These FIFOs have 9-bit input and output ports that are  
controlled by separate clock and enable signals. The input port  
is controlled by a Free-Running Clock (WCLK) and two Write  
Enable pins (WEN1, WEN2/LD).  
High-speed 66-MHz operation (15-ns read/write cycle  
time)  
Low power (ICC = 20 mA)  
When WEN1 is LOW and WEN2/LD is HIGH, data is written  
into the FIFO on the rising edge of the WCLK signal. While  
WEN1, WEN2/LD is held active, data is continually written into  
the FIFO on each WCLK cycle. The output port is controlled in  
a similar manner by a Free-Running Read Clock (RCLK) and  
two Read Enable Pins (REN1, REN2). In addition, the  
CY7C42X1V has an Output Enable Pin (OE). The Read  
(RCLK) and Write (WCLK) clocks may be tied together for  
single-clock operation or the two clocks may be run indepen-  
dently for asynchronous read/write applications. Clock  
frequencies up to 66 MHz are achievable.  
• 3.3V operation for low power consumption and easy  
integration into low-voltage systems  
• 5V-tolerant inputs VIH max = 5V  
• Fully asynchronous and simultaneous read and write  
operation  
Empty, Full, and Programmable Almost Empty and  
Almost Full status flags  
• TTL compatible  
• Output Enable (OE) pin  
Depth expansion is possible using one enable input for system  
control, while the other enable is controlled by expansion logic  
to direct the flow of data.  
• Independent read and write enable pins  
• Center power and ground pins for reduced noise  
• Width expansion capability  
Pin Configuration  
Logic Block Diagram  
D
08  
PLCC  
Top View  
INPUT  
REGISTER  
4
3
2
1 323130  
29  
28  
D
D
PAF  
PAE  
GND  
REN1  
RCLK  
REN2  
OE  
RS  
WEN1  
1
5
6
7
8
9
0
27 WCLK  
26  
25  
24  
23  
22  
21  
WCLKWEN1 WEN2/LD  
WEN2/LD  
V
CC  
FLAG  
PROGRAM  
REGISTER  
Q
Q
Q
Q
10  
11  
12  
13  
8
7
6
5
WRITE  
CONTROL  
14151617181920  
EF  
PAE  
PAF  
FF  
FLAG  
LOGIC  
Dual Port  
RAM Array  
64 x 9  
WRITE  
POINTER  
READ  
POINTER  
8Kx 9  
RESET  
LOGIC  
RS  
THREE-STATE  
OUTPUTREGISTER  
READ  
CONTROL  
OE  
Q
08  
RCLK REN1 REN2  
Cypress Semiconductor Corporation  
Document #: 38-06010 Rev. *B  
3901 North First Street  
San Jose, CA 95134  
408-943-2600  
Revised July 14, 2005  

CY7C4251V-25AXC 替代型号

型号 品牌 替代类型 描述 数据表
CY7C4251-25AC CYPRESS

完全替代

64/256/512/1K/2K/4K/8K x 9 Synchronous FIFOs
CY7C4251V-25AC CYPRESS

完全替代

Low-Voltage 64/256/512/1K/2K/4K/8K x 9 Synchronous FIFOs
CY7C4251V-15AC CYPRESS

类似代替

Low-Voltage 64/256/512/1K/2K/4K/8K x 9 Synchronous FIFOs

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暂无描述
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获取价格

256/512/1K/2K/4K x 9 Asynchronous FIFO