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CY7C4231V-25AC

更新时间： 2024-11-27 22:13:19
品牌 Logo 应用领域
赛普拉斯 - CYPRESS 先进先出芯片
页数 文件大小 规格书
17页 264K
描述
Low-Voltage 64/256/512/1K/2K/4K/8K x 9 Synchronous FIFOs

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CY7C4231V-25AC 数据手册

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CY7C4421V/4201V/4211V/4221V  
CY7C4231V/4241V/4251V  
Low-Voltage 64/256/512/1K/2K/4K/8K x 9 Synchronous FIFOs  
Features  
Functional Description  
• High-speed, low-power, first-in, first-out (FIFO)  
memories  
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.  
• 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)  
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)  
• 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  
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.  
• TTL compatible  
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.  
• Output Enable (OE) pin  
• Independent read and write enable pins  
• Center power and ground pins for reduced noise  
• Width expansion capability  
• Space saving 32-pin 7 mm × 7 mm TQFP  
• 32-pin PLCC  
Pin Configuration  
Logic Block Diagram  
D
0− 8  
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  
TQFP  
Top View  
WRITE  
POINTER  
READ  
POINTER  
8Kx 9  
32 31 30 2928 27 26 25  
1
2
3
4
5
6
7
8
24  
WEN1  
D
D
1
0
RESET  
LOGIC  
RS  
23  
WCLK  
WEN2/LD  
22  
21  
20  
19  
PAF  
PAE  
GND  
V
CC  
THREE-STATE  
OUTPUTREGISTER  
Q
Q
8
7
READ  
CONTROL  
REN1  
RCLK  
REN2  
Q
Q
6
5
18  
17  
OE  
9 10 11 12 13 14 15 16  
Q
0− 8  
RCLK REN1 REN2  
Cypress Semiconductor Corporation  
Document #: 38-06010 Rev. *A  
•
3901 North First Street  
•
San Jose, CA 95134  
•
408-943-2600  
Revised August 22, 2003  
1234567...17

中文翻译

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CY7C4231V-25AC 替代型号

型号 品牌 替代类型 描述 数据表
CY7C4231V-25AXC CYPRESS

完全替代

 Low-Voltage 64/256/512/1K/2K/4K/8K x 9 Synchronous FIFOs
72231L25PF IDT

类似代替

 TQFP-32, Tray
CY7C4231-35AC CYPRESS

功能相似

 FIFO, 2KX9, 20ns, Synchronous, CMOS, PQFP32, 7 X 7 MM, 1 MM HEIGHT, PLASTIC, TQFP-32

与CY7C4231V-25AC相关器件

型号 品牌 获取价格 描述 数据表
CY7C4231V-25ACT CYPRESS

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 		FIFO, 2KX9, 15ns, Synchronous, CMOS, PQFP32, 7 X 7 MM, 1 MM HEIGHT, PLASTIC, TQFP-32
CY7C4231V-25AXC CYPRESS

获取价格

 		Low-Voltage 64/256/512/1K/2K/4K/8K x 9 Synchronous FIFOs
CY7C4231V-25JC CYPRESS

获取价格

 		Low-Voltage 64/256/512/1K/2K/4K/8K x 9 Synchronous FIFOs
CY7C4231V-25JCR CYPRESS

获取价格

 		FIFO, 2KX9, Synchronous, CMOS, PQCC32, PLASTIC, LCC-32
CY7C4231V-25JCT CYPRESS

获取价格

 		FIFO, 2KX9, 15ns, Synchronous, CMOS, PQCC32, PLASTIC, LCC-32
CY7C4231V-35AC CYPRESS

获取价格

 		FIFO, 2KX9, 20ns, Synchronous, CMOS, PQFP32, 7 X 7 MM, 1 MM HEIGHT, PLASTIC, TQFP-32
CY7C4231V-35JC CYPRESS

获取价格

 		FIFO, 2KX9, 20ns, Synchronous, CMOS, PQCC32, PLASTIC, LCC-32
CY7C4231V-35JCR CYPRESS

获取价格

 		FIFO, 2KX9, Synchronous, CMOS, PQCC32, PLASTIC, LCC-32
CY7C4231V-35JCT CYPRESS

获取价格

 		FIFO, 2KX9, 20ns, Synchronous, CMOS, PQCC32, PLASTIC, LCC-32
CY7C4235 CYPRESS

获取价格

 		64, 256, 512, 1K, 2K, 4K x 18 Synchronous FIFOs

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