CY7C4251-15AC

CY7C4251-15AC Datasheet


CY7C4421/4201/4211/4221 CY7C4231/4241/425164/256/512/1K/2K/4K/8K x 9 Synchronous FIFOs

Part Datasheet
CY7C4251-15AC CY7C4251-15AC CY7C4251-15AC (pdf)
Related Parts Information
CY7C4201-15JXC CY7C4201-15JXC CY7C4201-15JXC
CY7C4241-10AXCT CY7C4241-10AXCT CY7C4241-10AXCT
CY7C4241-10AXC CY7C4241-10AXC CY7C4241-10AXC
CY7C4231-15JXCT CY7C4231-15JXCT CY7C4231-15JXCT
CY7C4231-15JXC CY7C4231-15JXC CY7C4231-15JXC
CY7C4231-15AXC CY7C4231-15AXC CY7C4231-15AXC
CY7C4221-15JXCT CY7C4221-15JXCT CY7C4221-15JXCT
CY7C4221-15JXC CY7C4221-15JXC CY7C4221-15JXC
CY7C4221-15AXCT CY7C4221-15AXCT CY7C4221-15AXCT
CY7C4221-15AXC CY7C4221-15AXC CY7C4221-15AXC
CY7C4201-15JXCT CY7C4201-15JXCT CY7C4201-15JXCT
CY7C4251-15JXC CY7C4251-15JXC CY7C4251-15JXC
CY7C4241-15JXCT CY7C4241-15JXCT CY7C4241-15JXCT
CY7C4251-15AXC CY7C4251-15AXC CY7C4251-15AXC
CY7C4251-15AXCT CY7C4251-15AXCT CY7C4251-15AXCT
CY7C4251-10JXCT CY7C4251-10JXCT CY7C4251-10JXCT
CY7C4251-10JXC CY7C4251-10JXC CY7C4251-10JXC
CY7C4251-10AXI CY7C4251-10AXI CY7C4251-10AXI
CY7C4251-15JXCT CY7C4251-15JXCT CY7C4251-15JXCT
CY7C4241-15JXC CY7C4241-15JXC CY7C4241-15JXC
CY7C4241-15JC CY7C4241-15JC CY7C4241-15JC
PDF Datasheet Preview
CY7C4421/4201/4211/4221 CY7C4231/4241/425164/256/512/1K/2K/4K/8K x 9 Synchronous FIFOs

CY7C4421/4201/4211/4221 CY7C4231/4241/4251
64/256/512/1K/2K/4K/8K x 9 Synchronous FIFOs
• High speed, low power, First-In First-Out FIFO memories 64 x 9 CY7C4421 256 x 9 CY7C4201 512 x 9 CY7C4211 1K x 9 CY7C4221 2K x 9 CY7C4231 4K x 9 CY7C4241 8K x 9 CY7C4251
• High speed 100 MHz operation 10 ns read/write cycle time
• Low power ICC = 35 mA
• Fully asynchronous and simultaneous read and write operation
• Empty, Full, and Programmable Almost Empty and Almost Full status flags
• TTL-compatible
• Expandable in width
• Output Enable OE pin
• Independent read and write enable pins
• Center power and ground pins for reduced noise
• Width-expansion capability
• Space saving 7 mm x 7 mm 32-pin TQFP
• Pin-compatible and functionally equivalent to IDT72421, 72201, 72211, 72221, 72231, and 72241
• Pb-free Packages Available

Functional Description

The CY7C42X1 are high speed, low power FIFO memories with clocked read and write interfaces. All are 9 bits wide. The CY7C42X1 are pin-compatible to IDT722X1. 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, multiprocessor 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 .

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 CY7C42X1 has an output enable pin OE . The Read RCLK and Write WCLK clocks can be tied together for single-clock operation or the two clocks can run independently for asynchronous read/write applications. Clock frequencies up to 100 MHz are achievable.

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.

Logic Block Diagram

D0 - 8

INPUT REGISTER

WCLK WEN1 WEN2/LD

Write CONTROL

Write POINTER

Dual Port RAM Array
64 x 9
8k x 9

FLAG PROGRAM REGISTER

FLAG LOGIC

Read POINTER

EF PAE PAF

RESET LOGIC

THREE-STATE OUTPUT REGISTER

Q0 - 8

Read CONTROL

RCLK REN1 REN2
• San Jose, CA 95134-1709
• 408-943-2600
[+] Feedback
Ordering Code

CY7C4201-15JC

CY7C4201-15JXC
1K x 9 Synchronous FIFO

Speed ns
Ordering Code

CY7C4221-15AXC

CY7C4221-15JXC
2K x 9 Synchronous FIFO

Speed ns
Ordering Code

CY7C4231-15AXC

CY7C4231-15JXC
4K x 9 Synchronous FIFO

Speed ns
Ordering Code

CY7C4241-10AC

CY7C4241-10AXC

CY7C4241-10JI

CY7C4241-15AC

CY7C4241-15JC

CY7C4241-15JXC
8K x 9 Synchronous FIFO

Speed ns
Ordering Code

CY7C4251-10AC

CY7C4251-10JC

CY7C4251-10JXC

CY7C4251-10AI

CY7C4251-10AXI

CY7C4251-15AC

CY7C4251-15AXC

CY7C4251-15JC

CY7C4251-15JXC

Package Name

Package Type
32-Pin Plastic Leaded Chip Carrier
32-Pin Pb-free Plastic Leaded Chip Carrier

Operating Range Commercial

Package Name

Package Type
32-Pin Pb-free Thin Quad Flatpack
32-Pin Pb-free Plastic Leaded Chip Carrier

Operating Range Commercial

Package Name

Package Type
32-Pin Pb-free Thin Quad Flatpack
32-Pin Pb-free Plastic Leaded Chip Carrier

Operating Range Commercial

Package Name

Package Type
32-Pin Thin Quad Flatpack
32-Pin Pb-free Thin Quad Flatpack
32-Pin Plastic Leaded Chip Carrier
32-Pin Thin Quad Flatpack
32-Pin Plastic Leaded Chip Carrier
32-Pin Pb-free Plastic Leaded Chip Carrier

Operating Range Commercial

Industrial Commercial

Package Name

Package Type
32-Pin Thin Quad Flatpack
32-Pin Plastic Leaded Chip Carrier
32-Pin Pb-free Plastic Leaded Chip Carrier
32-Pin Thin Quad Flatpack
*D 2863896 01/22/10 VKN/PYRS Removed inactive/pruned parts from the Ordering Information table Added Table of Contents Updated TQFP package diagram

Sales, Solutions, and Legal Information

Worldwide Sales and Design Support

Cypress maintains a worldwide network of offices, solution centers, manufacturer’s representatives, and distributors. To find the office closest to you, visit us at Cypress Locations.

Products Automotive Clocks & Buffers Interface Lighting & Power Control

Memory Optical & Image Sensing PSoC Touch Sensing USB Controllers Wireless/RF
cypress.com/go/automotive cypress.com/go/clocks
cypress.com/go/interface cypress.com/go/powerpsoc
cypress.com/go/plc cypress.com/go/memory
cypress.com/go/image cypress.com/go/psoc cypress.com/go/touch cypress.com/go/USB
cypress.com/go/wireless

PSoC Solutions psoc.cypress.com/solutions PSoC 1 | PSoC 3 | PSoC 5

Cypress Semiconductor Corporation, The information contained herein is subject to change without notice. Cypress Semiconductor Corporation assumes no responsibility for the use of any circuitry other than circuitry embodied in a Cypress product. Nor does it convey or imply any license under patent or other rights. Cypress products are not warranted nor intended to be used for medical, life support, life saving, critical control or safety applications, unless pursuant to an express written agreement with Cypress. Furthermore, Cypress does not authorize its products for use as critical components in life-support systems where a malfunction or failure may reasonably be expected to result in significant injury to the user. The inclusion of Cypress products in life-support systems application implies that the manufacturer assumes all risk of such use and in doing so indemnifies Cypress against all charges.

Any Source Code software and/or firmware is owned by Cypress Semiconductor Corporation Cypress and is protected by and subject to worldwide patent protection United States and foreign , United States copyright laws and international treaty provisions. Cypress hereby grants to licensee a personal, non-exclusive, non-transferable license to copy, use, modify, create derivative works of, and compile the Cypress Source Code and derivative works for the sole purpose of creating custom software and or firmware in support of licensee product to be used only in conjunction with a Cypress integrated circuit as specified in the applicable agreement. Any reproduction, modification, translation, compilation, or representation of this Source Code except as specified above is prohibited without the express written permission of Cypress.

Disclaimer CYPRESS MAKES NO WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, WITH REGARD TO THIS MATERIAL, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. Cypress reserves the right to make changes without further notice to the materials described herein. Cypress does not assume any liability arising out of the application or use of any product or circuit described herein. Cypress does not authorize its products for use as critical components in life-support systems where a malfunction or failure may reasonably be expected to result in significant injury to the user. The inclusion of Cypress’ product in a life-support systems application implies that the manufacturer assumes all risk of such use and in doing so indemnifies Cypress against all charges.

Use may be limited by and subject to the applicable Cypress software license agreement.

All products and company names mentioned in this document may be the trademarks of their respective holders.

Page 20 of 20
[+] Feedback
More datasheets: CY7C4221-15AXCT | CY7C4221-15AXC | CY7C4201-15JXCT | CY7C4251-15JXC | CY7C4241-15JXCT | CY7C4251-15AXC | CY7C4251-15AXCT | CY7C4251-10JXCT | CY7C4251-10JXC | CY7C4251-10AXI


Notice: we do not provide any warranties that information, datasheets, application notes, circuit diagrams, or software stored on this website are up-to-date or error free. The archived CY7C4251-15AC Datasheet file may be downloaded here without warranties.

Datasheet ID: CY7C4251-15AC 508096