CY7C135-25JXI

CY7C135-25JXI Datasheet

CY7C135, CY7C135A CY7C1342

Part	Datasheet
CY7C135-25JXI	CY7C135-25JXI (pdf)

Related Parts	Information
CY7C135-25JXC	CY7C135-25JXC

PDF Datasheet Preview
CY7C135, CY7C135A CY7C1342 4K x 8 Dual-Port Static RAM and 4K x 8 Dual-Port SRAM with Semaphores • True dual-ported memory cells, which allow simultaneous reads of the same memory location • 4K x 8 organization • micron CMOS for optimum speed and power • High speed access 15 ns • Low operating power ICC = 160 mA max • Fully asynchronous operation • Automatic power down • Semaphores included on the 7C1342 to permit software handshaking between ports • Available in 52-pin PLCC • Pb-free packages available Logic Block Diagram R/WL CEL OEL Functional Description The CY7C135/135A[1] and CY7C1342 are high speed CMOS 4K x 8 dual-port static RAMs. The CY7C1342 includes semaphores that provide a means to allocate portions of the dual-port RAM or any shared resource. Two ports are provided permitting independent, asynchronous access for reads and writes to any location in memory. Application areas include interprocessor/multiprocessor designs, communications status buffering, and dual-port video/graphics memory. Each port has independent control pins chip enable CE , read or write enable R/W , and output enable OE . The CY7C135/135A is suited for those systems that do not require on-chip arbitration or are intolerant of wait states. Therefore, the user must be aware that simultaneous access to a location is possible. Semaphores are offered on the CY7C1342 to assist in arbitrating between ports. The semaphore logic is comprised of eight shared latches. Only one side can control the latch semaphore at any time. Control of a semaphore indicates that a shared resource is in use. An automatic power down feature is controlled independently on each port by a chip enable CE pin or SEM pin CY7C1342 only . The CY7C135/135A and CY7C1342 are available in 52-pin PLCC. R/WR CER OER I/O7L I/O0L A11L A0L I/O CONTROL I/O CONTROL ADDRESS DECODER MEMORY ARRAY ADDRESS DECODER I/O7R I/O0R A11R A0R 7C1342 only SEML CEL OEL R/WL SEMAPHORE ARBITRATION 7C1342 only CER OER R/WR 7C1342 only SEMR Note CY7C135 and CY7C135A are functionally identical • San Jose, CA 95134-1709 • 408-943-2600 [+] Feedback CY7C135, CY7C135A CY7C1342 Selection Guide Parameter 7C135-15 7C135-20 7C135/135A-25 7C135-35 7C1342-15 7C1342-20 7C1342-25 7C1342-35 7C135-55 7C1342-55 Unit Maximum Access Time Maximum Operating Current Commercial Maximum Standby Current for Commercial ISB1 Pin Configurations Ordering Information 4K x8 Dual-Port SRAM Speed ns 15 20 25 35 55 Ordering Code CY7C135-15JXC CY7C135-25JXC Package Name J69 Package Type 52-Pin Plastic Leaded Chip Carrier 52-Pin Pb-Free Plastic Leaded Chip Carrier 52-Pin Plastic Leaded Chip Carrier 52-Pin Plastic Leaded Chip Carrier 52-Pin Pb-Free Plastic Leaded Chip Carrier 52-Pin Plastic Leaded Chip Carrier 52-Pin Pb-Free Plastic Leaded Chip Carrier 52-Pin Plastic Leaded Chip Carrier 52-Pin Plastic Leaded Chip Carrier 52-Pin Plastic Leaded Chip Carrier 52-Pin Plastic Leaded Chip Carrier Package Diagram Figure 52-Pin Pb-Free Plastic Leaded Chip Carrier J69 Operating Range Commercial Commercial Industrial Commercial Industrial Commercial Industrial 51-85004-*A Page 11 of 12 [+] Feedback CY7C135, CY7C135A CY7C1342 Document History Page Document Title CY7C135/CY7C135A/CY7C1342 4K x 8 Dual Port Static RAM and 4K x 8 Dual Port SRAM with Semaphores Document Number 38-06038 ECN No. Orig. of Submission Change Description of Change 110181 10/21/01 Change from Spec number 38-00541 to 38-06038 122288 12/27/02 Power up requirements added to Maximum Ratings Information 236763 SEE ECN Removed cross information from features section 393413 See ECN Added Pb-Free Logo Added Pb-Free parts to ordering information: CY7C135-15JXC, CY7C135-25JXC 2623540 VKN/PYRS 12/17/08 Added CY7C135A parts Removed CY7C1342 from the ordering information table 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.com/sales. Products PSoC Clocks & Buffers Wireless Memories Image Sensors psoc.cypress.com clocks.cypress.com wireless.cypress.com memory.cypress.com image.cypress.com PSoC Solutions General psoc.cypress.com/solutions Low Power/Low Voltage psoc.cypress.com/low-power Precision Analog psoc.cypress.com/precision-analog LCD Drive psoc.cypress.com/lcd-drive CAN 2.0b psoc.cypress.com/can psoc.cypress.com/usb 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 12 of 12 [+] Feedback

PDF Datasheet Preview

CY7C135, CY7C135A CY7C1342
4K x 8 Dual-Port Static RAM and 4K x 8 Dual-Port SRAM with Semaphores
• True dual-ported memory cells, which allow simultaneous reads of the same memory location
• 4K x 8 organization
• micron CMOS for optimum speed and power
• High speed access 15 ns
• Low operating power ICC = 160 mA max
• Fully asynchronous operation
• Automatic power down
• Semaphores included on the 7C1342 to permit software
handshaking between ports
• Available in 52-pin PLCC
• Pb-free packages available

Logic Block Diagram

R/WL CEL OEL

Functional Description

The CY7C135/135A[1] and CY7C1342 are high speed CMOS 4K x 8 dual-port static RAMs. The CY7C1342 includes semaphores that provide a means to allocate portions of the dual-port RAM or any shared resource. Two ports are provided permitting independent, asynchronous access for reads and writes to any location in memory. Application areas include interprocessor/multiprocessor designs, communications status buffering, and dual-port video/graphics memory.

Each port has independent control pins chip enable CE , read or write enable R/W , and output enable OE . The CY7C135/135A is suited for those systems that do not require on-chip arbitration or are intolerant of wait states. Therefore, the user must be aware that simultaneous access to a location is possible. Semaphores are offered on the CY7C1342 to assist in arbitrating between ports. The semaphore logic is comprised of eight shared latches. Only one side can control the latch semaphore at any time. Control of a semaphore indicates that a shared resource is in use. An automatic power down feature is controlled independently on each port by a chip enable CE pin or SEM pin CY7C1342 only .

The CY7C135/135A and CY7C1342 are available in 52-pin PLCC.

R/WR

CER OER

I/O7L I/O0L

A11L A0L

I/O CONTROL

I/O CONTROL

ADDRESS DECODER

MEMORY ARRAY

ADDRESS DECODER

I/O7R I/O0R

A11R A0R
7C1342 only SEML

CEL OEL R/WL

SEMAPHORE ARBITRATION 7C1342 only

CER OER R/WR
7C1342 only SEMR

Note CY7C135 and CY7C135A are functionally identical
• San Jose, CA 95134-1709
• 408-943-2600
[+] Feedback

CY7C135, CY7C135A CY7C1342

Selection Guide

Parameter
7C135-15 7C135-20 7C135/135A-25 7C135-35 7C1342-15 7C1342-20 7C1342-25 7C1342-35
7C135-55 7C1342-55

Unit

Maximum Access Time

Maximum Operating Current Commercial

Maximum Standby Current for Commercial

ISB1

Pin Configurations
Ordering Information
4K x8 Dual-Port SRAM

Speed ns 15 20 25
35 55
Ordering Code CY7C135-15JXC CY7C135-25JXC

Package Name J69

Package Type 52-Pin Plastic Leaded Chip Carrier 52-Pin Pb-Free Plastic Leaded Chip Carrier 52-Pin Plastic Leaded Chip Carrier 52-Pin Plastic Leaded Chip Carrier 52-Pin Pb-Free Plastic Leaded Chip Carrier 52-Pin Plastic Leaded Chip Carrier 52-Pin Pb-Free Plastic Leaded Chip Carrier 52-Pin Plastic Leaded Chip Carrier 52-Pin Plastic Leaded Chip Carrier 52-Pin Plastic Leaded Chip Carrier 52-Pin Plastic Leaded Chip Carrier

Package Diagram

Figure 52-Pin Pb-Free Plastic Leaded Chip Carrier J69

Operating Range

Commercial

Commercial

Industrial

Commercial Industrial Commercial Industrial
51-85004-*A

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CY7C135, CY7C135A CY7C1342

Document History Page

Document Title CY7C135/CY7C135A/CY7C1342 4K x 8 Dual Port Static RAM and 4K x 8 Dual Port SRAM with Semaphores Document Number 38-06038

ECN No.

Orig. of Submission

Change

Description of Change
110181
10/21/01 Change from Spec number 38-00541 to 38-06038
122288
12/27/02 Power up requirements added to Maximum Ratings Information
236763

SEE ECN Removed cross information from features section
393413

See ECN Added Pb-Free Logo
Added Pb-Free parts to ordering information:

CY7C135-15JXC, CY7C135-25JXC
2623540 VKN/PYRS 12/17/08 Added CY7C135A parts
Removed CY7C1342 from the ordering information table

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.com/sales.

Products PSoC Clocks & Buffers Wireless Memories Image Sensors
psoc.cypress.com clocks.cypress.com wireless.cypress.com memory.cypress.com image.cypress.com

PSoC Solutions

General
psoc.cypress.com/solutions

Low Power/Low Voltage
psoc.cypress.com/low-power

Precision Analog
psoc.cypress.com/precision-analog

LCD Drive
psoc.cypress.com/lcd-drive

CAN 2.0b
psoc.cypress.com/can
psoc.cypress.com/usb

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.

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[+] Feedback

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 CY7C135-25JXI Datasheet file may be downloaded here without warranties.

Datasheet ID: CY7C135-25JXI 507974