Cypress CY2071A User's Manual
Contents
1. 3 ey n M L So h F 7 CYPRESS PERFORM Wi _ SSSS a 2 o me CY2071A CY2907 Clock Generators AN2701 The Cypress CY2071A and CY2907 family of products are discontinued and should no longer be used for new designs The CY22381 is a 3 3V pin for pin compatible replacement for the CY2071A and should be used in all new designs and legacy device modifications There is no option for a 5V VDD on the CY22381 There is no direct pin for pin replacement for the CY2907 The CY22392 is the closest match in functional ity to the CY2907 Introduction The CY22381 shown in Figure 1 is programmed using CyClocks RT that is part of the CyberClocks software suite The CY2071A shown in Figure 2 and CY2907 family of devices are programmed using the PC driven CyClocks soft ware that is also part of the CyberClocks software suite CyClocks software stores the program file as an entry file that uses a text file with an ent file extension CyClocks allows the user to create an EPROM vector from an existing entry file The entry file or EPROM vector is not compatible with the CY22381 CyClocks RT software and cannot be imported or used to create a CY22381 programmable JEDEC file Figure 1 CLEC GND TALIN CLKA O GND TALIM ATALOUT Ch 2 cy22381 7 mm 3 i To program a compatible CY22381 the user must take the input and output frequencies and manually enter the data into the CyClocks RT softwa2. TIES 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 November 12 2007 Document No 001 14530 Rev A 2 Feedback
3. l 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 This 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 WARRAN
4. re The header of an existing entry file may contain useful data that helps the user in manually programming the CY22381 device A case may arise where all of the output frequencies cannot be mapped into the CY22381 device This is more prevalent when using the fre quency select options and is dependant on the difference in PLL technology Contact Cypress Applications for assistance in converting existing files CY22381 Pinout November 12 2007 Document No 001 14530 Rev A 1 Feedback AN2701 In March of 2007 Cypress recataloged all of its Application Notes using a new documentation number and revision code This new documentation number and revision code 001 xxxxx beginning with rev located in the footer of the document will be used in all subsequent revisions All trademarks or registered trademarks referenced herein are the property of their respective owners Cypress Semiconductor 198 Champion Court San Jose CA 95134 1709 Phone 408 943 2600 Fax 408 943 4730 http Awww cypress com Cypress Semiconductor Corporation 2006 2007 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 critica
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