Cypress CY8CTST200 User's Manual
Contents
1. ail Csr i om E ants T mm a hd f t g CYPRESS f PERFORM CY8CTMG200 CY8CTST200 November 7 2008 Errata Document for TrueTouch CY8CTMG200 CY8CTST200 This document describes the errata for the TrueTouch CY8CTMG200 and CY8CTST200 Details include errata trigger conditions scope of impact available workarounds and silicon revision applicability Compare this document to the device s data sheet for a complete functional description Contact your local Cypress Sales Representative if you have questions CY8CTMG200 and CY8CTST200 Errata Summary The following Errata items apply to the CY8CTMG200 and CY8CTST200 datasheets 001 47603 and 001 47602 Latch up susceptibility when maximum I O sink current exceeded 1 n 5 5 5 PROBLEM DEFINITION P1 3 P1 6 and P1 7 pins are susceptible to latch up when the I O sink current exceeds 25 mA per pin on these pins PARAMETERS AFFECTED LU Latch up Current Per JESD78A the maximum allowable latch up current per pin is 100 mA Cypress internal specification is 200 mA latch up current limit TRIGGER CONDITION S Latch up occurs when both of the following two conditions are met A The offending I O is externally connected to a voltage higher than the I O high state causing a current to flow into the pin that exceeds 25 mA B A Port1 I O adjacent P1 1 P1 4 and P1 5 respectively to the offending I O is connected to a voltage2. not affect USB communications but could cause corner case issues with USB lines rise fall matching specification Signal integrity tests were run using the Cypress development kit for the part and excellent eye was observed with supply voltage of 3 15V Figure 1 Eye Diagram D and D W E 10 FO 30 4 50 Bid 7O time ns n WORKAROUND Avoid the trigger condition by using lower tolerance voltage regulators FIX STATUS This issue will be corrected in the next new silicon revision November 7 2008 Document No 001 49988 Rev 20 Feedback CYPRESS Errata Document CY8CTMG200 CY8CTST200 eee PERFORM Document History Page Document Title Errata Document for TrueTouch CY8CTMG200 CY8CTST200 Document Number 001 49988 Orig of 2600495 See ECN 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 2008 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 Cypre
3. ke 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 7 2008 Document No 001 49988 Rev 3 Feedback
4. lower than the I O low state causing a signal that drops below Vss signal undershoot causing a current greater than 200 mA to flow out of the pin SCOPE OF IMPACT The trigger conditions outlined above exceed the maximum ratings specified in the CY8CTMG200 and CY8CTST200 datasheets 001 47603 and 001 47602 WORKAROUND Add a series resistor gt 3000 to P1 3 P1 6 and P1 7 pins to restrict current to within latch up limits FIX STATUS This issue will be corrected in the next new silicon revision The following Errata item applies only to the CY8CTMG200 48LTXI CY8CTST200 48LTXI and CY8CTMG200 OOLTXI parts on the 001 47603 and 001 47602 Datasheets 2 Does not meet USB 2 0 specification for D and D rise fall matching when supply voltage is under 3 3V n PROBLEM DEFINITION Rising to falling rate matching of the USB D and D lines has a corner case at lower supply voltages such as those under 3 3V PARAMETERS AFFECTED Rising to falling rate matching of the USB data lines TRIGGER CONDITION S Operating the VCC supply voltage at the low end of the chip s specification under 3 3V may cause a missmatch in the rising to falling rate Cypress Semiconductor Corporation 198 Champion Court San Jose CA 95134 408 943 2600 November 7 2008 Document No 001 49988 Rev Feedback me e g s PERFORM n SCOPE OF IMPACT Errata Document CY8CTMG200 CY8CTST200 CYPRESS This condition does
5. ss 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 ma
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