MCP9800/1/2/3 MCP9800/1/2/3 Rev. A Silicon/Data Sheet Errata The MCP9800/1/2/3 parts you have received conform functionally to the MCP9800/1/2/3 Data Sheet (DS21909B), except for the anomalies described below. All of the issues listed here will be addressed in future revisions of the MCP9800/1/2/3 silicon. Contact Microchip for the latest Silicon fix. Clarification/Corrections to the Data Sheet: The following typographic corrections and clarifications are to be noted for the latest version of the device data sheet (DS21909B): None at this time. 1. Module: Device Internal Latch-up at Higher Temperatures The MCP9800/1/2/3 devices may latch-up during I2C™ communication at high temperatures. This is caused by the internal I2C interface slew control circuit. At temperatures >80°C (typically), High-to-Low transition <500 ns on the SDA or SCL lines causes the slew control circuit to latch-up. Work around Connect a capacitor across the SDA and SCL pull-up resistors so that the SDA and SCL fall time is >500 ns. For example, use 5 k/0.01 µf. Date Codes that pertain to this issue: This issue concerns the devices produced on or before 718. This issue is fixed in devices with a date code of 721. 2. Module: POR Active During Oneshot Mode At high temperatures the MCP9800/1/2/3 may reset while waking up from the Oneshot mode. All registers may be set at the power-up default states. Work around Shutdown and wake the device using the Shutdown bit in the Configuration register. Date Codes that pertain to this issue: This issue concerns the devices produced on or before 718. This issue is fixed in devices with a date code of 721. 2007-2011 Microchip Technology Inc. DS80331B-page 1 MCP9800/1/2/3 APPENDIX A: REVISION HISTORY Revision B (8/2011) Specifies the device date codes that pertain to the issues described in this errata. Revision A (7/2007) • Device Internal latch-up at higher temperature. • POR active during Oneshot mode. DS80331B-page 2 2007-2011 Microchip Technology Inc. Note the following details of the code protection feature on Microchip devices: • Microchip products meet the specification contained in their particular Microchip Data Sheet. • Microchip believes that its family of products is one of the most secure families of its kind on the market today, when used in the intended manner and under normal conditions. • There are dishonest and possibly illegal methods used to breach the code protection feature. All of these methods, to our knowledge, require using the Microchip products in a manner outside the operating specifications contained in Microchip’s Data Sheets. Most likely, the person doing so is engaged in theft of intellectual property. • Microchip is willing to work with the customer who is concerned about the integrity of their code. • Neither Microchip nor any other semiconductor manufacturer can guarantee the security of their code. Code protection does not mean that we are guaranteeing the product as “unbreakable.” Code protection is constantly evolving. We at Microchip are committed to continuously improving the code protection features of our products. Attempts to break Microchip’s code protection feature may be a violation of the Digital Millennium Copyright Act. If such acts allow unauthorized access to your software or other copyrighted work, you may have a right to sue for relief under that Act. Information contained in this publication regarding device applications and the like is provided only for your convenience and may be superseded by updates. It is your responsibility to ensure that your application meets with your specifications. MICROCHIP MAKES NO REPRESENTATIONS OR WARRANTIES OF ANY KIND WHETHER EXPRESS OR IMPLIED, WRITTEN OR ORAL, STATUTORY OR OTHERWISE, RELATED TO THE INFORMATION, INCLUDING BUT NOT LIMITED TO ITS CONDITION, QUALITY, PERFORMANCE, MERCHANTABILITY OR FITNESS FOR PURPOSE. Microchip disclaims all liability arising from this information and its use. Use of Microchip devices in life support and/or safety applications is entirely at the buyer’s risk, and the buyer agrees to defend, indemnify and hold harmless Microchip from any and all damages, claims, suits, or expenses resulting from such use. No licenses are conveyed, implicitly or otherwise, under any Microchip intellectual property rights. Trademarks The Microchip name and logo, the Microchip logo, dsPIC, KEELOQ, KEELOQ logo, MPLAB, PIC, PICmicro, PICSTART, PIC32 logo, rfPIC and UNI/O are registered trademarks of Microchip Technology Incorporated in the U.S.A. and other countries. FilterLab, Hampshire, HI-TECH C, Linear Active Thermistor, MXDEV, MXLAB, SEEVAL and The Embedded Control Solutions Company are registered trademarks of Microchip Technology Incorporated in the U.S.A. Analog-for-the-Digital Age, Application Maestro, chipKIT, chipKIT logo, CodeGuard, dsPICDEM, dsPICDEM.net, dsPICworks, dsSPEAK, ECAN, ECONOMONITOR, FanSense, HI-TIDE, In-Circuit Serial Programming, ICSP, Mindi, MiWi, MPASM, MPLAB Certified logo, MPLIB, MPLINK, mTouch, Omniscient Code Generation, PICC, PICC-18, PICDEM, PICDEM.net, PICkit, PICtail, REAL ICE, rfLAB, Select Mode, Total Endurance, TSHARC, UniWinDriver, WiperLock and ZENA are trademarks of Microchip Technology Incorporated in the U.S.A. and other countries. SQTP is a service mark of Microchip Technology Incorporated in the U.S.A. All other trademarks mentioned herein are property of their respective companies. © 2007-2011, Microchip Technology Incorporated, Printed in the U.S.A., All Rights Reserved. Printed on recycled paper. ISBN: 978-1-61341-512-2 Microchip received ISO/TS-16949:2009 certification for its worldwide headquarters, design and wafer fabrication facilities in Chandler and Tempe, Arizona; Gresham, Oregon and design centers in California and India. The Company’s quality system processes and procedures are for its PIC® MCUs and dsPIC® DSCs, KEELOQ® code hopping devices, Serial EEPROMs, microperipherals, nonvolatile memory and analog products. In addition, Microchip’s quality system for the design and manufacture of development systems is ISO 9001:2000 certified. 2007-2011 Microchip Technology Inc. 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