PIC16C54C/55A/56A/57C/58B
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1 PIC16C54C/55A/56A/57C/58B (Rev. A Silicon) Errata Sheet The PIC16C54C/55A/56A/57C/58B (Rev. A Silicon ONLY) parts you have received conform functionally to the PIC16C5X Device Data Sheet (DS30453D), except for the anomalies described below. All the problems listed here will be addressed in future revisions of the PIC16C54C/55A/56A/57C/58B silicon. 1. Module: RESET The minimum specification for the MCLR must be met in order to RESET the PIC16C54C/55A/56A/57C/58B. If a MCLR pulse occurs that is less than the minimum specification (parameter #30), improper device operation can occur. If the minimum specification cannot be met, then an external circuit must be used to ensure that any pulse width, less than the specification, will be filtered before it reaches the MCLR pin. Work around A possible circuit is shown in Figure 1. Proper design validation needs to be done to ensure desired operation over the applications operating conditions. FIGURE 1: MCLR EXTERNAL CIRCUIT VDD R1 C1 R2 MCLR PIC16C54C/ 55A/56A/57C/ 58B 4.7KW 0.0µ1F R2 < R1 < 10KW C1 0.1µF = 100Ω Note: As with any windowed EPROM device, please cover the window at all times, except when erasing Microchip Technology Inc. DS80102B-page 1
2 Clarifications/Corrections to the Data Sheet: In the Device Data Sheet (DS30453D), the following clarifications and corrections should be noted. None DS80102B-page Microchip Technology Inc.
3 APPENDIX A: REVISION HISTORY Rev A Document (3/2001) First revision of this document. Rev B Document (3/2002) Removed Device Data Sheet anomalies which were corrected in new revision DS30453D Microchip Technology Inc. DS80102B-page 3
4 NOTES: DS80102B-page Microchip Technology Inc.
5 Note the following details of the code protection feature on PICmicro MCUs. The PICmicro family meets the specifications contained in the Microchip Data Sheet. Microchip believes that its family of PICmicro microcontrollers is one of the most secure products 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 PICmicro microcontroller in a manner outside the operating specifications contained in the data sheet. The person doing so may be 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 product. If you have any further questions about this matter, please contact the local sales office nearest to you. Information contained in this publication regarding device applications and the like is intended through suggestion only and may be superseded by updates. It is your responsibility to ensure that your application meets with your specifications. No representation or warranty is given and no liability is assumed by Microchip Technology Incorporated with respect to the accuracy or use of such information, or infringement of patents or other intellectual property rights arising from such use or otherwise. Use of Microchip s products as critical components in life support systems is not authorized except with express written approval by Microchip. No licenses are conveyed, implicitly or otherwise, under any intellectual property rights. Trademarks The Microchip name and logo, the Microchip logo, FilterLab, KEELOQ, microid, MPLAB, PIC, PICmicro, PICMASTER, PICSTART, PRO MATE, SEEVAL and The Embedded Control Solutions Company are registered trademarks of Microchip Technology Incorporated in the U.S.A. and other countries. dspic, ECONOMONITOR, FanSense, FlexROM, fuzzylab, In-Circuit Serial Programming, ICSP, ICEPIC, microport, Migratable Memory, MPASM, MPLIB, MPLINK, MPSIM, MXDEV, PICC, PICDEM, PICDEM.net, rfpic, Select Mode and Total Endurance are trademarks of Microchip Technology Incorporated in the U.S.A. Serialized Quick Turn Programming (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. 2002, Microchip Technology Incorporated, Printed in the U.S.A., All Rights Reserved. Printed on recycled paper. Microchip received QS-9000 quality system certification for its worldwide headquarters, design and wafer fabrication facilities in Chandler and Tempe, Arizona in July The Company s quality system processes and procedures are QS-9000 compliant for its PICmicro 8-bit MCUs, KEELOQ code hopping devices, Serial EEPROMs and microperipheral products. In addition, Microchip s quality system for the design and manufacture of development systems is ISO 9001 certified Microchip Technology Inc. DS80102B - page 5
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