Datasheet 16f877a

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PICmicro™ Mid-Range MCU Family Reference Manual

© 1997 Microchip Technology Inc.

December 1997 /DS33023A

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Internationally Recognized Quality System Certifications
Microchip’s Quality System embodies the requirements of ISO9001:1994. Our Microchip Chandler and Tempe Design and Manufacturing facilities have been certified to ISO 9001. The Microchip Kaohsiung Test facility, andprimary Assembly houses have been certified to ISO 9002. ISO certification plans are in-process for an estimated certification grant by year-end 1997. In addition, Microchip has received numerous customer certifications, including a Delco issued certificate of compliance to AEC-A100/QS9000.

Microchip received ISO 9001 Quality System certification for its worldwide headquarters, design, and waferfabrication facilities in January, 1997. Our field-programmable PICmicro™ 8-bit MCUs, Serial EEPROMs, related specialty memory products and development systems conform to the stringent quality standards of the International Standard Organization (ISO).

“All rights reserved. Copyright © 1997, Microchip Technology Incorporated, USA. Information contained in this publication regarding deviceapplications and the like is intended through suggestion only and may be superseded by updates. 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 componentsin 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. The Microchip logo and name are registered trademarks of Microchip Technology Inc. in the U.S.A. and other countries. All rights reserved. All other trademarks mentioned herein are the property of their respectivecompanies. No licenses are conveyed, implicitly or otherwise, under any intellectual property rights.”

Trademarks The Microchip name, logo, PIC, KEELOQ, PICMASTER, PICSTART, PRO MATE, and SEEVAL are registered trademarks of Microchip Technology Incorporated in the U.S.A. MPLAB, PICmicro, ICSP and In-Circuit Serial Programming are trademarks of Microchip Technology Incorporated. SerializedQuick-Turn Production is a Service Mark of Microchip Technology Incorporated. All other trademarks mentioned herein are property of their respective companies.

December 1997 /DS33023A

© 1997 Microchip Technology Inc.

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Table of Contents
PAGE
SECTION 1. INTRODUCTION 1-1
Introduction.......................................................................................................................................................1-2 Manual Objective ..............................................................................................................................................1-3 Device Structure ...............................................................................................................................................1-4 Development Support.......................................................................................................................................1-6 Device Varieties ...............................................................................................................................................1-7 Style and Symbol Conventions......................................................................................................................1-12 Related Documents ........................................................................................................................................1-14 Related Application Notes ..............................................................................................................................1-17 Revision History...