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PIC16C54C PIC16F54 Migration
This document intended describe functional differences that present when migrating from PIC16C54C PIC16F54.
Note This device been designed perform parameters data sheet. been tested electrical specification designed determine conformance with these parameters. process differences manufacture this device, this device have different performance characteristics than earlier version. These differences cause this device perform differently your application than earlier version this device. user should verify that device oscillator starts performs expected. Adjusting loading capacitor values and/or Oscillator mode required. Table shows considerations that must taken into account when migrating from PIC16C54C PIC16F54.
TABLE
PIC16C54C PIC16F54 MIGRATION DIFFERENCES
Functional Differences Difference Programming algorithm change, PIC16F54 uses programming algorithm Program memory code protection, bits 11-4 unimplemented Operating regions Prog.
Legend: Issues exist with regard application circuit. Issues exist with regard user program. Programming Issues exist with regard programming device.
TABLE
PIC16C54C PIC16F54 FEATURES
Feature PIC16F54 words Flash program memory ICSPprogramming added
Legend: Issues exist with regard application circuit. Issues exist with regard user program. Programming Issues exist with regard programming device.
2003 Microchip Technology Inc.
Preliminary
DS41220A-page
PIC16F54 mainly technology process change from PIC16C54C 18-pin parts. There some changes that affect older designs looking parts. changes grouped into categories: those that affect hardware those that affect software. most cases, older design will have little problems migrating these parts.
SOFTWARE CHANGES
Flash Program Memory Code Protection
Code Protect bits program memory have changed from PIC16C54C PIC16F54. Configuration bits <11:4> (CP) unimplemented. They have been replaced with Configuration (CP).
HARDWARE CHANGES
In-Circuit Serial Programming(ICSPTM)
ICSP been added allowing users make MPLAB® programming addition MATE® PICSTART® Plus programmers. Customers also implement ICSP directly their application programming "In-Line" during manufacturing process.
Operating Regions
commercial temperature operating region been incorporated into industrial temperature region. Please voltage frequency graphs data sheet more information. "LF" operating region been incorporated into parts. Please voltage frequency graphs data sheet more information.
Process Differences
Because PIC16F54 uses newer process technology, there will subtle behavior differences between PIC16C54C PIC16F54. Before starting design migration, check data sheets verify that electrical specifications part appropriate your application.
DS41220A-page
Preliminary
2003 Microchip Technology Inc.
Note following details code protection feature Microchip devices: Microchip products meet specification contained their particular Microchip Data Sheet. Microchip believes that family products most secure families kind market today, when used intended manner under normal conditions. There dishonest possibly illegal methods used breach code protection feature. these methods, knowledge, require using Microchip products manner outside operating specifications contained Microchip's Data Sheets. Most likely, person doing engaged theft intellectual property. Microchip willing work with customer concerned about integrity their code. Neither Microchip other semiconductor manufacturer guarantee security their code. Code protection does mean that guaranteeing product "unbreakable."
Code protection constantly evolving. Microchip committed continuously improving code protection features products. Attempts break microchip's code protection feature violation Digital Millennium Copyright Act. such acts allow unauthorized access your software other copyrighted work, have right relief under that Act.
Information contained this publication regarding device applications like intended through suggestion only superseded updates. your responsibility ensure that your application meets with your specifications. representation warranty given liability assumed Microchip Technology Incorporated with respect accuracy such information, infringement patents other intellectual property rights arising from such otherwise. Microchip's products critical components life support systems authorized except with express written approval Microchip. licenses conveyed, implicitly otherwise, under intellectual property rights.
Trademarks Microchip name logo, Microchip logo, Accuron, dsPIC, KEELOQ, MPLAB, PIC, PICmicro, PICSTART, MATE PowerSmart registered trademarks Microchip Technology Incorporated U.S.A. other countries. AmpLab, FilterLab, microID, MXDEV, MXLAB, PICMASTER, SEEVAL, SmartShunt Embedded Control Solutions Company registered trademarks Microchip Technology Incorporated U.S.A. Application Maestro, dsPICDEM, dsPICDEM.net, dsPICworks, ECAN, ECONOMONITOR, FanSense, FlexROM, fuzzyLAB, In-Circuit Serial Programming, ICSP, ICEPIC, microPort, Migratable Memory, MPASM, MPLIB, MPLINK, MPSIM, PICkit, PICDEM, PICDEM.net, PICtail, PowerCal, PowerInfo, PowerMate, PowerTool, rfLAB, rfPIC, Select Mode, SmartSensor, SmartTel Total Endurance trademarks Microchip Technology Incorporated U.S.A. other countries. Serialized Quick Turn Programming (SQTP) service mark Microchip Technology Incorporated U.S.A. other trademarks mentioned herein property their respective companies. 2003, Microchip Technology Incorporated, Printed U.S.A., Rights Reserved. Printed recycled paper.
Microchip received ISO/TS-16949:2002 quality system certification worldwide headquarters, design wafer fabrication facilities Chandler Tempe, Arizona Mountain View, California October 2003 Company's quality system processes procedures PICmicro® 8-bit MCUs, KEELOQ® code hopping devices, Serial EEPROMs, microperipherals, non-volatile memory analog products. addition, Microchip's quality system design manufacture development systems 9001:2000 certified.
2003 Microchip Technology Inc.
Preliminary
DS41220A-page
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DS41220A-page
Preliminary
2003 Microchip Technology Inc.

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