F452F4520.pdf

PIC单片机移植资料F452-F4520.pdfPIC18F452→PIC18F4520MigrationDEVICE MIGRATIONSThePIC18F4520is an extended architecture based on thePIC18F452family which offers many new features,includingextended instruction set,power management modes,higher speed ADC,Enhanced USART and Enhanced CCPmodules.This document is intended to describe the functional differences,configuration differences and the electricalspecification differences that are present when migrating from one device to the next.Table1summarizes the featuresthat may have migration impact on the software code developed for thePIC18F452.Table2lists the new and modifiedfeatures of thePIC18F4520that should not have any migration impact.Table3and Table4summarize the differencesin the SFRs and configuration memory,re