自编程PIC18C452 OTP

You’vedecidedontheMicrochipPIC18C4528-bit

microcontroller.Itsampleprogrammemoryspaceof

32Kbytes,operatingspeedof40MHz,andextensive

setofperipheralsandI/Osfityourdesignperfectly.

Yourapplicationissmalltomediuminvolumeandso

youchoosethePIC18C452OTP.Itisastandardprod-

uctwithflexiblequantitiesandshortleadtimes.You

canappreciateaninexpensivesolutionthatallowsfor

themostrecentfirmwareandyetmaintainsarapidtime

tomarket.Yourdecisionhastheconfidenceofbeingin

familiarterritory;atsomepointintime,you’vetested

yourdesignbyinsertingaprogrammedOTPpart.The

bigquestionyounowaskyourselfis,“Howshouldwe

programallthosepartswe'reabouttobuy?”AN750Self-ProgrammingthePIC18C452OTPThisapplicationnotedescribeshowtoself-programtheAuthor:TimRovnakPIC18C452OTP(option4).ItshouldbenotedthatnotMicrochipTechnologyIncorporatedallmicrocontrollershavethisability.ThePIC18C452canprogramitselfthroughafeaturethatusesspecialINTRODUCTIONinstructionscalledTableReadsandTableWrites.You’vedecidedontheMicrochipPIC18C4528-bit