如何实现ICSP™的使用PIC12C5XX的OTP微控制器

INTRODUCTION

Thetechnicalbriefdescribeshowtoimplementin-cir-

cuitserialprogramming(ICSP™)usingthe

PIC12C5XXOTPPICmicro™MCU.

ICSPisasimplewaytomanufactureyourboardwith

anunprogrammedPICmicroandprogramthedevice

justbeforeshippingtheproduct.Programmingthe

PIC12C5XXMCUin-circuithasmanyadvantagesfor

developingandmanufacturingyourproduct.

•Reducesinventoryofproductswithold

firmware.WithICSP,theusercanmanufacture

productwithoutprogrammingthePICmicroMCU.

ThePICmicrowillbeprogrammedjustbeforethe

productisshipped.

•ICSPinproduction.Newsoftwarerevisionsor

additionalsoftwaremodulescanbeprogrammed

duringproductionintothePIC12C5XXMCU.

•ICSPinthefield.Evenafteryourproducthas

beensold,aservicemancanupdateyour

programwithnewprogrammodules.

•Onehardwarewithdifferentsoftware.ICSP

allowstheusertohaveonehardware,whereas

thePIC12C5XXMCUcanbeprogrammedwith

differenttypesofsoftware.

•Lastminuteprogramming.Lastminutepro-

grammingcanalsofacilitatequickturnaroundsoncustomordersforyourproducts.TB017HowtoImplementICSPUsingPIC12C5XXOTPMCUscustomordersforyourproducts.Author:ThomasSchmidtMicrochipTechnologyInc.IN-CIRCUITSERIALPROGRAMMINGToimplementICSPintoanapplication,theuserneedstoconsiderthreemaincomponentsofanICSPsystem:INTRODUCTIONApplicationCircuit,Prog