PICmicro单片机在电路串行编程（ICSP™的）参数校准

Manyembeddedcontrolapplications,wheresensor

offsets,slopesandconfigurationinformationaremea-

suredandstored,requireacalibrationstep.Tradition-

ally,potentiometersorSerialEEPROMdevicesare

usedtosetupandstorethiscalibrationinformation.

Thisapplicationnotewillshowhowtoconstructapro-

grammingjigthatwillreceivecalibrationparameters

fromtheapplicationmid-rangePICmicro™microcon-

trollers(MCU)andprogramthisinformationintothe

applicationbaselinePICmicrousingtheIn-Circuit

SerialProgramming(ICSP™)protocol.Thismethod

usesthePIC16CXXXIn-CircuitSerialProgramming

algorithmofthe14-bitcoremicrocontrollers.AN656In-CircuitSerialProgramming(ICSP)ofCalibrationParametersUsingaPICmicroMicrocontrollerPROGRAMMINGFIXTUREAuthor:JohnDayMicrochipTechnologyInc.Aprogrammingxtureisneededtoassistwiththeselfprogrammingoperation.Thisistypicallyasmallre-usablemodulethatplugsintotheapplicationPCBINTRODUCTIONbeingcalibrated.Onlyvepinconnectionsareneeded