nRF24xx与单片机共用晶振的实现方法

nRF24xx与单片机共用晶振的实现方法WHITEPAPERSharingcrystalwithaMCU1.PrefaceThiswhitepapergivesguidelinesonhowacrystalcanbesharedbetweenannRFtransceiverfromNordicSemiconductorandanexternalmicrocontrollerunit(MCU).ThenRF24L01hasbeenusedasanexampleinthispaper,andalldatahavealsobeentakenfromthedatasheetofthisdevice.IncaseothernRFdevicesaretobeused,allnecessarydatacanbefoundinthecorrespondingdatasheet.2.CrystalfromMCUusedtofeednRF24L01InthissetuptheMCUcontrolsthestartupofcrystal,feedtheclocktonRFdevice,andalsospecifymostofthecrystalrequirements.Thisistherecommendedsetup,duetotheadvantageslistedattheendofthischapter.Figure1:MCUfee