CC2540F256RHAR by Texas Instruments(TI) Design and production,in Ruishengda Information Technology Co., Limited Spot sales,And can pass Ruishengda Information Technology Co., Limited Purchasing。CC2540F256RHAR Price reference $ 2.380700。CC2540F256RHAR - 。You can download Chinese information、Pin map、DatasheetData sheet function specification,In the information CC2540F256RHAR Detailed pin diagram and function application circuit diagram voltage and usage method and tutorial