ATTINY25-20MFR by Microchip Design and production,in GUI XIN Group (Hong Kong) Limited Spot sales,And can pass GUI XIN Group (Hong Kong) Limited Purchasing。ATTINY25-20MFR Price reference $ 1.022000。ATTINY25-20MFR - 。You can download Chinese information、Pin map、DatasheetData sheet function specification,In the information ATTINY25-20MFR Detailed pin diagram and function application circuit diagram voltage and usage method and tutorial