ATTINY45-20PU by Microchip Design and production,in CHIPS-ORIGIN ELECTRONICS CO.,LIMITED Spot sales,And can pass CHIPS-ORIGIN ELECTRONICS CO.,LIMITED Purchasing。ATTINY45-20PU Price reference $ 1.591200。ATTINY45-20PU - 。You can download Chinese information、Pin map、DatasheetData sheet function specification,In the information ATTINY45-20PU Detailed pin diagram and function application circuit diagram voltage and usage method and tutorial