AT89C52-24PI by Microchip Design and production,in CHIPS-ORIGIN ELECTRONICS CO.,LIMITED Spot sales,And can pass CHIPS-ORIGIN ELECTRONICS CO.,LIMITED Purchasing。AT89C52-24PI Price reference $ 0。AT89C52-24PI - 。You can download Chinese information、Pin map、DatasheetData sheet function specification,In the information AT89C52-24PI Detailed pin diagram and function application circuit diagram voltage and usage method and tutorial