AT89LP6440-20PU by Microchip Design and production,in Shenzhen New Yihui Technology Co., Ltd Spot sales,And can pass Shenzhen New Yihui Technology Co., Ltd Purchasing。AT89LP6440-20PU Price reference $ 2.980000。AT89LP6440-20PU - 。You can download Chinese information、Pin map、DatasheetData sheet function specification,In the information AT89LP6440-20PU Detailed pin diagram and function application circuit diagram voltage and usage method and tutorial