M29F400BB90M1 by ST Design and production,in HongKong RichShine Technology Co., Limited Spot sales,And can pass HongKong RichShine Technology Co., Limited Purchasing。M29F400BB90M1 Price reference $ 0。M29F400BB90M1 - 。You can download Chinese information、Pin map、DatasheetData sheet function specification,In the information M29F400BB90M1 Detailed pin diagram and function application circuit diagram voltage and usage method and tutorial