STM32F103CBT7 by STMicroelectronics Design and production,in Shenzhen Jungu Technology Electronics Co., Ltd. Spot sales,And can pass Shenzhen Jungu Technology Electronics Co., Ltd. Purchasing。STM32F103CBT7 Price reference $ 9.459200。STM32F103CBT7 - 。You can download Chinese information、Pin map、DatasheetData sheet function specification,In the information STM32F103CBT7 Detailed pin diagram and function application circuit diagram voltage and usage method and tutorial