STM32F446RET6
                                         
                                     | 
                                    
                                         
                                            ARM® Cortex®-M4 STM32F4 Microcontroller IC 32-Bit Single-Core 180MHz 512KB (512K x 8) FLASH 64-LQFP (10x10)...                                         
                                        
                                            Angel Technology Electronics Co
                                         
                                        
  | 
                                
STM32F446RET6TR
                                         
                                     | 
                                    
                                         
                                            ARM® Cortex®-M4 STM32F4 Microcontroller IC 32-Bit Single-Core 180MHz 512KB (512K x 8) FLASH 64-LQFP (10x10)...                                         
                                        
                                            Shenzhen Wonder-Chip Electronics Company Limited
                                         
                                        
  | 
                                
STM32F446RET7
                                         
                                     | 
                                    
                                         
                                            ARM® Cortex®-M4 STM32F4 Microcontroller IC 32-Bit Single-Core 180MHz 512KB (512K x 8) FLASH 64-LQFP (10x10)...                                         
                                        
                                            WONDERFUL SEMICONDUCTOR(HONG KONG)CO.,LIMITED
                                         
                                        
  | 
                                
STM32F446RET6
                                         
                                     | 
                                    
                                         
                                            ARM® Cortex®-M4 STM32F4 Microcontroller IC 32-Bit Single-Core 180MHz 512KB (512K x 8) FLASH 64-LQFP (10x10)...                                         
                                        
                                            Beijing Silk Road Enterprise Management Services Co.,LTD
                                         
                                         | 
                                
STM32F446RET6
                                         
                                     | 
                                    
                                         
                                            ARM® Cortex®-M4 STM32F4 Microcontroller IC 32-Bit Single-Core 180MHz 512KB (512K x 8) FLASH 64-LQFP (10x10)...                                         
                                        
                                            ZhongHao Industry Limited
                                         
                                        
  | 
                                
