BUY STM32F103R8T6 https://www.utsource.net/itm/p/856988.html
Performance line, ARM-based 32-bit MCU with Flash, USB, CAN, seven 16-bit timers, two ADCs and nine communication interfaces
Description: STM32F103R8T6 is a 64-pin low-power ARM Cortex-M3 microcontroller with a maximum clock frequency of 72 MHz. It features 128KB of Flash memory, 20KB of SRAM, and a wide range of peripherals. Features: ARM Cortex-M3 core with 72 MHz maximum clock frequency 128KB of Flash memory 20KB of SRAM Up to 37 GPIOs Up to 3 USARTs Up to 2 SPIs Up to 2 I2Cs Up to 2 12-bit ADCs Up to 3 timers Up to 2 CANs Up to 2 DACs Up to 4 general-purpose DMA channels Up to 2 independent watchdogs Up to 8 interrupts/exceptions Up to 4 low-power modes Up to 2 USB 2.0 Full-speed controllers Up to 2 I2Ss Up to 2 SDIOs Up to 2 FSMCs Up to 2 CRCs Up to 2 AESs Up to 2 RNGs Up to 2 DCMI Application: The STM32F103R8T6 is suitable for a wide range of applications, such as industrial, medical, consumer, and automotive applications. It can be used for motor control, power management, digital audio, and other embedded applications. (For reference only)