BUY STM86312 https://www.utsource.net/itm/p/5216689.html
1/4 TO 1/11-DUTY VFD CONTROLLER/DRIVER
STM86312 is a low-power, high-performance 32-bit ARM Cortex-M3 microcontroller from STMicroelectronics. It is based on the ARM Cortex-M3 core and features a wide range of peripherals, including a 10-bit ADC, two USARTs, two I2C, two SPI, two CAN, and a 12-bit DAC. The device is available in a 64-pin QFP package. Features: * 32-bit ARM Cortex-M3 core * Operating frequency up to 72 MHz * Up to 256 Kbytes of Flash memory * Up to 32 Kbytes of SRAM * 10-bit ADC * Two USARTs * Two I2C * Two SPI * Two CAN * 12-bit DAC Applications: * Automotive * Industrial control * Home appliances * Medical devices * Consumer electronics (For reference only)