core processor ARM® Cortex®-M4 Kernel specification 32-bit single core speed 170MHz Connectivity CANbus, I2C, IrDA, LINbus, QSPI, SAI, SPI, UART/USART, USB Peripherals Brownout Detect/Reset, DMA, I2S, POR, PWM, WDT I/O count 86 Program storage capacity 512KB (512K x 8) Program memory type flash EEPROM capacity - RAM size 128K x 8 Voltage - Supply (Vcc/Vdd) 1.71V ~ 3.6V data converter A/D 42x12b; D/A 4x12b Oscillator Type internal Operating temperature -40°C ~ 85°C (TA) installation type Surface Mount Type Package/Enclosure 100-LQFP Supplier Device Packaging 100-LQFP (14x14) Basic product number STM32