STM32L431RBT6，integrated circuit embedded microcontroller stmicroelectronics series STM32L4 parcel tray Core processor Arm cortex -M4 Magnetic core volume 32-bit single core speed 80 MHz Connectivity CANbus、I C、IrDA、LINbus、MMC/SD、QSPI、SAI、SPI、SWPMI、UART/USART ancillary equipment Power-down detection/reset, DMA, PWM, WDT Input quantity fifty-two Program memory size 128KB (128K x 8) Program memory type glitter EEPROM size - RAM size 64K x 8 Power supply voltage (Vcc/Vdd) 1.71 ~ 3.6 volts data converter a/D 16x 12b； D/A 2x12b Oscillator type internal Working temperature -40 degrees Celsius to 85 degrees Celsius Installation type Surface adhesion mode Package/box 64-lead LQFP package Supplier package 64-lead LQFP package (10x10)