Nuvoton NuMicro® M031 series is 32-bit microcontrollers based on Arm® Cortex®-M0 CPU with 32-bit hardware multiplier/divider. It features 1.8V ~ 3.6V operating voltage, 5V I/O tolerant, running up to 48/72 MHz within - 40~105 ℃ . 

M031 series provides a solution for the applications that need 1.8V low-voltage interface connection with enhanced fast 2 MSPS conversion rate 12-bit ADC , comparators and up-to 24-ch 96/144 MHz PWM control, providing a fast and precise data conversion for the voltage, current, and sensor data, then fast response control to the external device. Additionally, M031 series also provides plenty of peripherals included Universal Serial Control Interface ( USCI ) can be set as UART / SPI / I²C flexibly, up to 10 sets of UART , 4 sets of SPI , 4 set I²C , 1-wire UART interface for data communication between master and slave devices.

M031 series provides Flash size from 16 KB to 512 KB , SRAM size from 2 KB to 96 KB . Supported packages from small form factor TSSOP20, TSSOP28, QFN33, LQFP48 to LQFP 64 and LQFP128 with pin-compatible for different part number makes the system design and change parts easily.

All new M031 series products support the following advanced features.

• Support single-wire UART half-duplex mode with bit rate up to 6 Mbps
• Support UART(9600 bps) in power-down mode by Internal 38.4 kHz LIRC. Collaborate with 16 byte FIFO to support wake-up function (receiving up to 15 bytes in power-down mode)
• Support High-speed SPI (1.8V~3.6V) with 4x32 byte FIFO & Tx / Rx PDMA function (Master mode 24MHz/ Slave mode 16MHz)
• Pre-stored built-in bandgap voltage value. It can be used to estimate bandgap voltage value at any temperature between -40°C ~ +105°C. The voltage accuracy can be within 1%.
• PWM input clock source can be from PLL (frequency up to 96/144 MHz). PWM frequency can be up to 375 kHz (at 96 MHz clock source). PWM supports capture mode & PDMA. Pulse count value can be directly stored into SRAM using PDMA function. Support to measure the minimum pulse width down to 0.5 us.

Part Numbers with M032 series are all based on M031 series and enhanced with crystal-less USB 2.0 full-speed device feature for USB related application.

For the development, Nuvoton provides the NuMaker evaluation boards and Nuvoton Nu-Link debugger. 3^rd Party IDE is supported such as Keil MDK, IAR EWARM, Eclippse IDE with GNU GCC compilers etc.

Target Application:

• Laser Distance Meter
• Air Detector/Cleaner
• Mobile LCD Panel Controller
• IoT Sensing Device
• Micro Printer
• Gaming Keyboard and Mouse
• WPC Wireless Charger

Key Features: