The ATSAMD21G18A-MUT from Microchip Technology is low-power, 32-bit Cortex-M0+ MCU with advanced analog and PWM microcontroller with 256KB (256K x 8) flash program memory, 32K x 8 RAM size and 38 I/O general-purpose I/O pins. The ATSAMD21G18A-MUT microcontroller has 14-channel 12-bit analog-to-digital (A/D) converter and one 10-bit digital-to-analog (D/A) converter. This microcontroller operates at a maximum frequency of 48MHz with wide operating voltage of 1.62 to 3.6V. Operating temperature range is from -40°C to 85°C.