The ATSAMC21N18A-ANT is a microcontroller unit (MCU) manufactured by Microchip Technology. It is part of the company's AVR Cortex-M0+ based SAMC family of microcontrollers, making it suitable for complex control applications such as power supplies, motor control, and consumer products. The ATSAMC21N18A-ANT features a 32-bit processor core with a maximum operating frequency of 48MHz. It also features a comprehensive peripheral set, including four DMA channels, up to 36 I/O pins, and two serial communication interfaces. The device supports a host of advanced features such as phase locked loops (PLLs), a 12-bit analog-to-digital (ADC) converter, and an on-chip temperature sensor. The ATSAMC21N18A-ANT also features 256KB of flash memory and 32KB of RAM.