The MICROCHIP TECH. part ATSAMD21G17A-AU is a powerful 32-bit ARM Cortex M0+ RISC microcontroller unit (MCU) with a flash memory capacity of 128KB. Operating at a voltage of 3.3V, this MCU is designed for a wide range of applications, offering a balance between high performance and power efficiency. Housed in a 32-pin TQFP package, the ATSAMD21G17A-AU is suitable for use in various devices and systems. This product is sold in trays for convenient storage and handling.