The MICROCHIP TECH. part ATSAME54P20A-AU is a powerful 32-bit ARM Cortex M4F RISC microcontroller unit (MCU) with 1MB of Flash memory. Operating at 3.3V, this MCU is housed in a 128-pin TQFP package and is supplied in a convenient tray for easy handling. Ideal for a wide range of applications, the ATSAME54P20A-AU offers high performance and versatility in a compact and reliable package.