The ATSAME51J19A-MU is a microcontroller from Microchip's ATSAME51J family of 32-bit microcontrollers. It features an ARM Cortex-M4 core running at up to 150 MHz, up to 512 KB of Flash memory, 32 KB of RAM, a 12-bit ADC, and up to 48 I/O pins. It also includes a broad set of on-chip peripherals, including a 48 MHz timer/counter, USART, RTC, and up to three USARTs and two SPI/I2C interfaces. The device also offers active and sleep modes with an on-chip debug system, simplifying application development. The ATSAME51J19A-MU is ideal for applications requiring higher performance and flexibility, such as automotive and industrial automation, home automation, appliances, and building control.