The ATSAM4S4AB-MN is a System-in-Package (SiP) microcontroller from Microchip’s ATSAM4S product family. It combines the ATSAM4S4A microcontroller and 28 external memories into a single package, making it ideal for space-constrained designs. It includes a low-power ARM® Cortex ITM-M0+ processor, a high-speed flash controller, a built-in relative humidity and temperature sensor, and a performant data safety controller. The device operates at up to 48 MHz and integrates a powerful Cortex-M0+ processor with up to 256 KB of flash and 32 KB SRAM. It also offers numerous peripherals including Timers/Counters, PWM, DMA controller, Serial Communication Interface, I2S and support for up to five SPI masters. This makes the ATSAM4S4AB-MN an ideal choice for use in a wide variety of applications such as home automation, lighting control, industrial automation, and professional audio applications.