ATSAMS70N21B-CFN

The ATSAMS70N21B-CFN microcontroller is an ultra-low-power embedded processor from Microchip Technology that features an ARM Cortex-M7 core running at 120 MHz and has 32 kB of SRAM and 512 kB of flash memory. It is particularly suited for use in applications requiring low power consumption, such as Internet of Things (IoT) systems, sensor nodes, and portable devices.

The ATSAMS70N21B-CFN is equipped with a set of peripherals that make it suitable for a range of embedded applications. The microcontroller provides two Universal Serial Bus (USB) controllers, four Timer Counters (TC) with two Synchronous Serial Controllers (SSC), a two-wire Inter-Integrated Circuit (I2C) interface, and a High-Speed Multimedia Card Interface (HSMCI). In addition, it features an Enhanced Embedded Microcontroller Interruptor (eEMI) controller, a DMA controller, and a hardware MAC for Ethernet communications.

The ATSAMS70N21B-CFN supports both on-chip and external memory, allowing it to store large amounts of data. In order to enable fast data transfer and real-time streaming, it provides both direct memory access (DMA) and peripheral direct memory access (PDM) controllers. Additionally, the microcontroller integrates several digital signal processing blocks, including a digital filter engine and two ADC/DACs to enable signal processing.

The main working principle of the ATSAMS70N21B-CFN is based on a Harvard architecture: instructions and data are stored in separate memory spaces and can be addressed independently. This architecture enables the microcontroller to efficiently process instructions and access memory at the same time, providing higher performance compared to Von Neumann architectures. Furthermore, the ATSAMS70N21B-CFN features a number of features to ensure compatibility with existing software, such as memory protection and an instruction pipeline architecture.

The ATSAMS70N21B-CFN is suitable for a variety of embedded applications, such as wearable and portable devices, home and building automation, industrial automation, and automotive applications. Its low-power features, combined with its advanced features, make it an ideal solution for embedded system designers.