ATSAMV71N21

Updated: 2026-07-20

Overview

The ATSAMV71N21 is a flagship microcontroller in Microchip's SAM V71 family, leveraging the Arm Cortex-M7 architecture for high-speed computation. It targets demanding applications requiring real-time performance, such as motor control, industrial gateways, and automotive subsystems. With 2MB Flash and 384KB SRAM, it balances memory capacity with power efficiency. Its rich peripheral set includes 10/100 Ethernet MAC, HS USB, and dual CAN FD interfaces, making it suitable for connected embedded systems.

Structure and Working Principle

The MCU integrates a Cortex-M7 core with Floating Point Unit (FPU) and DSP instructions, enabling efficient signal processing. The hierarchical bus architecture ensures low-latency access to peripherals and memory. On-chip security features include a hardware cryptographic engine, tamper detection, and secure boot options. The device operates at 1.2V core voltage with multiple power-saving modes, critical for energy-sensitive applications.

Key Features

Performance: 300 MHz clock speed with 856 DMIPS ensures rapid task execution. Memory options include QSPI for external expansion. Connectivity: Integrated Ethernet, USB 2.0 HS, and CAN FD support industrial communication protocols. Analog peripherals like 16-bit ADCs enhance sensor interfacing capabilities.

Application Areas

Industrial: PLCs, HMIs, and motor drives benefit from real-time control and robust connectivity. Automotive: Gateway modules and ECU designs leverage CAN FD and fault-tolerant features. IoT: Secure edge devices use cryptographic acceleration for data integrity.

Maintenance and Precautions

Thermal Management: Ensure adequate heat dissipation for sustained high-performance operation. ESD Protection: Use grounded workstations during PCB assembly. Firmware Updates: Utilize bootloader features for secure field updates.

B2B Procurement Guide

Certifications: Check for AEC-Q100 compliance if used in automotive contexts. Lead Times: Microchip typically offers 8–12 weeks for production quantities. Alternatives: For cost-sensitive projects, consider SAM E70 series with reduced peripherals. Always validate pin compatibility during design migration.