ATSAMS70N21B-AN

Overview

The ATSAMS70N21B-AN is a 32-bit microcontroller based on the ARM Cortex-M7 core, operating at a maximum frequency of 300 MHz. It features 2 MB of Flash memory and 384 kB of SRAM within a 100-pin LQFP package. The device supports a supply voltage range of 1.7 V to 3.6 V and includes 75 general-purpose I/Os. Peripheral interfaces include SPI, UART/USART, and USB. It operates within a temperature range of -40°C to +105°C.

Feature Summary

• High-performance processing via ARM Cortex-M7 core with DSP instructions
• Integrated high-speed connectivity including USB OTG support
• Advanced analog subsystem with multiple 12-bit ADC channels

Applications

• Industrial automation controllers
• Medical equipment systems
• Smart metering infrastructure

Procurement Notes

Verify the specific suffix 'AN' against official Microchip documentation to confirm the package type and tape/reel configuration. Ensure the ordering part number matches the required pin count and thermal specifications for your PCB layout. Cross-reference the datasheet revision date to confirm interface compatibility.

Selection Notes

Select this component when a balance of high computational throughput and moderate I/O density is required. The 100-pin form factor suits designs needing extensive peripheral access without excessive board space. Consider the 300 MHz clock speed for complex real-time control loops requiring deterministic response times.

Part Context

This unit belongs to the SAM S70 family, designed for applications demanding robust performance and security. It shares architectural similarities with other S70 variants but offers specific memory and package configurations tailored for cost-sensitive industrial and commercial deployments.

Replacement Considerations

Consult the SAM S70 family datasheet for direct pin-compatible alternatives such as ATSAMS70N20A or ATSAMS70N19A. Verify that memory sizes and package dimensions align with existing hardware constraints before substitution.