ATSAMS70N20A-AN

Overview

The ATSAMS70N20A-AN is a 32-bit microcontroller based on the ARM Cortex-M7 core, operating at a maximum frequency of 300MHz. It features 1MB (1M x 8) of in-system programmable Flash memory and 384K x 8 bytes of SRAM. The device supports a supply voltage range of 1.62V to 3.6V and includes integrated analog-to-digital converters (10x12b) and digital-to-analog converters (2x12b). It is housed in a 100-LQFP package with 75 available I/O pins.

Feature Summary

• Integrates an ARM Cortex-M7 processor with single-cycle hardware multiply and MAC capabilities for high-performance computing.
• Includes dedicated Ethernet MAC with DMA controller supporting MII and RMII interfaces for network connectivity.
• Features multiple communication peripherals including CAN bus, USB OTG, SPI, UART/USART, and I2C.
• Provides flexible memory access control unit for managing instruction and data buses.

Applications

• Industrial automation controllers requiring deterministic real-time processing
• Human-machine interface (HMI) panels with graphical displays
• Networked sensor nodes utilizing Ethernet or USB connectivity
• Motor control systems integrating PWM and analog feedback

Procurement Notes

Verify the specific suffix 'AN' corresponds to the 100-LQFP tray packaging configuration as distinct from tape-and-reel variants like 'ANT'. Confirm the voltage range specification matches the design requirements, noting potential variations between E70 and S70 series datasheets regarding minimum operating voltage. Ensure component authenticity through authorized Microchip distributors to avoid counterfeit risks associated with high-volume MCU markets.

Selection Notes

Select this model when a balance of high computational performance and moderate pin count is required. The 100-LQFP package offers a suitable footprint for designs where board space is constrained but extensive I/O is not necessary. Consider the SAM E70 versus SAM S70 series differences if external Ethernet PHY integration is preferred over internal MAC implementation, as the N20 variant typically targets applications needing robust peripheral integration without external transceivers.

Part Context

This component belongs to the SAM E70/S70 family of microcontrollers designed for cost-sensitive applications demanding Cortex-M7 performance. It shares architectural similarities with the V70/V71 series but offers reduced peripheral sets and memory configurations. The part is positioned below higher-end models in terms of I/O density and external memory interface support, targeting embedded control tasks rather than complex multimedia processing.

Replacement Considerations

ATSAME70N20A-AN is the corresponding member of the SAM E70 series with identical core specifications and memory layout. Substitution requires verification of Ethernet interface compatibility, as the E70 series may require external PHYs depending on the specific revision and application design constraints.