ATSAMS70N21A-CFN

Overview

The ATSAMS70N21A-CFN is a 32-bit microcontroller from the Microchip SAM S70 series, featuring an ARM Cortex-M7 core operating at 300MHz. It integrates 2MB of Flash memory and 384KB of SRAM within a 144-pin UFBGA package (10x10x0.6mm). The device supports a supply voltage range of 1.7V to 3.6V and includes interfaces such as SPI, UART/USART, and USB. It provides 114 I/O pins, 24-channel 12-bit ADCs, and 12-bit DACs, with an operating temperature range of -40°C to +105°C.

Feature Summary

• High-performance ARM Cortex-M7 processor core running up to 300MHz
• Integrated large memory capacity with 2MB Flash and 384KB SRAM
• Extensive analog capabilities including multiple 12-bit ADC and DAC channels
• Comprehensive connectivity suite supporting standard serial and mass storage protocols

Applications

• Industrial automation control systems
• Medical equipment requiring high processing power
• Automotive infotainment and instrument clusters
• Smart home hubs and IoT gateways

Procurement Notes

Verify the specific suffix 'CFN' corresponds to the 144-pin UFBGA package configuration when sourcing. Confirm that the component meets required environmental standards for the intended application temperature range. Ensure compatibility with existing PCB footprints designed for the 10x10mm form factor. Check for any recent datasheet updates regarding pinout or electrical characteristics before finalizing procurement.

Selection Notes

Select this model when a balance of high computational throughput and extensive peripheral count is required in a compact footprint. The 144-pin interface offers significant I/O flexibility compared to smaller packages in the same series. Consider the 300MHz clock speed for applications demanding real-time processing of complex algorithms or graphics rendering tasks.

Part Context

This component belongs to the SAM S70 family, which targets high-performance embedded applications. It shares architectural similarities with other Cortex-M7 based MCUs but distinguishes itself through its specific memory map and peripheral integration. The part is designed for robust operation in demanding environments, offering reliability features suitable for long-term industrial deployment.

Replacement Considerations

Direct substitutes within the same package and pinout include other variants in the ATSAMS70NxxA series with compatible memory sizes. Cross-series migration may require schematic and firmware adjustments due to differences in peripheral availability or pin assignments.