ATSAMS70J21B-MN

Overview

The ATSAMS70J21B-MN is a Microchip Technology ARM microcontroller from the SAM S70 series, featuring an ARM Cortex-M7 core operating at a maximum clock frequency of 300 MHz. It integrates 2 MB of Flash program memory and 384 kB of SRAM data RAM within a VQFN-64 package. The device supports a 32-bit data bus width and includes a 16 kB ROM. It offers 44 general-purpose I/O lines with an I/O voltage of 3.3 V. Peripheral interfaces include SPI, UART, USART, and USB. The component operates on a supply voltage range of 1.7 V to 3.6 V, with an analog supply voltage of 3.3 V. It features 5-channel 12-bit ADCs and a 12-bit DAC. The operational temperature range spans from -40°C to +105°C.

Feature Summary

• High-performance processing capability via ARM Cortex-M7 core integrated with DSP and FPU units for complex computational tasks.
• Integrated mixed-signal conversion capabilities including multiple 12-bit analog-to-digital converters and a digital-to-analog converter.
• Robust connectivity suite supporting standard serial protocols such as SPI, UART, USART, and Universal Serial Bus.
• Extended industrial-grade thermal stability allowing reliable operation across a wide ambient temperature spectrum.

Applications

• Industrial automation control systems requiring high-speed processing and robust peripheral interfaces.
• Medical devices utilizing precise analog signal acquisition through integrated ADC channels.
• Consumer electronics employing USB connectivity and high-density display or storage management.
• Automotive infotainment and instrumentation clusters demanding real-time performance in harsh environments.

Procurement Notes

Verify the specific suffix 'MN' corresponds to the VQFN-64 surface-mount package configuration prior to ordering. Confirm that the required quantity aligns with the manufacturer's standard packaging specifications, which may differ from tape-and-reel formats used by other variants in the same family. Ensure compatibility with existing board layouts regarding the 64-pin footprint dimensions and thermal pad requirements specified in the official datasheet.

Selection Notes

Select this variant when a compact VQFN-64 form factor is necessary alongside substantial memory resources. The combination of 2 MB Flash and 384 kB SRAM supports complex firmware architectures without external memory expansion. Consider the 300 MHz clock speed for applications requiring rapid execution of algorithms. Evaluate the 44 available I/O pins against system interface requirements to ensure sufficient connectivity for sensors, actuators, and communication buses.

Part Context

This component belongs to the SAM S70 family of microcontrollers designed for high-performance embedded applications. The family shares common architectural features based on the ARM Cortex-M7 processor but varies in memory size, package type, and pin count. The ATSAMS70J21B-MN represents a specific configuration optimized for space-constrained designs requiring significant processing power and integrated peripherals.

Replacement Considerations

Cross-reference with ATSAMS70J21A-MN for potential pin-compatible upgrades or revisions within the same package. Verify functional equivalence with ATSAMS70J21B-ANT if transitioning to an LQFP-64 package is acceptable for the design.