ATSAMS70J21B-AN

Overview

The ATSAMS70J21B-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 in-system programmable flash memory and 384 KB of SRAM. The device includes an integrated DSP unit and floating-point units (FPU). It supports a supply voltage range of 1.7 V to 3.6 V and operates within a temperature range of -40°C to +105°C. The component utilizes an LQFP-64 package.

Feature Summary

• Integrates an ARM Cortex-M7 processor with DSP capabilities and single-precision FPU for high-performance signal processing.
• Provides extensive connectivity options including multiple SPI, UART/USART, USB OTG, and SSC interfaces.
• Features robust analog peripherals with five 12-bit ADC channels and one 12-bit DAC channel.

Applications

• Industrial automation controllers requiring real-time processing
• Human-machine interface (HMI) displays
• Medical equipment control systems
• Automotive infotainment and instrument clusters

Procurement Notes

Verify the specific suffix 'B' against official Microchip documentation to confirm silicon revision or errata status. Ensure the LQFP-64 package dimensions match the target PCB footprint. Confirm that the required flash capacity and I/O count align with system design constraints before finalizing procurement.

Selection Notes

Select this model when high computational throughput is required alongside moderate pin counts. The 2 MB flash allows for complex firmware and large data buffers. Compare against lower-capacity variants like the ATSAMS70J20 if cost reduction is prioritized over memory size. Ensure thermal management supports the 105°C junction temperature limit.

Part Context

This component belongs to the SAM S70 family of microcontrollers designed for applications demanding high performance and rich peripheral integration. It shares architectural similarities with the SAM E70 and SAM V70 series but offers optimized feature sets for specific market segments. The family emphasizes security and connectivity for embedded systems.

FAQ

Does the ATSAMS70J21B-AN include hardware security features?

Yes, the device integrates hardware security features such as secure boot, encryption engines, and debug protection mechanisms to safeguard intellectual property.

What is the maximum operating speed of the Cortex-M7 core?

The internal clock can be configured to operate at a maximum frequency of 300 MHz.