ATSAMS70J21B-ANT

Overview

The ATSAMS70J21B-ANT is a 32-bit microcontroller from the Microchip SAM S70 series, featuring an ARM Cortex-M7 core operating at 300 MHz. It integrates 2 MB of flash memory and 384 KB of SRAM. The device is housed in a 64-pin LQFP package with exposed pad. 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. Key peripherals include multiple communication interfaces such as SPI, UART/USART, USB, I2C, and SSC.

Feature Summary

• High-performance processing via ARM Cortex-M7 core with single-precision FPU
• Integrated high-density non-volatile memory for complex application storage
• Comprehensive connectivity suite supporting industrial and consumer protocols
• Advanced analog subsystem with multiple ADC channels and DAC output

Applications

• Industrial automation controllers requiring real-time processing
• Human-machine interface (HMI) displays and panels
• Medical equipment control systems
• Smart metering and utility infrastructure devices

Procurement Notes

Verify the specific suffix 'ANT' against the official Microchip datasheet to confirm the tape-and-reel packaging configuration and pinout compatibility. Ensure that the design accounts for the thermal characteristics associated with the LQFP-64 package under maximum load conditions. Cross-reference the revision level with any published errata sheets prior to finalizing the bill of materials.

Selection Notes

Select this component when a balance of moderate I/O count and substantial code storage is required. It serves as a suitable alternative to lower-memory variants like the ATSAMS70J20A if larger firmware or data buffers are needed. Compare pin compatibility with other SAM S70 family members to ensure board layout reuse without schematic changes.

Part Context

This part belongs to the SAM S70 family, which targets performance-oriented embedded applications. It shares architectural similarities with the SAM E70 and SAM V71 families but offers distinct peripheral configurations and memory maps optimized for cost-sensitive yet powerful control tasks. The family emphasizes security features and low-power operation modes alongside high-speed execution.

Replacement Considerations

Direct substitutes within the same package and pinout include other SAM S70 variants with matching memory sizes, such as the ATSAMS70J21A-ANT, provided the silicon revision differences are acceptable. Verify functional equivalence regarding peripheral availability before swapping.