ATSAMS70N20B-CNT

Overview

The ATSAMS70N20B-CNT is a 32-bit microcontroller from the Microchip SAM S70 series, featuring an ARM Cortex-M7 core operating at 300 MHz. It integrates 1 MB of Flash memory and 384 kB of SRAM within a 100-LQFP package. The device supports a supply voltage range of 1.7 V to 3.6 V and includes 75 general-purpose I/Os. Peripheral interfaces include SPI, UART, USART, USB, I2C, LIN, and IrDA. It features ten 12-bit ADC channels and two 12-bit DAC channels, with an internal oscillator and operation across a temperature range of -40°C to +105°C.

Feature Summary

• High-performance processing via ARM Cortex-M7 core running at 300 MHz
• Integrated analog conversion capabilities with multiple 12-bit ADC and DAC channels
• Comprehensive connectivity suite supporting USB, Ethernet, CAN-FD, and various serial protocols
• Robust peripheral set including DMA controllers, PWM units, and watchdog timers

Applications

• Industrial automation control systems
• Medical equipment requiring high-speed data acquisition
• Smart metering and utility infrastructure
• Human-machine interface (HMI) displays

Procurement Notes

Verify the specific suffix CNT indicates tape-and-reel packaging when sourcing components. Confirm the part number matches the exact SAM S70 variant required for your design. Check for any recent datasheet updates or errata sheets that may impact implementation details. Ensure compatibility with your chosen development tools and debuggers before finalizing procurement decisions.

Selection Notes

Select this component for applications demanding high computational throughput and extensive analog interfacing. The LQFP-100 package offers a balance of pin count and thermal performance for surface-mount assembly. Consider the 300 MHz clock speed for complex real-time processing tasks. Evaluate the available I/O count against system requirements to ensure sufficient connectivity without unnecessary cost overhead.

Part Context

This microcontroller belongs to the SAM S70 family, designed for high-performance embedded applications. It shares architectural similarities with the ATSAME70 and ATSAMV70 series but is optimized for specific market segments. The device leverages the same Cortex-M7 core found in other high-end Microchip MCUs, ensuring software portability across the broader product line while offering distinct peripheral configurations.

Replacement Considerations

Direct substitutes within the same package and pinout include ATSAMS70N20A-BNT and ATSAMS70N20B-ANT. Cross-series replacements like ATSAME70N20B-CNT offer similar specifications but may differ in peripheral availability or certification status. Verify electrical characteristics and firmware compatibility when considering alternative part numbers.