ATSAME70Q21A-CFNT

Overview

The ATSAME70Q21A-CFNT is a 32-bit microcontroller from the SAM E70 series, featuring an ARM Cortex-M7 core operating at 300MHz. It integrates 2MB of flash memory and 384KB of SRAM within a 144-UFBGA package measuring 6x6 mm. The device supports a supply voltage range of 1.62V to 3.6V and operates between -40°C and 105°C. Connectivity includes Ethernet, CANbus, USB, SPI, I2C, UART/USART, QSPI, MMC/SD/SDIO, LINbus, IrDA, and EBI/EMI. Peripherals comprise DMA, I2S, PWM, WDT, POR, and power-on reset. Data conversion capabilities consist of 24-channel 12-bit ADCs and two 12-bit DACs.

Feature Summary

• High-performance processing via ARM Cortex-M7 core with DSP and FPU support for complex algorithm execution
• Integrated Ethernet MAC with dedicated DMA for efficient network data handling
• Comprehensive peripheral set including multiple communication interfaces and high-resolution analog converters
• Flexible memory architecture combining large flash storage with substantial static RAM

Applications

• Industrial motor control systems requiring precise timing and processing
• Human-machine interface (HMI) panels in automation equipment
• Smart energy metering devices with advanced communication protocols
• Medical instrumentation requiring high-speed data acquisition

Procurement Notes

Verify the specific suffix CFNT confirms the 144-UFBGA(6x6) package type and tape-and-reel shipping format. Confirm the A-grade temperature rating (-40°C to 105°C) matches application requirements. Ensure compatibility with existing PCB footprints designed for this specific ball grid array configuration. Check for any recent product change notifications regarding pinout or electrical characteristics updates.

Selection Notes

Select this component when both high computational throughput and extensive connectivity are required. The inclusion of Ethernet and CANbus distinguishes it from lower-end variants lacking these interfaces. Consider the 2MB flash capacity for applications storing significant firmware or graphical assets. Evaluate the 300MHz clock speed against power consumption constraints inherent to Cortex-M7 implementations.

Part Context

This part belongs to the SAM E70 family, which targets cost-sensitive applications compared to the S70 and V71 series. While sharing the same core and many peripherals, the E70 series typically offers reduced memory options or fewer specialized interfaces. It serves as a bridge between mid-range MCUs and high-end processors, balancing performance with manufacturing efficiency.

Replacement Considerations

ATSAME70Q21A-CN is a tray-packaged alternative with identical electrical specifications. ATSAMS70Q21A-CFNT shares the same package but belongs to the SAM S70 series, potentially differing in specific peripheral availability or errata.