ATSAME70Q21B-CFNT

Overview

The ATSAME70Q21B-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. The device supports a supply voltage range of 1.08V to 3.6V and includes 24-channel 12-bit ADCs and 2-channel 12-bit DACs. Connectivity options encompass USB, Ethernet MAC, CAN-FD, SPI, I2C, UART/USART, QSPI, MMC/SD/SDIO, and EBI/EMI interfaces.

Feature Summary

• High-performance processing via ARM Cortex-M7 core with FPU and DSP instructions
• Integrated dual high-speed USB controllers and 10/100 Ethernet MAC
• Dual CAN-FD controllers for robust industrial communication
• Extensive peripheral set including DMA, I2S, PWM, and multiple serial interfaces

Applications

• Industrial gateways and automation controllers
• Motor control systems requiring Field-Oriented Control (FOC)
• Human-machine interface (HMI) displays
• Smart energy metering devices
• Motion tracking and sensor fusion applications

Procurement Notes

Verify the specific suffix CFNT against official Microchip documentation to confirm package type and tape-and-reel configuration. Ensure compatibility with existing PCB footprints for the 144-UFBGA form factor. Cross-reference moisture sensitivity levels and reflow soldering profiles during procurement planning to maintain component integrity throughout assembly processes.

Selection Notes

Select this component when high computational density and extensive connectivity are required in a single chip. The combination of Ethernet, dual USB, and dual CAN-FD makes it suitable for complex networked nodes. Consider the 300MHz clock speed and available SRAM for running advanced algorithms like Kalman filters or real-time graphics rendering without external memory dependencies.

Part Context

This part belongs to the SAM E70 family, designed for high-performance embedded applications. It shares architectural similarities with the SAM S70 and V71 series but is optimized for industrial and networking tasks. The Q21 variant specifically denotes the pin count and memory configuration within the broader E70 ecosystem, targeting cost-sensitive yet feature-rich designs.

Replacement Considerations

Direct substitutes include ATSAMS70Q21B variants for similar performance with different packaging. For legacy projects, ATSAM9G20 series may offer comparable I/O counts but differ significantly in architecture. Verify pin-to-pin compatibility and software library support before migrating to alternative Microchip MCUs.