ATSAME70Q21B-CN

Overview

The ATSAME70Q21B-CN is a high-performance ARM microcontroller from the SAM E70 series, manufactured by Microchip Technology. It features an ARM Cortex-M7 core operating at a maximum clock frequency of 300 MHz. The device integrates 2 MB of Flash memory and 384 kB of SRAM. It utilizes a 32-bit data bus width and provides 114 I/O lines. Key peripherals include 12-bit ADC and DAC resolution with 24 ADC channels. The unit operates within a voltage range of 1.7 V to 3.6 V and supports interfaces such as SPI, UART, USART, I2C, and LIN. It is housed in an LFBGA-144 package and functions within a temperature range of -40°C to +105°C.

Feature Summary

• ARM Cortex-M7 processor core with floating-point unit for complex mathematical calculations
• Integrated dual high-speed USB controllers and Ethernet MAC for robust connectivity
• Hardware acceleration for digital signal processing tasks via DSP instruction set
• Extensive peripheral interface suite including CAN-FD and multiple communication buses

Applications

• Industrial gateway systems requiring high computational density
• Motor control applications utilizing field-oriented control algorithms
• Human-machine interface (HMI) displays with graphical capabilities

Procurement Notes

Verify the specific suffix CN against the official Microchip datasheet to confirm regional compliance and material specifications. Ensure the LFBGA-144 package footprint matches your PCB design constraints. Confirm that the selected development tools support the SAM E70 family architecture for proper programming and debugging workflows.

Selection Notes

Select this component when project requirements demand high-frequency processing combined with extensive on-chip memory. The inclusion of hardware floating-point units makes it suitable for real-time signal processing. Evaluate the available I/O count against system interface needs before finalizing the choice.

Part Context

This part belongs to the SAM E70 series, designed for demanding embedded applications. It bridges the gap between standard microcontrollers and application processors. The series emphasizes performance per watt and rich connectivity options for industrial and commercial environments.

Replacement Considerations

Consult the official Microchip cross-reference guide for verified substitutes. Consider variants within the same SAM E70 family that offer different pin counts or memory configurations if the current model is unavailable.

FAQ

Does the ATSAME70Q21B-CN support off-chip trace?

Yes, the device supports off-chip trace capabilities, which can be utilized with compatible debuggers like Lauterbach TRACE32 for advanced profiling.

What is the maximum operating temperature for this MCU?

The maximum operating temperature is +105°C, making it suitable for industrial-grade applications.