ATSAME70Q21B-CNT

Overview

The ATSAME70Q21B-CNT is a 32-bit ARM Cortex-M7 microcontroller from the SAM E70 series, manufactured by Microchip Technology. It features a maximum clock frequency of 300 MHz, 2 MB of Flash memory, and 384 kB of SRAM. The device includes 24 ADC channels with 12-bit resolution and 2 DAC channels with 12-bit resolution. It offers 114 I/O pins, operates within a voltage range of 1.7 V to 3.6 V, and supports interfaces including SPI, UART/USART, and USB. The component is housed in an LFBGA-144 package and functions within a temperature range of -40°C to +105°C.

Feature Summary

• Integrates an ARM Cortex-M7 core with hardware floating-point unit for high-performance processing.
• Provides extensive analog connectivity via multiple 12-bit ADC and DAC channels.
• Supports diverse communication protocols including USB, SPI, and USART for system integration.

Applications

• Industrial automation control systems
• Motor control applications requiring precise signal processing
• Human-machine interface (HMI) devices

Procurement Notes

Verify the specific suffix CNT against official Microchip documentation to confirm the reel packaging configuration and moisture sensitivity level. Ensure compatibility with existing design-in tools such as Atmel-ICE or AT91SAM-ICE debuggers. Cross-reference the RoHS status and lead-free specifications with current manufacturer compliance reports before finalizing procurement orders.

Selection Notes

Select this component when a balance of high computational throughput and rich peripheral sets is required. The 2 MB Flash capacity accommodates complex firmware and data logging needs. Consider the LFBGA-144 package constraints for PCB layout. Evaluate thermal management requirements given the operating temperature range and power consumption characteristics of the Cortex-M7 architecture at 300 MHz.

Part Context

This part belongs to the SAM E70 family, designed for cost-sensitive embedded applications needing robust performance. It shares architectural similarities with the SAM S70 but typically offers reduced memory configurations. The series targets industrial and consumer markets where reliable real-time control and connectivity are essential. Development support is available through Microchip's ecosystem of software libraries and hardware evaluation kits.

Replacement Considerations

ATSAME70Q21B-CN serves as a tray-packaged alternative with identical electrical specifications. ATSAMS70Q21A-CFN offers increased Flash memory but differs in package type. Verify pinout compatibility and software library support when substituting these variants.