ATSAME70Q21A-AN

Overview

The ATSAME70Q21A-AN 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-pin LQFP package. The device supports a supply voltage range of 1.62V to 3.6V and includes extensive connectivity options such as Ethernet, CANbus, USB, SPI, I2C, UART, USART, LINbus, IrDA, MMC/SD/SDIO, and QSPI. It also provides 24-channel 12-bit ADCs, two 12-bit DACs, and various peripherals including DMA, I2S, PWM, and watchdog timers.

Feature Summary

• High-performance processing via ARM Cortex-M7 core with integrated DSP and FPU capabilities for complex algorithm execution.
• Comprehensive peripheral set including multiple high-speed serial interfaces, dedicated motor control timers, and analog-to-digital converters.
• Integrated Ethernet MAC with dedicated DMA for efficient network data handling and communication protocols.
• Flexible memory architecture supporting in-system programming and secure boot functionality.

Applications

• Industrial automation controllers requiring robust real-time processing and multiple communication buses
• Motor control systems utilizing advanced timer configurations and analog signal acquisition
• Networked embedded devices leveraging integrated Ethernet and USB connectivity
• Human-machine interface (HMI) panels demanding high-speed graphics processing and display control

Procurement Notes

Verify the specific suffix 'AN' corresponds to the LQFP-144 package variant when sourcing. Confirm RoHS compliance status and moisture sensitivity level (MSL 3) requirements for your assembly process. Ensure compatibility with development tools such as ATATMEL-ICE or AT91SAM-ICE for debugging and programming. Check for any recent product change notices regarding pinout or electrical characteristics updates.

Selection Notes

Select this component when a balance of high computational power and rich peripheral integration is required in a standard surface-mount package. The LQFP-144 form factor offers easier PCB layout compared to BGA options while maintaining access to the full SAM E70 feature set. Consider thermal dissipation capabilities of the LQFP package for high-load applications. Evaluate if the 300MHz clock speed meets the deterministic timing needs of your control loops.

Part Context

This MCU belongs to the SAM E70 family, designed for cost-sensitive applications needing Cortex-M7 performance without the higher complexity of the V71 series. It shares architectural similarities with the S70 and V70 families but focuses on essential industrial and networking features. The device serves as a central processing unit for systems requiring reliable data acquisition and multi-protocol communication.

Replacement Considerations

ATSAMS70Q21A-CN: Same core and memory but in UFBGA package; requires PCB redesign. ATSAME70N21A-AN: Lower pin count (100-LQFP) with reduced I/O availability. ATSAMS70Q21B-CN: Similar specifications but may differ in specific peripheral configurations or packaging details; verify datasheet alignment.