ATSAMS70Q21A-CN

Overview

The ATSAMS70Q21A-CN is a 32-bit microcontroller based on the ARM Cortex-M7 core, operating at a maximum frequency of 300 MHz. It features 2 MB of in-system programmable flash memory and 384 KB of SRAM. The device includes an internal oscillator and supports a supply voltage range of 1.7 V to 3.6 V. It provides 114 general-purpose I/Os and integrates multiple communication interfaces including SPI, UART, USART, and USB. Analog capabilities consist of 24-channel 12-bit ADCs and 2-channel 12-bit DACs. The component is housed in a 144-pin LFBGA package and operates within a temperature range of -40°C to +105°C.

Feature Summary

• High-performance processing via ARM Cortex-M7 core with integrated DSP instructions and FPU
• Extensive analog conversion support with 24-channel 12-bit ADCs and dual 12-bit DACs
• Robust connectivity suite including USB, SPI, UART, USART, I2C, IrDA, LINbus, MMC/SD/SDIO, QSPI, EBI/EMI, and I2S

Applications

• Industrial automation controllers requiring high-speed processing and extensive I/O
• Medical equipment utilizing precise analog signal acquisition and conversion
• Consumer electronics devices needing robust multimedia and communication interfaces

Procurement Notes

Verify the specific suffix CN indicates tray packaging when reviewing distributor listings. Confirm the part number matches the exact pin count and package dimensions required for your PCB layout. Ensure compatibility with the SAM S70 family development tools and software libraries. Check for any recent PCN updates regarding material or manufacturing changes.

Selection Notes

Select this model when 2 MB of flash and 384 KB of RAM are necessary for complex firmware applications. Choose the 144-pin BGA package if board space allows for fine-pitch surface mount assembly. Consider the 300 MHz clock speed for real-time control tasks. Verify that the 1.7 V to 3.6 V supply range aligns with your system power design constraints.

Part Context

This component belongs to the Microchip SAM S70 series, which targets high-performance embedded applications. The series shares architectural similarities with the SAM E70 and SAM V71 families but offers distinct peripheral configurations. The Cortex-M7 core provides significant computational throughput compared to lower-tier ARM cores in the same ecosystem.

Replacement Considerations

ATSAMS70Q21A-CFNT: Same electrical specifications and core functionality; differs only in tape-and-reel packaging instead of tray.