ATSAMS70Q20B-CFN

Overview

The ATSAMS70Q20B-CFN is a 32-bit microcontroller based on the ARM Cortex-M7 core, operating at a maximum frequency of 300 MHz. It features 1 MB of flash program memory and 384 KB of SRAM. The device includes 24-channel 12-bit ADCs and two 12-bit DACs. It offers 114 I/O pins and supports interfaces including SPI, UART, USART, USB, I2C, and Ethernet. Operating voltage ranges from 1.7 V to 3.6 V, with an industrial temperature range of -40°C to +105°C. It is housed in a 144-LFBGA package.

Feature Summary

• High-performance processing via ARM Cortex-M7 core running up to 300 MHz
• Integrated analog conversion capabilities with multiple 12-bit ADC channels and DAC outputs
• Comprehensive connectivity suite supporting Ethernet, USB, and standard serial protocols
• Robust peripheral set including DMA, PWM, and watchdog timer for system control

Applications

• Industrial automation controllers requiring high-speed processing
• Medical devices utilizing precise analog signal acquisition
• Automotive infotainment and instrument cluster systems
• Smart home hubs with network connectivity requirements

Procurement Notes

Verify the specific suffix CFN confirms the 144-LFBGA package variant. Confirm RoHS compliance status matches project environmental regulations. Check for any recent PCN updates regarding packaging or material changes. Ensure ESD handling procedures are followed due to moisture sensitivity level 3 classification. Validate supply chain authenticity through authorized Microchip distributors.

Selection Notes

Select this model when 1 MB flash and 384 KB RAM are required alongside Ethernet connectivity. Choose over smaller variants if complex real-time control algorithms are needed. Consider the LFBGA package constraints for PCB layout density. Compare against SAM E70 series if extended temperature ranges beyond industrial limits are not required. Evaluate pin count adequacy for 114 I/O requirements.

Part Context

This component belongs to the SAM S70 family, designed for applications demanding high performance and rich connectivity. It shares architectural similarities with the SAM E70 but targets specific market segments. The Q20 designation indicates the memory configuration within the series. It complements lower-end MCUs by providing significant computational power and analog integration.

Replacement Considerations

ATSAMS70Q20A-CFN serves as a direct predecessor with identical specifications. ATSAMS70Q21A-CFN offers increased flash capacity while maintaining the same package and core. ATSAMS70Q19B-CFN provides reduced memory resources within the same footprint. Verify pin compatibility before substituting with these variants.