ATSAMV71Q21B-CB

Overview

The ATSAMV71Q21B-CB is an automotive-grade ARM microcontroller from the SAM V71 series, built on the 32-bit ARM Cortex-M7 core with a floating-point unit. It features 2 MB of Flash memory and 384 kB of SRAM, operating at a maximum frequency of 300 MHz. The device utilizes a TFBGA-144 package and supports AEC-Q100 qualification for temperatures ranging from -40°C to +105°C. Key interfaces include Ethernet, CAN, I2C, SPI, UART, USART, USB, I2S, ISI, and SD. It integrates 24 ADC channels with 12-bit resolution and includes an Analog Front End (AFE).

Feature Summary

• Automotive-grade reliability compliant with AEC-Q100 standards.
• Integrated Analog Front End (AFE) for sensor signal conditioning.
• High-performance processing via ARM Cortex-M7 core with FPU.
• Comprehensive connectivity suite including Ethernet AVB and multiple serial interfaces.

Applications

• Advanced Driver Assistance Systems (ADAS)
• In-Vehicle Infotainment (IVI) systems
• Digital instrument clusters
• Telematics control units

Procurement Notes

Verify the specific suffix 'CB' corresponds to the TFBGA-144 tray packaging variant when ordering. Confirm that the design requires the integrated Analog Front End (AFE), as this distinguishes it from other Q21 variants. Ensure the application environment meets the specified -40°C to +105°C operating temperature range. Cross-reference the datasheet for pinout compatibility if substituting from previous revisions.

Selection Notes

Select this component when automotive certification and high-speed Ethernet connectivity are mandatory. The inclusion of the AFE makes it suitable for direct sensor interfacing without external analog components. Compare against the ATSAME70 series if Ethernet or AFE features are not required, as the SAM E70 offers a different interface set. Consider the TFBGA-144 package constraints regarding PCB layout and thermal management during the selection phase.

Part Context

This MCU belongs to the SAM V71 family, designed specifically for demanding automotive applications requiring high performance and safety. It shares architectural similarities with the SAM E70 but adds automotive qualifications and specialized peripherals like the AFE. The Q21 designation indicates the specific memory configuration and peripheral set within the broader V71 lineup.

Replacement Considerations

ATSAMV71Q21B-AAB: LQFP-144 package variant with similar specifications.

FAQ

What is the primary difference between the ATSAMV71Q21B-CB and the ATSAME70Q21B-CN?

The ATSAMV71Q21B-CB is AEC-Q100 qualified for automotive use and includes an Analog Front End (AFE) and Ethernet AVB support, whereas the ATSAME70Q21B-CN is a commercial-grade device lacking these specific automotive and analog features.

Does the ATSAMV71Q21B-CB support Audio Video Bridging (AVB)?

Yes, the device includes an Ethernet controller that supports Audio Video Bridging (AVB) protocols, facilitating real-time audio and video transmission in vehicle networks.