ATSAMC21J17A-UUT

Overview

The ATSAMC21J17A-UUT is an automotive-grade ARM microcontroller from the ATSAMC21 series, featuring an ARM Cortex-M0+ core. It integrates 128 kB of Flash program memory and 16 kB of SRAM data RAM. The device supports a maximum clock frequency of 48 MHz and operates within a supply voltage range of 2.7 V to 5.5 V. It includes a 12-bit ADC with 20 channels and a 10-bit DAC. The component provides 52 I/O pins and supports interfaces including LIN, I2C, PMBus, Serial, SPI, and USART. It is housed in a WLCSP-56 package and is qualified to AEC-Q100 standards for operation between -40°C and +85°C.

Feature Summary

• Automotive qualification compliant with AEC-Q100 standards for reliability in vehicle environments.
• Integrated analog peripherals including a 12-bit ADC with multiple channels and a 10-bit DAC.
• Supports automotive communication protocols such as LIN and PMBus alongside standard serial interfaces.

Applications

• Automotive body electronics control modules
• In-vehicle sensor interface units
• Automotive gateway nodes requiring LIN connectivity

Procurement Notes

Verify the specific suffix UUT corresponds to the WLCSP-56 packaging configuration required for your design. Confirm that the AEC-Q100 qualification status meets your project's automotive reliability requirements. Ensure compatibility with the 2.7 V to 5.5 V operating voltage range. Check for moisture sensitivity level handling procedures during assembly. Validate pinout compatibility if replacing existing components in the layout.

Selection Notes

Select this part when automotive certification is mandatory for the application. Choose this model over non-automotive variants if long-term availability and thermal stability are critical. Consider the WLCSP-56 package constraints regarding PCB space and thermal dissipation. Evaluate the 48 MHz processing speed against real-time control requirements. Verify that the available I/O count and peripheral set satisfy the system interface needs.

Part Context

This component belongs to the Microchip ATSAMC21 family of low-power 32-bit microcontrollers based on the ARM Cortex-M0+ architecture. The family targets cost-sensitive embedded applications with a focus on energy efficiency. The ATSAMC21J17A variant specifically adds automotive qualification to the standard commercial features, expanding its use case into regulated industrial and vehicular sectors.

FAQ

What is the ADC resolution for the ATSAMC21J17A-UUT?

The device features a 12-bit Analog-to-Digital Converter with 20 available input channels.

Does this microcontroller support LIN bus communication?

Yes, the ATSAMC21J17A-UUT includes hardware support for the LIN protocol, suitable for automotive networks.

What is the maximum operating temperature for this component?

The specified maximum operating temperature is +85°C, consistent with its automotive qualification rating.