ATSAMC21J17A-AUT

Overview

The ATSAMC21J17A-AUT is an automotive-grade ARM microcontroller from Microchip Technology, based on the 32-bit ARM Cortex-M0+ core. It operates at a maximum clock frequency of 48 MHz and features 128 kB of program memory and 16 kB of data RAM. The device supports a supply voltage range of 2.7 V to 5.5 V and includes 52 I/O pins. Key peripherals include a 12-bit ADC with 20 channels, a 10-bit DAC, and multiple communication interfaces such as LIN, I2C, SPI, and USART. It is housed in a 64-TQFP package and certified to AEC-Q100 standards for operation between -40°C and +85°C.

Feature Summary

• Automotive qualification compliant with AEC-Q100 standards for reliable operation in vehicle environments.
• Integrated Functional Safety (FuSa) capabilities designed to support safety-critical applications.
• Robust communication peripherals including SERCOM modules and CAN FD for noisy industrial settings.
• Advanced motor control peripherals and Peripheral Touch Control (PTC) for user interface development.

Applications

• Automotive body electronics and control systems
• Industrial motor control applications
• Commercial devices requiring robust communication in noisy environments

Procurement Notes

Verify that the specific part number suffix corresponds to the required temperature grade and packaging format. Confirm AEC-Q100 certification status if automotive compliance is mandatory for the design. Ensure compatibility with the intended operating voltage range of 2.7 V to 5.5 V. Check for any recent Product Change Notifications regarding assembly or labeling changes.

Selection Notes

Select this component when automotive reliability and functional safety are primary requirements. The 5V tolerance makes it suitable for direct interfacing with legacy automotive sensors without level shifting. Consider the 128 kB flash limit for complex firmware needs. Evaluate the 52 available I/O pins against system connectivity requirements before choosing alternative pin counts in the SAM C21 family.

Part Context

This MCU belongs to the Microchip SAM C21 series, which targets industrial and commercial applications in noisy environments. The series is characterized by its 5V tolerant architecture and integration of advanced peripherals like CAN FD and PTC. It serves as a bridge between standard microcontrollers and higher-end automotive solutions, offering a balance of performance and cost-effectiveness for embedded control tasks.

Replacement Considerations

ATSAMC21J18A-AUT offers increased memory capacity within the same package and qualification profile.

FAQ

What is the maximum operating temperature for the ATSAMC21J17A-AUT?

The device is rated for an extended industrial temperature range, with a maximum operating temperature of +85°C.

Does this microcontroller support automotive communication protocols?

Yes, the ATSAMC21J17A-AUT includes hardware support for LIN and CAN FD protocols, making it suitable for automotive networks.

How many analog input channels are available on this device?

The microcontroller features a 12-bit ADC with 20 available input channels for analog signal acquisition.