ATSAMC21J18A-AUT64

Overview

The ATSAMC21J18A-AUT is a 32-bit microcontroller based on the ARM Cortex-M0+ core, operating at a maximum frequency of 48 MHz. It features 256 kB of Flash memory and 32 kB of SRAM. The device supports a supply voltage range of 2.7 V to 5.5 V and includes 52 general-purpose I/Os. It integrates multiple communication interfaces including SPI, USART, I2C, LIN, and CANbus. The component is housed in a 64-TQFP package and is qualified under AEC-Q100 standards for automotive applications.

Feature Summary

• Functional Safety (FuSa) compliant design architecture
• Integrated analog peripherals with 12-bit ADC and 10-bit DAC
• Automotive grade reliability certification

Applications

• Automotive body electronics control modules
• Industrial motor control systems
• Consumer appliance main controllers

Procurement Notes

Verify the specific suffix against official Microchip documentation to confirm package type and temperature range. Ensure the ordering code matches the required automotive qualification status. Cross-reference the datasheet revision history for any recent errata or pinout changes before finalizing procurement specifications.

Selection Notes

Select this model when a 5V tolerant interface is required alongside functional safety compliance. Compare with the ATSAMD21 series if automotive qualification is not necessary, as the SAMD variant operates at lower voltages. Consider the ATSAMC21G18A if fewer I/O pins are sufficient for the application design.

Part Context

This component belongs to the SAM C21 family of microcontrollers designed for functional safety applications. It shares the same core architecture as other J-series variants but offers specific memory configurations. The part is distinct from the SAM D21 series due to its wider voltage range and automotive certification.

Replacement Considerations

ATSAMC21J18A-MUT provides an equivalent function in a QFN-64 package.