ATSAME51J18A-MU

Overview

The ATSAME51J18A-MU is a 32-bit ARM Cortex-M4F microcontroller from the SAM E51 family, manufactured by Microchip Technology. It features a maximum clock frequency of 120 MHz, 256 kB of Flash program memory, and 128 kB of SRAM data RAM. The device operates within a supply voltage range of 1.71 V to 3.6 V and supports an industrial temperature range from -40°C to +85°C. It includes 51 I/O pins, 24-channel 12-bit ADCs, and 2-channel 12-bit DACs. Connectivity interfaces include CAN, LIN, I2C, SPI, and USART. The component is housed in a QFN-64 package and holds AEC-Q100 qualification.

Feature Summary

• Integrated ARM Cortex-M4F core with floating-point unit for high-performance processing
• Automotive-grade reliability certified under AEC-Q100 standards
• Comprehensive analog subsystem with multiple 12-bit ADC channels and DAC outputs
• Robust connectivity suite supporting CAN, LIN, and standard serial protocols

Applications

• Automotive body control modules and gateway applications
• Industrial motor control systems requiring precise timing
• Smart energy metering devices with analog signal acquisition
• IoT edge nodes utilizing CAN or LIN bus communication

Procurement Notes

Verify the specific suffix 'MU' corresponds to the QFN-64 tray packaging configuration during sourcing. Confirm that the AEC-Q100 qualification status meets the target automotive application requirements. Ensure compatibility with the required operating temperature range of -40°C to +85°C. Cross-reference the datasheet for any recent product change notices affecting pinout or electrical characteristics.

Selection Notes

Select this component when a balance of automotive certification and rich peripheral integration is required. The inclusion of CAN and LIN interfaces makes it suitable for networked environments. Compare against the ATSAMD51 series if automotive qualification is not mandatory but similar performance is needed. Evaluate the 128 kB RAM limit against application stack requirements before finalizing the design.

Part Context

This part belongs to the SAM E51 family of microcontrollers designed for cost-sensitive automotive and industrial markets. It shares architectural similarities with the SAM D51 and SAM E53 families but offers specific interface combinations tailored for embedded control. The QFN-64 package provides a compact footprint for space-constrained PCB layouts while maintaining thermal efficiency.

Replacement Considerations

ATSAMD51J18A-MUT serves as a non-automotive qualified alternative with identical core specifications but lacks AEC-Q100 certification. ATSAME51J18A-AU is a TQFP-64 variant offering the same functional capabilities in a different package style.