ATSAME51J20A-MU

Overview

The ATSAME51J20A-MU is an ARM Cortex M4F microcontroller from the ATSAME51 series, housed in a QFN-64 package. It features 1 MB of Flash memory and 256 kB of SRAM. The device operates at a maximum clock frequency of 120 MHz with a 32-bit data bus width. It includes 24-channel 12-bit ADCs and 12-bit DACs. Supply voltage ranges from 1.71 V to 3.63 V. Interfaces include CAN, I2C, I2S, LIN, QSPI, SPI, USART, and USB. It supports 51 I/O pins and meets AEC-Q100 qualification for automotive applications.

Feature Summary

• Integrated floating-point unit (FPU) within the ARM Cortex M4F core for enhanced mathematical processing performance.
• Supports automotive reliability standards through AEC-Q100 qualification.
• Provides extensive connectivity options including USB, CAN, and multiple serial communication interfaces.
• Features high-resolution analog-to-digital conversion with 24 channels and 12-bit precision.

Applications

• Automotive infotainment systems
• Industrial motor control applications
• Medical instrumentation devices

Procurement Notes

Verify the specific suffix 'MU' corresponds to the QFN-64 package configuration required for your design. Confirm that the component meets AEC-Q100 automotive grade requirements if intended for vehicle-mounted systems. Ensure compatibility with the 1.71 V to 3.63 V supply voltage range during power budgeting. Check for moisture sensitivity level handling requirements during assembly.

Selection Notes

Select this model when 1 MB of program storage and 256 kB of RAM are necessary for complex firmware. Choose the QFN-64 package for space-constrained PCB layouts requiring surface-mount technology. Opt for this variant over TQFP versions if lower profile height is critical. Ensure the design utilizes the available 51 I/O pins effectively.

Part Context

This component belongs to the Microchip ATSAME51 family, which targets high-performance embedded applications. It shares architectural similarities with other M4F-based MCUs but offers specific memory and interface configurations. The J20 designation typically indicates the 1 MB Flash and 256 kB RAM capacity within this product line.

Replacement Considerations

ATSAME51J20A-AU provides identical electrical specifications in a TQFP-64 package. ATSAMD51J20A-AUT offers similar capabilities within the ATSAMD51 family. Verify pinout compatibility and software library support before substituting with these alternatives.