ATSAMD51J19A-UNT

Overview

The ATSAMD51J19A-UNT is a Microchip Technology microcontroller from the SAM D51 family, featuring an ARM Cortex-M4F core with a maximum clock frequency of 120 MHz. It integrates 512 kB of Flash program memory and 192 kB of SRAM data RAM within a 64-pin UQFN package. The device supports a supply voltage range of 1.71 V to 3.63 V and includes 51 general-purpose I/Os. Key peripherals include a 12-bit ADC with 24 channels, dual 12-bit DACs, and interfaces such as USB, SPI, I2C, USART, LIN, QSPI, and I2S.

Feature Summary

• Integrated floating-point unit (FPU) for efficient mathematical processing
• Supports machine learning applications via dedicated hardware acceleration
• Includes capacitive touch sensing capabilities through the Peripheral Touch Controller (PTC)
• Features multiple communication interfaces including USB Full-Speed

Applications

• Industrial control systems requiring robust connectivity
• Internet of Things (IoT) nodes with wireless integration
• Consumer electronics utilizing capacitive touch user interfaces
• Medical devices adhering to automotive-grade reliability standards

Procurement Notes

Verify the specific suffix 'UNT' against official Microchip documentation to confirm the exact package type and temperature grade, as datasheets may list variations like AU or MU. Ensure compatibility with your PCB footprint design for the UQFN form factor. Check for RoHS compliance status and moisture sensitivity level requirements during assembly. Confirm availability of development tools compatible with the SAM D51 architecture.

Selection Notes

Select this component when a balance of high performance and low power consumption is required for embedded applications. The inclusion of an FPU makes it suitable for signal processing tasks. Consider the extensive peripheral set if direct interface with sensors or communication buses is needed without additional controllers. Evaluate the thermal performance of the UQFN package for your enclosure constraints.

Part Context

This part belongs to the SAM D51 series, designed for high-performance, low-power applications. It shares architectural similarities with the ATSAME51 but lacks certain automotive-specific features found in other variants. The series is optimized for IoT and industrial markets, offering flexibility through its rich peripheral suite and programmable logic capabilities.

Replacement Considerations

ATSAMD51J19A-AU: Different package (TQFP). ATSAMD51J19A-MU: Different package (QFN). ATSAMD51J19A-AUT-EFP: Tape and reel packaging variant.