ATSAMD51G19A-MU

Overview

The ATSAMD51G19A-MU is a 32-bit microcontroller from the Microchip SAM D51 series, 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. The device provides 51 general-purpose I/O pins and includes a 12-bit ADC with 24 channels and a 12-bit DAC. Operating within a voltage range of 1.71 V to 3.6 V, it supports interfaces such as I2C, SPI, USART, LIN, and USB. The component is housed in a QFN-64 package and is rated for an industrial temperature range of -40°C to +85°C.

Feature Summary

• Integrates an ARM Cortex-M4F processor core with hardware floating-point unit support for efficient signal processing.
• Includes high-resolution analog peripherals comprising a 24-channel 12-bit ADC and dual 12-bit DACs.
• Supports multiple communication protocols including USB, SPI, I2C, USART, and LIN bus interfaces.
• Features robust connectivity options with up to 51 configurable I/O pins for versatile system integration.

Applications

• Industrial control systems requiring precise analog signal acquisition and processing.
• Automotive applications meeting AEC-Q100 qualification standards.
• Consumer electronics utilizing USB connectivity and low-power operation.
• Smart sensor nodes employing LIN bus communication for networked devices.

Procurement Notes

Verify the specific suffix 'MU' corresponds to the QFN-64 package configuration required for your PCB layout. Confirm that the design accounts for the moisture sensitivity level indicated in the datasheet. Ensure the operating voltage supply aligns with the specified 1.71 V to 3.6 V range. Check for any recent product change notices regarding assembly sites or material declarations.

Selection Notes

Select this component when a balance of processing power and analog capabilities is needed in a compact footprint. The 512 kB Flash size accommodates complex firmware, while the 192 kB RAM supports data buffering. Consider the QFN-64 package for space-constrained designs compared to larger TQFP alternatives. Evaluate thermal dissipation requirements given the dense pin pitch of the QFN package.

Part Context

This part belongs to the SAM D51 family, which targets cost-sensitive embedded applications needing ARM Cortex-M4 performance. It shares architectural similarities with other J and N variants but differs in pin count and peripheral availability. The G-series designation typically indicates specific I/O configurations and package types within the broader SAM D51 ecosystem.

Replacement Considerations

Direct substitutes include other SAM D51 variants with identical memory sizes but different packages, such as ATSAMD51J19A-AU (TQFP) or ATSAMD51N19A-AUT-EFP (larger TQFP). Verify pin compatibility and peripheral mapping before substitution. Cross-referencing with ATSAME51 series may require software adaptation due to architectural differences.