ATSAMG55J19A-MUT

Overview

The ATSAMG55J19A-MUT is a 32-bit microcontroller based on the ARM Cortex-M4 core, operating at a maximum frequency of 120MHz. It features 512KB of in-system programmable Flash memory and 176KB of SRAM. The device includes an integrated floating-point unit (FPU) and supports a supply voltage range of 1.62V to 3.6V. Connectivity options include USB Full-Speed, I2C, SPI, USART, and I2S interfaces. It provides up to 48 general-purpose I/Os and incorporates multiple peripherals such as DMA, PWM, and watchdog timers. The component is housed in a 48-pin QFN package and operates within an industrial temperature range of -40°C to +85°C.

Feature Summary

• Integrates an ARM Cortex-M4 processor with hardware floating-point support for efficient signal processing.
• Provides extensive connectivity through built-in USB Full-Speed, I2C, SPI, USART, and I2S controllers.
• Includes robust peripheral sets featuring Direct Memory Access (DMA), Pulse Width Modulation (PWM), and Watchdog Timers.
• Offers high-density non-volatile storage with 512KB Flash and 176KB SRAM for complex application execution.

Applications

• Industrial control systems requiring deterministic real-time performance
• USB-enabled human-machine interface (HMI) devices
• Audio processing applications utilizing I2S interfaces
• Data logging equipment with significant memory requirements

Procurement Notes

Verify the specific suffix 'MUT' corresponds to the 48-QFN package and tape-and-reel packaging configuration. Confirm that the industrial temperature grade (-40°C to +85°C) aligns with environmental design constraints. Ensure compatibility with the 1.62V to 3.6V supply voltage range for power management circuits. Cross-reference the latest datasheet revision for any errata or pinout modifications prior to finalizing the bill of materials.

Selection Notes

Select this component when a balance of processing power and connectivity is required without the complexity of higher-end series. The Cortex-M4 FPU makes it suitable for mathematical-intensive tasks compared to M0+ variants. Consider the 48-pin QFN footprint for space-constrained designs. Evaluate the 120MHz speed against lower-frequency alternatives if power consumption is a critical constraint.

Part Context

This part belongs to the SAM G55 family, designed for applications needing robust connectivity and moderate processing capabilities. It sits between the lower-power SAM C20 series and the higher-performance SAM V71 series. The family emphasizes ease of integration with standard communication protocols and offers a scalable architecture for various embedded control applications.

Replacement Considerations

ATSAMG55J19A-AU: Same core and memory but in LQFP-64 package. ATSAMD51J19A-AU: Similar performance but different peripheral set and architecture. ATSAME51J19A-AU: Pin-compatible alternative with enhanced security features and different peripheral configurations.