ATSAMG55G19A-UUT

Overview

The ATSAMG55G19A-UUT is a 32-bit ARM Cortex-M4 microcontroller with an integrated Floating Point Unit (FPU) and DSP instructions. It operates at a maximum clock frequency of 120 MHz and includes 512 Kbytes of Flash memory, 160 Kbytes of SRAM, and up to 16 Kbytes of Cache/I-D RAM. The device features 38 programmable I/O lines, an 8-channel 12-bit ADC, USB 2.0 Full Speed Device and OHCI Host capabilities, two I2S controllers, and eight flexible communication units supporting USART, SPI, and TWI interfaces.

Feature Summary

• High-performance processing via ARM Cortex-M4 core with FPU and DSP support
• Integrated crystal-less USB 2.0 Full Speed Device and Host OHCI controller
• Real-time event management system for peripheral-to-peripheral communication without CPU intervention
• Flexible low-power modes including Sleep, Wait, and Backup with asynchronous wakeup

Applications

• Consumer electronics devices
• Industrial control systems
• PC peripherals

Procurement Notes

Verify the specific ordering suffix 'UUT' corresponds to the WLCSP49 package and Reel carrier type as documented in the official Microchip ordering information table. Confirm that the industrial temperature range (-40°C to +85°C) aligns with your operational requirements. Ensure compatibility with the 49-ball WLCSP footprint during PCB layout design.

Selection Notes

Select this model over the SAM G55J19 variant if a smaller 49-pin WLCSP package is required rather than the 64-pin QFN or LQFP options. Consider the 38 available I/O lines against application pin counts, noting the J19 variant offers 48 I/Os. Verify that the 1.62V to 3.6V operating voltage range suits the target power supply architecture.

Part Context

This component belongs to the Atmel | SMART SAM G55 series of Flash microcontrollers based on the ARM Cortex-M4 RISC processor. The series combines high performance with small package options and a rich peripheral set designed for general-purpose low-power applications.

Replacement Considerations

ATSAMG55G19B-UUT

FAQ

Does the ATSAMG55G19A-UUT include a floating-point unit?

Yes, the device is based on the ARM Cortex-M4 processor which includes a Floating Point Unit (FPU).

What is the maximum operating speed of this microcontroller?

The processor operates at a maximum speed of 120 MHz.