ATSAMG55J19B-MUT

Overview

The ATSAMG55J19B-MUT is a 32-bit microcontroller based on the ARM Cortex-M4 processor with an integrated Floating Point Unit (FPU). It operates at a maximum frequency of 120 MHz and includes 512 Kbytes of embedded Flash memory, 160 Kbytes of SRAM, and 8 Kbytes of ROM. The device features up to 48 programmable I/O lines, an 8-channel 12-bit ADC, USB 2.0 Full Speed Device and Host OHCI support, and multiple communication interfaces including USART, SPI, and TWI. It functions within a supply voltage range of 1.62V to 3.6V and is housed in a 64-lead QFN package.

Feature Summary

• ARM Cortex-M4 core with FPU and DSP instructions for high-performance processing
• Integrated crystal-less USB 2.0 controller supporting both Device and Host OHCI modes
• Real-time event management system enabling peripheral interaction without processor intervention
• Flexible clock system allowing independent peripheral clock frequencies

Applications

• Consumer electronics devices
• Industrial control systems
• PC peripherals

Procurement Notes

Verify the specific ordering suffix 'MUT' corresponds to the 64-lead QFN package and tape-and-reel carrier type as defined in the official Microchip ordering table. Confirm that the 'B' designation aligns with the required manufacturing revision level. Ensure compatibility with industrial temperature specifications (-40°C to +85°C) for the target application environment before finalizing procurement.

Selection Notes

Select this component when a 32-bit MCU with an FPU and integrated USB host capabilities is required. The 64-pin QFN package offers a compact footprint suitable for space-constrained designs. Consider the 176K x 8 total RAM configuration if complex data handling or large buffer requirements are present. Verify that the 48 available I/O lines meet the interface count needs for the specific system architecture.

Part Context

This part belongs to the Atmel SMART SAM G55 series of microcontrollers. The series combines high-performance processing with low-power operation and a rich peripheral set. The J19 variant specifically provides 512 Kbytes of Flash and supports up to 48 I/O lines, distinguishing it from the G19 variant which offers fewer pins but utilizes a WLCSP package.

Replacement Considerations

ATSAMG55J19A-MUT