ATSAMG55J19B-MU

Overview

The ATSAMG55J19B-MU 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 Flash memory, 160 Kbytes of SRAM, and 8 Kbytes of ROM. The device features up to 48 programmable I/O lines, eight flexible communication units (USART, SPI, TWI), USB 2.0 Full Speed Device and Host OHCI support, two I2S controllers, and an 8-channel 12-bit ADC. 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 Full Speed Device and Host OHCI controller
• Real-time event management system allowing peripheral interaction without processor intervention
• Three software-selectable low-power modes including SleepWalking capability

Applications

• Consumer electronics devices
• Industrial control systems
• PC peripherals

Procurement Notes

Verify the specific ordering suffix 'MU' corresponds to the 64-lead QFN package and Tray carrier type as documented in the official Microchip ordering information table. Confirm that the 'B' suffix indicates the correct Manufacturing Revision Level (MRL) required for the design. Ensure compatibility with the specified industrial temperature range of -40°C to +85°C.

Selection Notes

Select this component when a 64-pin surface-mount QFN package is required instead of the LQFP or WLCSP options available in the SAM G55 series. It provides 48 I/O lines, which is double the count of the G-series variants. Consider the internal voltage regulator and single-supply operation capabilities for simplified power design.

Part Context

This part belongs to the Atmel SMART SAM G55 family of 32-bit Flash microcontrollers. It shares the same core architecture and peripheral set as the ATSAMG55J19A-MU but differs in manufacturing revision level. The J-series designation distinguishes it from the G-series by offering a higher number of available I/O pins.

Replacement Considerations

ATSAMG55J19A-MU