ATSAMG55J19B-AUT

Overview

The ATSAMG55J19B-AUT is a 32-bit ARM Cortex-M4 microcontroller with an integrated Floating Point Unit (FPU) and DSP instructions. It features 512 Kbytes of Flash memory, up to 176 Kbytes of SRAM, and operates at a maximum clock frequency of 120 MHz. The device includes eight flexible communication units supporting USART, SPI, and TWI interfaces, alongside two I2S controllers and a crystal-less USB 2.0 Full-Speed Device/Host OHCI interface. It provides 48 programmable I/O lines, an 8-channel 12-bit ADC, and supports industrial operating temperatures from -40°C to +85°C in a 64-pin LQFP package.

Feature Summary

• Integrates a high-performance ARM Cortex-M4 processor with FPU and DSP capabilities for efficient signal processing.
• Includes a crystal-less USB 2.0 Full-Speed Device and Host OHCI controller with an on-chip transceiver.
• Features multiple low-power modes including Sleep, Wait, and Backup with asynchronous wakeup support.
• Provides rich peripheral connectivity with dual I2S controllers, PDM microphone interface, and extensive DMA channels.

Applications

• Consumer electronics requiring audio processing via I2S or PDM interfaces
• Industrial control systems utilizing robust communication protocols like CAN or LIN over USART
• PC peripherals and data acquisition devices leveraging the high-speed USB host capabilities

Procurement Notes

Verify that the specific ordering suffix 'AUT' corresponds to the Reel carrier type as documented in the manufacturer's official ordering information table. Confirm the package designation matches the required 64-lead LQFP form factor. Ensure the component grade aligns with the specified industrial temperature range requirements for the target application environment.

Selection Notes

Select this model when a 64-pin surface-mount solution is required for designs needing integrated USB host functionality without external transceivers. The choice between 'A' and 'B' suffixes depends strictly on the preferred manufacturing carrier type, as the core silicon specifications remain identical within the SAM G55J19 configuration family.

Part Context

This component belongs to the Atmel SMART SAM G55 series of microcontrollers based on the ARM Cortex-M4 architecture. The J19 variant specifically designates the configuration with 512 Kbytes of Flash and 48 available I/O lines, distinguishing it from the G19 variant which offers fewer pins but utilizes a WLCSP package format.

Replacement Considerations

ATSAMG55J19A-AUT serves as a direct functional substitute differing only in the packaging carrier type (Tray versus Reel). Other variants within the SAM G55J19 family share identical core specifications but may utilize different package types such as QFN64.