ATSAMD51N19A-AU-EFP

Overview

The ATSAMD51N19A-AU-EFP is a 32-bit microcontroller from the Microchip SAM D51 series, featuring an ARM Cortex-M4F core with a maximum clock frequency of 120 MHz. It integrates 512 kB of Flash memory and 192 kB of SRAM within a 100-TQFP package. The device supports a supply voltage range of 1.71 V to 3.63 V and operates between -40°C and +85°C. Key peripherals include 24-channel 12-bit ADCs, two 12-bit DACs, and interfaces such as USB, SPI, I2C, USART, and QSPI.

Feature Summary

• Integrated ARM Cortex-M4F processor with hardware floating-point unit for efficient signal processing
• High-resolution analog conversion capabilities with multiple 12-bit ADC channels and DAC outputs
• Comprehensive connectivity suite including USB Full-Speed interface and standard serial communication protocols

Applications

• Industrial control systems requiring robust peripheral integration
• Consumer electronics utilizing USB connectivity and high-speed data acquisition
• Smart sensor nodes needing extended flash performance and low-power operation

Procurement Notes

Verify the specific suffix 'AU' against official Microchip documentation to confirm tape-and-reel packaging versus tray configuration, as datasheets may list variations. Ensure the component meets AEC-Q100 qualification requirements if automotive applications are intended. Cross-reference the manufacturer part number with current RoHS compliance status before finalizing procurement orders.

Selection Notes

Select this model when a balance of moderate pin count (81 I/O) and substantial memory (512 kB Flash) is required in a TQFP-100 form factor. It serves as a suitable upgrade path from smaller SAMD51 variants like the J19 or N18 series. Consider the 120 MHz operating speed and available DMA channels for applications demanding real-time processing without external memory controllers.

Part Context

This component belongs to the SAM D51 family, designed for high-performance embedded applications. It shares architectural similarities with the ATSAME51 series but lacks certain advanced security features found in the E5x line. The device is positioned for cost-sensitive designs requiring Cortex-M4F capabilities without the full complexity of higher-end Microchip MCUs.

Replacement Considerations

Direct substitutes within the same package and memory configuration include the ATSAMD51N19A-AUT-EFP (tape-and-reel variant). For lower memory options, the ATSAMD51N18A series may be considered if 256 kB Flash suffices. Verify pin compatibility and software register mapping when migrating between these closely related part numbers.