ATSAMD51N19A-AF

Overview

The ATSAMD51N19A-AF is an ARM-based microcontroller from the Microchip ATSAMD51 family, featuring a Cortex-M4F core with a maximum clock frequency of 120 MHz. It integrates 512 kB of Flash program memory and 192 kB of SRAM data RAM within a 100-pin TQFP package. The device supports a supply voltage range of 1.71 V to 3.6 V and operates across an extended temperature range of -40°C to +125°C. Key peripherals include multiple communication interfaces such as USB, SPI, I2C, USART, and LIN, alongside 81 general-purpose I/Os.

Feature Summary

• Integrated ARM Cortex-M4F processor core with hardware floating-point unit for efficient signal processing
• Supports automotive-grade reliability standards including AEC-Q100 qualification
• Includes comprehensive connectivity options with built-in USB controller and standard serial interfaces
• Features high-resolution analog-to-digital conversion capabilities for precise sensor interfacing

Applications

• Automotive infotainment systems requiring extended temperature operation
• Industrial control applications utilizing LIN bus communication
• Consumer electronics devices needing robust USB connectivity
• IoT gateways requiring reliable wireless or wired network integration

Procurement Notes

Verify the specific suffix 'AF' against official Microchip documentation to confirm the extended temperature grade and tray packaging configuration. Ensure compatibility with your PCB footprint for the 100-TQFP package. Cross-reference the datasheet revision history for any silicon errata updates relevant to mass production designs.

Selection Notes

Select this component when design requirements demand automotive-grade durability combined with high-performance computing capabilities. The 512 kB Flash size accommodates complex firmware while the 120 MHz speed ensures responsive real-time processing. Consider the 100-pin form factor if extensive peripheral access is necessary without increasing board space significantly.

Part Context

This part belongs to the ATSAMD51 series, designed for applications requiring high performance and low power consumption. It shares architectural similarities with other members like the ATSAMD51J19A but differs in pin count and memory configuration. The N-series designation typically indicates a higher pin count variant compared to J-series parts within the same family.

Replacement Considerations

Direct substitutes may include ATSAMD51N19A-AUT for tape-and-reel packaging or ATSAMD51N20A-AF for increased Flash capacity. Verify pinout compatibility before swapping to ensure seamless integration into existing hardware layouts.