ATSAME51N19A-AU

Overview

The ATSAME51N19A-AU is a 32-bit microcontroller from Microchip Technology's SAM E51 series, built on the ARM Cortex-M4F core. It operates at a maximum clock frequency of 120MHz and features 512KB of Flash memory and 192KB of RAM. The device supports a supply voltage range of 1.71V to 3.63V and includes integrated data converters such as 28x12-bit ADCs and 2x12-bit DACs. Connectivity options include USB, SPI, I2C, UART/USART, QSPI, MMC/SD, LINbus, IrDA, and EBI/EMI interfaces. It offers 81 I/O pins and is housed in a 100-TQFP package with an operating temperature range of -40°C to 85°C.

Feature Summary

• Integrated ARM Cortex-M4F processor with hardware floating-point unit for efficient signal processing
• Comprehensive peripheral set including multiple high-speed communication interfaces and DMA controller
• High-resolution analog-to-digital and digital-to-analog converters for precision measurement applications
• Flexible power management capabilities with multiple low-power sleep modes

Applications

• Industrial control systems requiring precise motor control and sensor interfacing
• Smart energy metering devices utilizing high-accuracy ADC measurements
• Medical equipment needing reliable real-time processing and connectivity
• IoT gateways and edge nodes supporting USB and wireless module integration

Procurement Notes

Verify the specific suffix 'AU' corresponds to the standard commercial temperature grade (-40°C to 85°C) and TQFP packaging when ordering. Confirm RoHS compliance status through official Microchip documentation or authorized distributors prior to procurement. Ensure design compatibility with the 1.71V to 3.63V supply voltage range for your target application environment.

Selection Notes

Select this component when a balance of processing power and peripheral richness is required within a moderate pin count. The 100-TQFP package provides accessible pinout for prototyping and production. Consider the 120MHz performance ceiling against power consumption constraints typical of battery-operated or thermally sensitive industrial enclosures.

Part Context

This part belongs to the SAM E51 family, designed for cost-sensitive applications requiring ARM Cortex-M4F performance. It shares architectural similarities with the ATSAMD51 series but targets different market segments. The N19 designation indicates specific memory and I/O configurations within the broader E51 product line, distinguishing it from variants with larger flash sizes or different packages.

Replacement Considerations

ATSAMD51J18A-AU: Lower pin count (64-pin) and reduced memory (256KB Flash, 128KB RAM). ATSAMD51N19A-AUT-EFP: Same electrical specs but in tape-and-reel packaging instead of tray. ATSAME51N19A-AUT: Higher temperature grade variant (-40°C to 105°C).