ATSAMD51J18A-AFT

Overview

The ATSAMD51J18A-AFT is an ARM Cortex-M4F microcontroller from the SAM D51 series, manufactured by Microchip Technology. It features a 32-bit architecture with a maximum clock frequency of 120 MHz. The device includes 256 kB of Flash program memory and 128 kB of SRAM data RAM. It provides 51 general-purpose I/O pins and operates within a supply voltage range of 1.71 V to 3.6 V. The component supports an extended operating temperature range from -40°C to +125°C and is housed in a 64-pin TQFP package.

Feature Summary

• Integrated floating-point unit (FPU) for efficient mathematical processing
• Supports USB connectivity for communication interfaces
• Includes advanced analog peripherals such as 24-channel 12-bit ADC and 2-channel 12-bit DAC
• Certified to AEC-Q100 standards for automotive reliability

Applications

• Automotive infotainment systems
• Industrial control applications requiring extended temperature tolerance
• USB-enabled peripheral devices
• Data acquisition systems utilizing high-resolution analog inputs

Procurement Notes

Verify the specific suffix 'AFT' corresponds to the tape-and-reel packaging format and the extended industrial temperature grade (-40°C to +125°C). Confirm that the AEC-Q100 qualification status meets your project's automotive reliability requirements. Ensure compatibility with the 64-TQFP footprint during PCB layout. Cross-reference the latest datasheet revision to confirm pinout consistency and any silicon errata relevant to the SAM D51 family.

Selection Notes

Select this component when a Cortex-M4F core with hardware FPU support is required alongside robust analog capabilities. The extended temperature range makes it suitable for harsh environments where standard commercial grade parts would fail. Consider the 256 kB Flash size against application code complexity. Verify that the 120 MHz speed meets real-time processing demands without excessive power consumption.

Part Context

This part belongs to the SAM D51 family, which targets cost-sensitive applications needing high performance and rich analog features. It shares architectural similarities with the ATSAME51 series but differs in specific peripheral configurations and certification levels. The J18 designation indicates the specific memory configuration and I/O count within the broader product line.

Replacement Considerations

ATSAMD51J18A-AU offers identical electrical specifications but typically comes in tray packaging rather than tape-and-reel. ATSAMD51J18A-AUT-EFP provides the same core functionality with tape-and-reel packaging but may have different moisture sensitivity or labeling attributes.