ATSAME51J18A-AF

Overview

The ATSAME51J18A-AF is a 32-bit microcontroller based on the ARM Cortex-M4F core, operating at a maximum frequency of 120 MHz. It features 256 KB of in-system programmable flash memory and 128 KB of SRAM. The device includes 24 channels of 12-bit analog-to-digital converters and two 12-bit digital-to-analog converters. It supports a supply voltage range of 1.71 V to 3.6 V and operates within an extended temperature range of -40°C to +125°C. The component is housed in a 64-pin TQFP package with 51 available I/O lines.

Feature Summary

• Integrated floating-point unit for efficient mathematical processing
• Automotive-grade qualification compliant with AEC-Q100 standards
• Extended industrial temperature operation capability
• Comprehensive connectivity suite including USB and CAN interfaces

Applications

• Automotive infotainment systems
• Industrial motor control applications
• Smart energy metering devices
• Medical instrumentation equipment

Procurement Notes

Verify the specific suffix against official Microchip documentation to confirm the extended temperature rating and automotive qualification status. Ensure the ordering part number matches the required package type and tape-and-reel configuration. Cross-reference silicon errata sheets for any known hardware limitations relevant to the design implementation.

Selection Notes

Select this component when automotive reliability and wide thermal tolerance are mandatory requirements. The combination of high-speed processing and rich analog peripherals makes it suitable for complex signal processing tasks. Evaluate pin compatibility if replacing older SAM E51 variants to ensure mechanical fit without redesigning the PCB layout.

Part Context

This device belongs to the SAM E51 family, which targets robust embedded applications requiring high performance and connectivity. It shares architectural similarities with other SAM D51 series parts but adds automotive certification and extended temperature ranges. The family emphasizes low power consumption alongside high computational throughput for real-time control loops.

Replacement Considerations

ATSAMD51J18A-AU

FAQ

What distinguishes the ATSAME51J18A-AF from standard commercial grade parts?

The primary distinction is its automotive qualification under AEC-Q100 standards and its ability to operate reliably across an extended temperature range up to 125°C.

Does this microcontroller include a floating-point unit?

Yes, the ARM Cortex-M4F core integrates a single-precision floating-point unit to accelerate mathematical computations.