ATSAME51J20A-AUT

Overview

The ATSAME51J20A-AUT is an ARM microcontroller from the ATSAME51 series, featuring a 32-bit ARM Cortex-M4F core with a floating-point unit. It operates at a maximum clock frequency of 120 MHz and includes 1 MB of Flash memory and 256 kB of SRAM. The device provides 51 I/O pins and supports multiple communication interfaces including USB, CAN, I2C, SPI, USART, I2S, LIN, and QSPI. It features a 12-bit ADC with 24 channels and a 12-bit DAC. Operating voltage ranges from 1.71 V to 3.63 V, with an operating temperature range of -40°C to +85°C. It is AEC-Q100 qualified and packaged in TQFP-64.

Feature Summary

• Integrated capacitive touch sensing peripheral (PTC) supporting self-capacitance configurations for touch keys and sliders.
• Extended Flash Performance architecture designed to optimize code execution speed and power efficiency.
• Hardware-accelerated cryptographic engine supporting AES, RSA, ECC, and SHA algorithms for secure data processing.

Applications

• Industrial automation controllers requiring robust communication protocols like CAN and Ethernet.
• Smart home devices utilizing integrated touch sensing capabilities for user interfaces.
• Medical equipment applications necessitating AEC-Q100 qualification and high reliability.
• Automotive infotainment systems leveraging USB connectivity and extended temperature operation.

Procurement Notes

Verify the specific suffix 'AUT' indicates tape and reel packaging rather than tray. Confirm that the AEC-Q100 qualification aligns with your automotive grade requirements. Ensure compatibility with 3.3V logic levels across all I/O pins. Check for moisture sensitivity level compliance during storage and handling procedures.

Selection Notes

Select this component when 1 MB of program memory and 256 kB of RAM are required within a 64-pin package. Choose over variants with less memory if complex firmware or large data buffers are needed. Consider the integrated PTC peripheral if external touch controllers are undesirable. Verify interface needs such as CAN and USB against other family members.

Part Context

This part belongs to the ATSAME51 family, which targets cost-sensitive embedded applications. It shares the same core and peripheral set as the ATSAMD51 but offers enhanced flash performance and specific automotive qualifications. It serves as a bridge between standard MCU capabilities and higher-end processors requiring real-time control and connectivity.

Replacement Considerations

ATSAME51J20A-AU is the tray-packaged equivalent with identical electrical characteristics. ATSAMD51J20A-AUT offers similar specifications but lacks the extended flash performance optimization. ATSAME51J19A-AU provides reduced memory capacity (512 KB Flash, 192 KB RAM) for lower-cost applications.