ATSAME51J19A-AF

Overview

The ATSAME51J19A-AF is an ARM-based microcontroller from the Microchip SAM E51 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 512 kB of Flash program memory and 192 kB of SRAM data RAM. The device provides 51 general-purpose I/Os and supports a supply voltage range of 1.71 V to 3.6 V. It integrates multiple communication interfaces including CAN, LIN, I2C, SPI, and USART. The component is housed in a TQFP-100 package and is qualified under AEC-Q100 standards for automotive applications.

Feature Summary

• Integrated ARM Cortex-M4F processor with hardware floating-point support for efficient signal processing
• Automotive-grade qualification compliant with AEC-Q100 reliability standards
• Comprehensive connectivity suite supporting CAN, LIN, I2C, SPI, and USART protocols
• High-resolution analog peripherals including 24-channel 12-bit ADC and 2-channel 12-bit DAC

Applications

• Automotive body control modules and gateway systems
• Industrial motor drives and automation controllers
• Smart energy metering and utility infrastructure devices
• Advanced human-machine interface (HMI) panels

Procurement Notes

Verify the specific suffix 'AF' against official Microchip documentation to confirm the exact package type and temperature grade, as suffixes define physical form factors. Ensure compliance with RoHS directives and REACH regulations for your target market. Confirm that the selected variant meets the required operating temperature range and humidity sensitivity levels for your specific assembly process.

Selection Notes

Select this component when a robust automotive-grade MCU with high-performance computing capabilities is required. The combination of the Cortex-M4F core and extensive peripheral set makes it suitable for complex control algorithms. Consider the 512 kB Flash capacity for large firmware requirements and the rich I/O count for interfacing with multiple sensors and actuators without external multiplexers.

Part Context

This part belongs to the SAM E51 family, designed for cost-sensitive automotive and industrial applications requiring high reliability. It shares architectural similarities with the SAM D51 series but adds automotive qualification and enhanced peripheral sets. The family emphasizes low power consumption while maintaining high processing throughput for real-time control tasks.

Replacement Considerations

Consult official Microchip substitution guides for verified alternatives within the SAM E51 or SAM D51 families. Cross-reference pinouts and electrical specifications carefully when considering non-Microchip equivalents to ensure functional compatibility.