ATSAME51J18A-AU-EFP

Overview

The ATSAME51J18A-AU-EFP is a 32-bit microcontroller from the SAM E51 family, featuring an ARM Cortex-M4F core operating at 120 MHz. It integrates 256 KB of flash memory and 128 KB of SRAM within a 64-TQFP package. The device supports a supply voltage range of 1.71 V to 3.63 V and includes 51 I/O lines. Connectivity options encompass USB, CAN, Ethernet, SPI, I2C, UART/USART, QSPI, LINbus, MMC/SD, IrDA, and EBI/EMI interfaces. Analog capabilities include 24-channel 12-bit ADCs and two 12-bit DACs.

Feature Summary

• Automotive-grade reliability certified under AEC-Q100 standards for extended temperature operation
• Integrated floating-point unit (FPU) within the Cortex-M4F core for efficient mathematical processing
• Comprehensive peripheral set including DMA controllers, multiple timers, and PWM modules
• Supports in-system programming via debug interfaces and standard communication protocols

Applications

• Industrial motor control systems requiring precise timing and analog feedback
• Automotive body electronics and gateway applications
• Smart energy metering devices with high accuracy requirements
• Medical equipment utilizing robust data acquisition and connectivity

Procurement Notes

Verify the specific suffix 'AU' indicates automotive qualification and tray packaging when sourcing. Confirm that the component meets RoHS3 compliance requirements for your region. Ensure compatibility with existing PCB footprints for the 64-TQFP package. Check for any recent production change notices regarding pinout or electrical characteristics before finalizing designs.

Selection Notes

Select this model when automotive certification is mandatory alongside high-performance computing needs. The combination of 256 KB flash and 128 KB RAM suits complex firmware architectures. Consider the extensive peripheral mix if direct interface to sensors, displays, or communication buses is required without external chips. Evaluate power consumption profiles against system battery life constraints.

Part Context

This MCU belongs to the SAM E51 series, designed for cost-sensitive automotive and industrial markets. It shares architectural similarities with the SAM D51 but adds automotive qualification. The series emphasizes low power consumption while maintaining high throughput through the Cortex-M4F processor and optimized bus matrix architecture.

Replacement Considerations

ATSAME51J19A-AU-EFP offers increased memory capacity (512 KB Flash, 192 KB RAM) with identical pinouts and features.