ATSAME54P19A-AF

Overview

The ATSAME54P19A-AF is a 32-bit ARM Cortex-M4F microcontroller from the SAM E54 family, manufactured by Microchip Technology. It features a maximum clock frequency of 120 MHz and includes 512 kB of Flash program memory alongside 192 kB of SRAM data RAM. The device is housed in a TQFP-64 package and provides 51 general-purpose I/O pins. 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. Key peripherals include a 12-bit ADC with 24 channels, a 12-bit DAC, and multiple communication interfaces such as SPI, I2C, USART, LIN, and USB.

Feature Summary

• Integrated ARM Cortex-M4F core with floating-point unit for efficient digital signal processing.
• Supports automotive reliability standards through AEC-Q100 qualification.
• Includes comprehensive connectivity options with built-in Ethernet and USB capabilities.
• Features high-resolution analog-to-digital conversion with multiple input channels.

Applications

• Automotive infotainment systems
• Industrial motor control applications
• Smart home automation hubs
• Medical instrumentation devices

Procurement Notes

Verify the specific suffix 'AF' corresponds to the TQFP-64 package and extended temperature rating during procurement. Confirm that the ordering part number matches the required pin count and memory configuration. Ensure compatibility with existing board layouts regarding the surface-mount package dimensions. Check for any recent product change notifications affecting packaging or specifications.

Selection Notes

Select this component when a balance of processing power and peripheral richness is required for embedded control tasks. The 120 MHz speed suits real-time applications needing fast response times. Consider the 51 I/O count against system interface requirements. The extended temperature range makes it suitable for harsh environments where standard commercial grade parts may fail.

Part Context

This microcontroller belongs to the SAM E54 series, designed for high-performance applications requiring robust connectivity and security. It shares architectural similarities with other ARM Cortex-M4 devices but offers specific integration of Ethernet and USB controllers tailored for networked endpoints. The series emphasizes low power consumption while maintaining high throughput for complex algorithms.

Replacement Considerations

ATSAME54P19A-AU: Same core and memory but limited to +85°C operating temperature. ATSAME54P20A-AF: Higher capacity variant with 1 MB Flash and 256 kB SRAM in a TQFP-128 package. ATSAME53J19A-AF: Similar performance profile but lacks integrated Ethernet controller.