ATSAMD51J19A-AU

Overview

The ATSAMD51J19A-AU is a 32-bit ARM Cortex-M4F microcontroller from the SAM D51 family, manufactured by Microchip Technology. It features 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 operates within a supply voltage range of 1.71 V to 3.6 V. It supports an operating temperature range from -40°C to +85°C and is housed in a 64-TQFP package.

Feature Summary

• Integrates an ARM Cortex-M4F core with hardware floating-point unit for efficient digital signal processing.
• Includes multiple high-speed communication interfaces such as SPI, I2C, USART, LINbus, IrDA, QSPI, and USB.
• Features advanced analog peripherals including 24-channel 12-bit ADCs and two 12-bit DACs.
• Supports direct memory access (DMA) and various timer peripherals like PWM and I2S.

Applications

• Industrial control systems requiring robust peripheral integration
• Smart home devices utilizing wireless connectivity modules
• Medical equipment needing precise analog signal acquisition
• Consumer electronics with display and sensor interfaces

Procurement Notes

Verify the specific suffix 'AU' corresponds to the commercial temperature grade (-40°C to +85°C) and TQFP-64 packaging. Confirm RoHS compliance status through official Microchip documentation or authorized distributor certificates prior to procurement. Ensure design-in compatibility with required voltage levels and interface protocols.

Selection Notes

Select this component when a balance of processing power and peripheral richness is required for cost-sensitive applications. Compare against the ATSAME51 series if automotive qualification (AEC-Q100) or extended temperature ranges are necessary. Evaluate pin count and memory requirements against smaller variants like the ATSAMD51J18A if lower resource usage suffices.

Part Context

This MCU belongs to the SAM D51 family, designed for low-power, high-performance embedded applications. It shares architectural similarities with the SAM E51 and SAM G55 families but differs in specific peripheral sets and qualification standards. The J19 variant specifically denotes the 512 kB Flash configuration within the 64-pin form factor.

Replacement Considerations

ATSAMD51J18A-AU offers identical functionality with reduced Flash memory (256 kB). ATSAMD51J19A-AUT-EFP provides the same specifications but in tape-and-reel packaging for automated assembly. Cross-family alternatives like ATSAME51J19A require verification of automotive qualification requirements.