ATSAM3N4AA-MU

Overview

The ATSAM3N4AA-MU is an ARM microcontroller within the SAM3N series, featuring a 32-bit ARM Cortex-M3 core. It integrates 256 kB of Flash program memory and operates at a maximum clock frequency of 48 MHz. The device provides 79 general-purpose I/O pins and supports multiple communication interfaces including SPI and UART. It functions within a supply voltage range of 1.62 V to 1.95 V and is rated for industrial temperatures from -40°C to +85°C. The component is housed in a 48-pin QFN package.

Feature Summary

• Integrates a 32-bit ARM Cortex-M3 processor core for efficient code execution.
• Includes non-volatile Flash memory for persistent program storage.
• Supports standard serial communication protocols such as SPI and UART.
• Designed for operation across a wide industrial temperature range.

Applications

• Industrial control systems requiring robust MCU performance
• Consumer electronics utilizing low-power ARM architectures
• Embedded applications with limited pin count requirements

Procurement Notes

Verify component authenticity through authorized Microchip Technology distributors or certified suppliers. Confirm that the part matches the specific suffix MU for the QFN-48 package variant. Check current lifecycle status as availability may be restricted due to end-of-life conditions. Ensure compliance with relevant RoHS directives before integration into final assemblies.

Selection Notes

Select this model when a 256 kB Flash capacity and 79 I/O lines are required within a compact 48-pin footprint. Compare against other SAM3N variants if different memory sizes or package types like LQFP are preferred. Ensure the 1.62 V to 1.95 V operating voltage aligns with the system power design. Verify that the 48 MHz speed meets the processing demands of the target application.

Part Context

This component belongs to the Microchip SAM3N family of 32-bit microcontrollers based on the ARM Cortex-M3 architecture. The series offers various memory configurations and package options to suit diverse embedded needs. The ATSAM3N4AA-MU specifically addresses applications needing moderate Flash size and extensive I/O connectivity in a small form factor.

Replacement Considerations

Consult official Microchip documentation for direct pin-to-pin replacements within the SAM3N series. Verify compatibility regarding memory size and package dimensions before substitution.