ATSAM3N1AA-MU

Overview

The ATSAM3N1AA-MU is an ARM microcontroller from the SAM3N series, featuring a 32-bit ARM Cortex-M3 core operating at a maximum clock frequency of 48 MHz. It integrates 64 kB of Flash program memory and 8 kB of SRAM data memory within a 64-pin QFN package. The device supports a supply voltage range of 1.62 V to 1.95 V and operates within an industrial temperature range of -40°C to +85°C. Peripheral interfaces include SPI, UART, and I2C.

Feature Summary

• Integrates a high-performance 32-bit ARM Cortex-M3 processor core with hardware multiply and divide instructions.
• Includes on-chip non-volatile Flash memory for code storage and static RAM for data handling.
• Provides multiple communication peripherals including Serial Peripheral Interface (SPI) and Universal Asynchronous Receiver/Transmitter (UART).
• Features low-power operation modes suitable for battery-powered applications.

Applications

• Industrial control systems requiring robust processing in harsh environments.
• Consumer electronics utilizing low-voltage power supplies.
• Embedded sensor nodes with serial communication requirements.
• General-purpose embedded applications needing compact surface-mount packaging.

Procurement Notes

Verify component authenticity through authorized Microchip distributors or certified suppliers. Confirm the specific suffix indicates the correct package variant and temperature rating. Check for moisture sensitivity level compliance during handling. Ensure the part number matches the exact memory configuration required for your design.

Selection Notes

Select this model when a 64 kB Flash capacity and 8 kB RAM are sufficient for the application firmware. Choose the QFN-64 package for space-constrained PCB layouts. Ensure the system power rail aligns with the 1.62 V to 1.95 V operating range. Verify that the available GPIO count meets the interface requirements.

Part Context

This component belongs to the Atmel SAM3N family of 32-bit ARM Cortex-M3 microcontrollers. The series is designed for cost-sensitive applications requiring moderate performance and low power consumption. The 'MU' suffix typically denotes the QFN package type and industrial temperature grade within the product line.

Replacement Considerations

Consult official Microchip documentation for verified cross-reference parts. Consider other SAM3N variants with different memory sizes if pin compatibility is maintained. Verify that any substitute maintains the same package dimensions and thermal characteristics.