ATSAM3N00AA-MU

Overview

The ATSAM3N00AA-MU is a 32-bit microcontroller based on the ARM Cortex-M3 core, operating at a maximum frequency of 48 MHz. It features 16 KB of embedded Flash memory and 4 KB of SRAM. The device includes an 8-channel, 10-bit analog-to-digital converter (ADC). It supports communication interfaces including I2C, SPI, and UART. The unit operates within a supply voltage range of 1.62 V to 3.6 V and functions in temperatures from -40°C to +85°C. It is housed in a 48-pin QFN package.

Feature Summary

• Integrates an ARM Cortex-M3 processor with Thumb-2 instruction set support for efficient code execution.
• Includes built-in power management features such as an embedded voltage regulator and multiple reset sources.
• Provides flexible connectivity through standard serial communication peripherals like SPI and USART.
• Features an internal oscillator system with failure detection capabilities for reliable clocking.

Applications

• Industrial control systems requiring low-power processing
• Consumer electronics utilizing serial communication protocols
• Embedded sensor interface modules
• General-purpose IoT nodes

Procurement Notes

Verify the specific suffix 'MU' corresponds to the QFN-48 package and industrial temperature grade when sourcing. Confirm RoHS compliance status via the manufacturer's current documentation. Ensure ESD handling procedures are followed due to the moisture sensitivity classification. Cross-reference the full part number against official Microchip databases to avoid counterfeit components.

Selection Notes

Select this component for designs requiring a balance of processing capability and minimal pin count. The 48 MHz speed suits applications not demanding high-frequency real-time performance. Consider the 16 KB Flash limit for complex firmware requirements. The QFN package necessitates careful PCB layout for thermal dissipation and soldering reliability compared to leaded packages.

Part Context

This part belongs to the SAM3N series, which targets cost-sensitive applications. It shares architectural similarities with the SAM7S and SAM3S families but offers reduced peripheral sets and memory sizes. The series emphasizes energy efficiency and small form factors suitable for battery-operated devices.

Replacement Considerations

ATSAM3N00AA-AU: Pin-compatible LQFP alternative.

FAQ

Does the ATSAM3N00AA-MU support external crystal oscillators?

Yes, the device supports quartz or ceramic resonator oscillators ranging from 3 to 20 MHz, in addition to its internal oscillator.

What is the data bus width of the processor core?

The ARM Cortex-M3 core utilizes a 32-bit data bus width.