ATSAM3N0BA-MU

Overview

The ATSAM3N0BA-MU is an ARM Cortex-M3 microcontroller from the SAM3N series, manufactured by Microchip Technology. It features a 32-bit data bus and operates at a maximum clock frequency of 48 MHz. The device integrates 32 kB of Flash program memory and 8 kB of SRAM data RAM. It includes an internal oscillator and supports multiple communication interfaces including I2C, IrDA, SPI, and UART/USART. The component is housed in a 64-LQFP package with 47 available I/O lines. It functions within a supply voltage range of 1.62 V to 3.6 V and supports an operating temperature range from -40°C to +85°C.

Feature Summary

• Integrates ARM Cortex-M3 core for efficient 32-bit processing
• Includes built-in DMA controller and power management peripherals
• Supports diverse serial communication protocols via integrated controllers
• Features internal oscillator for simplified system clocking

Applications

• Industrial control systems requiring low-power operation
• Consumer electronics utilizing serial communication interfaces
• Embedded applications needing compact surface-mount packaging

Procurement Notes

Verify the specific suffix against official Microchip documentation to confirm package type and temperature grade. Confirm current production status as availability may vary. Ensure compatibility with required voltage levels and interface standards before integration into final designs.

Selection Notes

Select this model when a balance of moderate memory capacity and low pin count is required. Consider the QFN-64 package for space-constrained PCB layouts. Evaluate the 48 MHz performance limit against application timing requirements. Verify that the 3.6 V maximum supply voltage aligns with the target system power architecture.

Part Context

This component belongs to the SAM3N family of low-power ARM Cortex-M3 microcontrollers. The series is designed for cost-sensitive applications requiring efficient code execution and minimal peripheral overhead. The ATSAM3N0BA variant specifically targets use cases where 32 kB of Flash and 8 kB of RAM are sufficient for firmware storage and runtime data handling.

Replacement Considerations

Consult Microchip datasheets for direct pin-compatible alternatives within the SAM3N series. Verify memory size and package dimensions match existing board constraints. Check for any changes in peripheral availability or electrical characteristics between potential substitute part numbers.