ATSAM3N4BA-MU

Overview

The ATSAM3N4BA-MU is an ARM microcontroller from the SAM3N series, featuring a 32-bit ARM Cortex-M3 core. It integrates 256 kB of program memory and 24 kB of SRAM data RAM. The device operates at a maximum clock frequency of 48 MHz with a 10-bit ADC resolution. It provides 47 I/O pins and supports SPI and UART interfaces. Power supply ranges from 1.8 V to 1.8 V, and it functions within a temperature range of -40°C to +85°C. The component is housed in a QFN-64 package.

Feature Summary

• Integrates a 32-bit ARM Cortex-M3 processor core for efficient code execution.
• Includes built-in non-volatile program memory and static RAM for data storage.
• Supports serial communication protocols including SPI and UART.
• Features integrated analog-to-digital conversion capabilities.

Applications

• Industrial control systems requiring low power consumption
• Consumer electronics utilizing ARM-based processing
• Embedded applications with limited pin count requirements

Procurement Notes

Verify component authenticity through authorized Microchip Technology distributors or certified suppliers. Confirm that the part number matches exactly, as suffixes indicate specific packaging or environmental ratings. Check for obsolescence status, as this model may be discontinued. Ensure compliance with RoHS directives if required by your region. Request original manufacturer documentation to validate specifications before integration into production designs.

Selection Notes

Select this component when a 48 MHz Cortex-M3 solution with moderate memory capacity is needed. Compare against other SAM3N variants for differences in flash size or I/O count. Consider the QFN-64 package constraints for PCB layout. Verify voltage compatibility with system rails, noting the specific 1.8 V requirement. Evaluate peripheral needs such as ADC channels and timer counts against application demands.

Part Context

This microcontroller belongs to the SAM3N family, designed for cost-sensitive and space-constrained applications. It shares architectural similarities with other SAM3 series devices but offers specific memory and interface configurations. The QFN-64 package facilitates surface-mount assembly. It serves as a bridge between high-performance SAM3S models and lower-end SAM3A options.

Replacement Considerations

Public confirmed substitute part numbers: None identified in verified sources.