ATSAM3N00BA-MU

Overview

The ATSAM3N00BA-MU is a 32-bit ARM Cortex-M3 microcontroller from the SAM3N series, manufactured by Microchip Technology (formerly Atmel). It features 16 kB of Flash program memory and 4 kB of SRAM. The device operates at a maximum clock frequency of 48 MHz and supports a supply voltage range of 1.62 V to 1.95 V. It includes a 10-bit ADC with 10 channels and provides 47 general-purpose I/O pins. Connectivity interfaces include SPI, UART, and I2C. The component is housed in a 64-pin LQFP package and is rated for an industrial operating temperature range of -40°C to +85°C.

Feature Summary

• Integrates an ARM Cortex-M3 processor core with Thumb-2 instruction set support for efficient code execution.
• Provides embedded Flash memory for non-volatile code storage and SRAM for data handling.
• Includes multiple communication peripherals such as USART, UART, TWI, and SPI for system connectivity.
• Features a 10-bit analog-to-digital converter with multiple input channels for sensor interfacing.

Applications

• Industrial automation control systems
• Smart grid metering devices
• Building and home automation controllers
• Test and measurement equipment

Procurement Notes

Verify the specific suffix 'MU' against the manufacturer's official datasheet to confirm the package type and temperature grade. Confirm RoHS compliance status through current documentation. Check for obsolescence notices or lifecycle status updates directly from Microchip Technology distributors. Ensure pinout compatibility with existing PCB layouts before procurement.

Selection Notes

Select this component when a low-cost 32-bit MCU with moderate memory requirements is needed. It serves as a migration path from 8-bit or 16-bit architectures. Compare memory sizes and peripheral sets against other SAM3N variants like ATSAM3N1BB or ATSAM3N2BA if higher capacity is required. Verify voltage regulator specifications for power management design.

Part Context

The ATSAM3N00BA-MU belongs to the SAM3N family of microcontrollers designed for cost-sensitive applications. This series bridges the gap between 8/16-bit MCUs and higher-performance 32-bit solutions. It shares architectural similarities with the SAM3S series but offers different memory configurations. The family supports QTouch library integration for capacitive touch sensing applications.

Replacement Considerations

Consult Microchip's official cross-reference tools for verified substitutes. Potential alternatives within the same family include ATSAM3N1BB-MU or ATSAM3N2BA-AU, depending on memory needs. Ensure any replacement maintains pin compatibility and peripheral functionality.