ATSAM3N1BA-MU

Overview

The ATSAM3N1BA-MU is a 32-bit microcontroller based on the ARM Cortex-M3 core, operating at a maximum frequency of 48 MHz. It features 64 Kbytes of embedded Flash memory and 8 Kbytes of SRAM. The device includes an internal RC oscillator with factory trimming, a PLL for clock generation, and a comprehensive peripheral set comprising multiple USARTs, UARTs, TWIs, SPI interfaces, PWM timers, general-purpose timers, an RTC, a 10-bit ADC, and a 10-bit DAC. It operates within a voltage range of 1.62 V to 3.6 V and supports industrial temperature ranges.

Feature Summary

• Integrates high-performance 32-bit ARM Cortex-M3 processor with Thumb-2 instruction set support.
• Provides flexible connectivity through multiple serial communication interfaces including USART, UART, TWI, and SPI.
• Includes analog peripherals such as a 10-bit ADC and a 10-bit DAC for signal processing applications.
• Supports low-power operation with sleep and backup modes to minimize energy consumption.

Applications

• Industrial automation controllers
• Smart grid monitoring devices
• Medical equipment control systems
• Building and home automation hubs

Procurement Notes

Verify the specific suffix 'MU' indicates the QFN package variant when sourcing. Confirm that the component meets RoHS compliance requirements for your region. Check for any recent Product Change Notifications regarding assembly sites or marking changes. Ensure compatibility with existing development tools and software frameworks provided by Microchip Technology.

Selection Notes

Select this model when a balance of moderate Flash capacity and rich peripheral connectivity is required. It serves as a pin-compatible upgrade path from legacy SAM7S devices. Consider the 64-pin QFN package for space-constrained designs. Evaluate power consumption in backup mode if battery operation is critical for the application.

Part Context

This component belongs to the SAM3N series of ARM Cortex-M3 microcontrollers manufactured by Atmel, now part of Microchip Technology. The series is designed to offer cost-efficiency and enhanced connectivity for various embedded applications. It provides a migration path from older ARM7-based architectures while maintaining software compatibility.

Replacement Considerations

The ATSAM3N1BB-MU is a documented alternative within the same family, offering similar specifications. Verify pinout compatibility before substitution. Other variants in the SAM3N series may differ in memory size or package type.