ATSAM3N1BA-AU

Overview

The ATSAM3N1BA-AU is a 32-bit microcontroller based on the ARM Cortex-M3 core, operating at up to 48 MHz. It features 64KB of embedded Flash memory and 8KB of SRAM. The device includes an internal RC oscillator with factory trimming, a PLL for clock generation, and multiple peripherals such as USARTs, UARTs, TWIs, SPIs, PWM, timers, RTC, ADC, and DAC. It supports low-power modes including Sleep and Backup, with power supply ranging from 1.62V to 3.6V.

Feature Summary

• Integrates ARM Cortex-M3 processor with Thumb-2 instruction set and nested vector interrupt controller
• Includes embedded voltage regulator for single-supply operation and comprehensive power management features
• Offers multiple communication interfaces including USART, UART, TWI, and SPI alongside analog converters
• Supports ultra-low power consumption with dedicated backup mode and real-time clock functionality

Applications

• Industrial control systems requiring robust peripheral integration
• Consumer electronics utilizing low-power operational modes
• Embedded applications needing precise timing via RTC and PWM capabilities
• Data acquisition systems leveraging integrated ADC and DAC components

Procurement Notes

Verify component authenticity through authorized distributors or manufacturer channels. Confirm package integrity and pin alignment prior to installation. Ensure compatibility with existing design specifications regarding voltage levels and interface requirements. Review datasheet revisions for any updates in electrical characteristics or recommended operating conditions before finalizing procurement decisions.

Selection Notes

Select this model when a balance of processing performance and peripheral richness is required within a compact footprint. Consider its pin-to-pin compatibility with legacy SAM7S and SAM3S series if upgrading existing designs. Evaluate power consumption profiles against application demands, particularly noting the availability of low-power modes. Verify that the available I/O count and memory sizes meet specific project constraints without unnecessary overhead.

Part Context

This part belongs to the Atmel SAM3N series, designed for cost-sensitive applications demanding high performance. It converges the efficiency of the ARM Cortex-M3 architecture with extensive onboard resources. The series targets markets where space constraints and power efficiency are critical, offering a scalable solution across various memory configurations while maintaining consistent peripheral sets.

Replacement Considerations

Direct substitutes include other variants within the SAM3N family such as ATSAM3N0CA-AU or ATSAM3N1CA-AU, provided memory differences are acceptable. Cross-series replacements like SAM3S models may require schematic adjustments due to pinout variations. Always verify electrical parameters and firmware compatibility before implementing any alternative component.