ATSAM3N1CA-AU

Overview

The ATSAM3N1CA-AU is a 32-bit microcontroller based on the ARM Cortex-M3 core, operating at a maximum frequency of 48MHz. It features 64KB of in-system programmable Flash memory and 8KB of SRAM. The device supports a supply voltage range of 1.62V to 3.6V and includes an internal oscillator. It offers 79 general-purpose I/O pins and integrates peripherals such as DMA, PWM, WDT, and brown-out detection. Connectivity options include I2C, SPI, UART/USART, and IrDA interfaces. Analog capabilities consist of 16-channel 10-bit ADCs and one 10-bit DAC. The component is housed in a 100-LQFP package with dimensions of 14x14mm and operates within a temperature range of -40°C to 85°C.

Feature Summary

• ARM Cortex-M3 processor core for efficient 32-bit execution
• Integrated DMA controller for high-speed data transfer management
• Multiple communication interfaces including SPI, I2C, and USART
• Built-in analog-to-digital and digital-to-analog converters

Applications

• Industrial control systems requiring robust peripheral integration
• Consumer electronics utilizing low-voltage operation
• Embedded applications needing serial communication protocols
• Motor control implementations using PWM outputs

Procurement Notes

Verify the specific ordering suffix and manufacturer documentation to confirm pinout compatibility and electrical characteristics. Ensure that the source provides official datasheets for the ATSAM3N series. Cross-reference the part number with the manufacturer's current status, as availability may vary. Confirm RoHS compliance requirements if applicable to your manufacturing standards. Always validate the package type against your PCB footprint specifications before procurement.

Selection Notes

Select this component when a balance of processing power and peripheral richness is required in a compact form factor. The 48MHz speed suits moderate-performance tasks without excessive power consumption. Consider the 100-pin LQFP package for designs needing extensive I/O connectivity. Evaluate the 1.62V minimum supply voltage for battery-operated or low-power system architectures. Ensure the internal oscillator meets timing accuracy requirements for your application.

Part Context

This microcontroller belongs to the Atmel SAM3N family, designed for cost-sensitive embedded applications. The SAM3N series utilizes the Cortex-M3 architecture to provide high performance at low power. It targets markets such as industrial automation, medical devices, and consumer goods. The family emphasizes ease of use through integrated peripherals and standard interfaces. Development tools and software libraries are typically available from Microchip Technology.

Replacement Considerations

Consult official substitution guides for compatible parts within the SAM3N family. Verify pin-to-pin compatibility and memory size equivalence. Check for differences in package dimensions and thermal characteristics. Ensure that alternative components support the same voltage ranges and operating temperatures.