ATSAM3N4CA-AU

Overview

The ATSAM3N4CA-AU is a 32-bit microcontroller based on the ARM Cortex-M3 core, operating at a maximum frequency of 48MHz. It features 256KB of in-system programmable flash memory and 24KB of SRAM. The device supports a supply voltage range of 1.62V to 3.6V and includes an internal oscillator. Connectivity options include I2C, IrDA, SPI, and UART/USART interfaces. It provides 34 general-purpose I/O lines and integrates peripherals such as DMA, PWM, WDT, and brown-out detection/reset circuits.

Feature Summary

• Integrates an ARM Cortex-M3 processor with up to 48MHz execution speed for efficient code processing.
• Includes 256KB of non-volatile flash memory for program storage and data retention.
• Supports multiple communication protocols including I2C, SPI, and USART for system connectivity.
• Features integrated analog-to-digital converters and pulse-width modulation capabilities.

Applications

• Industrial control systems requiring low-power 32-bit processing
• Consumer electronics utilizing serial communication interfaces
• Embedded sensor nodes with ADC requirements

Procurement Notes

Verify component authenticity through authorized Microchip Technology distributors or certified suppliers. Confirm the specific package marking and date codes against official documentation. Ensure compliance with RoHS directives if required by your manufacturing standards. Check for any product change notices affecting assembly sites or materials before finalizing procurement orders.

Selection Notes

Select this component when a balance of moderate flash capacity and low pin count is required for cost-sensitive applications. Compare RAM sizes and peripheral sets against alternative SAM3N variants to ensure sufficient resources for the target firmware. Verify that the 48MHz clock speed meets the real-time processing demands of the application logic.

Part Context

This part belongs to the SAM3N series of 32-bit Flash MCUs based on the ARM Cortex-M3 core. The series is designed for applications where code size, power consumption, and performance are critical considerations. It shares architectural similarities with other SAM3 family members but offers specific memory and I/O configurations tailored for compact embedded designs.

Replacement Considerations

Consult the official SAM3N datasheet for cross-reference information. Potential substitutes within the same family may include ATSAM3N4AA-AU or ATSAM3N4BA-AU, depending on package availability and specific pinout requirements. Verify electrical characteristics and software compatibility before substitution.