ATSAM3N4BA-AU

Overview

The ATSAM3N4BA-AU is a 32-bit microcontroller from the SAM3N series, featuring an ARM Cortex-M3 core operating at up to 48 MHz. It integrates 256 KB of Flash memory and 32 KB of SRAM within a 64-LQFP package. The device supports a supply voltage range of 1.62 V to 3.6 V and operates between -40°C and +85°C. Connectivity includes I2C, SPI, UART/USART, and IrDA interfaces, alongside peripherals such as DMA, PWM, and multiple timers.

Feature Summary

• Integrates ARM Cortex-M3 processor with hardware floating-point unit support for efficient digital signal processing.
• Provides flexible connectivity through multiple serial communication interfaces including SPI, UART, and I2C.
• Includes comprehensive peripheral set with DMA controller, watchdog timer, and power management features.

Applications

• Industrial control systems requiring robust communication protocols
• Consumer electronics utilizing low-power embedded processing
• Smart metering applications with secure data handling

Procurement Notes

Verify component authenticity through authorized Microchip distributors or certified partners. Confirm lot traceability and RoHS compliance status prior to integration. Ensure storage conditions adhere to moisture sensitivity level requirements specified in the datasheet to prevent package damage during reflow soldering processes.

Selection Notes

Select this model when a balance of moderate code capacity and industrial temperature range is required. Compare against SAM3S series if higher clock speeds are needed, or SAM3N00B if reduced pin count suffices. Evaluate peripheral availability against specific interface needs before finalizing the design choice.

Part Context

This component belongs to the SAM3N family, designed for cost-sensitive applications requiring reliable performance. It shares architectural similarities with other SAM3 variants but offers distinct memory configurations. The part is widely used in embedded systems where deterministic execution and standard peripheral sets are critical for system stability.

Replacement Considerations

ATSAM3N0AA-AU: Offers lower memory capacity (32KB Flash) and fewer pins (LQFP-48). ATSAM3N00BA-AU: Features significantly less memory (16KB Flash) but maintains similar pinout compatibility. Verify software compatibility and peripheral mapping differences when substituting these variants.