ATSAM3N1CB-AU

Overview

The ATSAM3N1CB-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 is housed in a 100-LQFP package with 79 available I/O lines. It supports a supply voltage range of 1.62V to 3.6V and operates within a temperature range of -40°C to 85°C. Peripheral interfaces include I2C, SPI, UART/USART, and IrDA. Analog capabilities consist of sixteen 10-bit ADC channels and one 10-bit DAC.

Feature Summary

• Integrates an ARM Cortex-M3 processor for efficient 32-bit code execution
• Includes direct memory access controller for high-speed data transfer
• Provides multiple communication interfaces including SPI, I2C, and USART
• Features integrated analog-to-digital and digital-to-analog converters

Applications

• Industrial control systems requiring robust peripheral connectivity
• Consumer electronics utilizing low-voltage power supplies
• Medical devices needing precise analog signal acquisition
• Smart metering applications with limited pin count requirements

Procurement Notes

Verify the specific suffix 'AU' confirms the lead-free RoHS compliant packaging and industrial temperature grade. Confirm the manufacturer source is Microchip Technology or authorized distributors. Check datasheet revisions for any pinout or electrical characteristic updates prior to finalizing procurement specifications.

Selection Notes

Select this component when a balance of moderate program storage and extensive I/O count is required in a single package. Compare against smaller SAM3N variants if fewer pins suffice. Ensure the 48MHz clock speed meets processing demands. Verify that the 1.62V minimum voltage aligns with the system power architecture.

Part Context

This part belongs to the SAM3N series of 32-bit Flash microcontrollers designed for cost-sensitive embedded applications. It shares the Cortex-M3 core architecture with other members but offers distinct memory and I/O configurations. The series targets applications requiring reliable performance without the complexity of higher-end cores.

FAQ

Does the ATSAM3N1CB-AU support external crystal oscillators?

Yes, the device includes an internal oscillator but also supports external clock sources via its dedicated input pins for precise timing requirements.

What is the maximum number of general-purpose I/O ports available?

The ATSAM3N1CB-AU provides 79 usable general-purpose I/O ports across its 100-pin LQFP package.