ATSAM3N2CA-CU

Overview

The ATSAM3N2CA-CU is an ARM Cortex-M3 microcontroller from the SAM3N series, manufactured by Microchip Technology. It features a 128 kB Flash program memory and operates at a maximum clock frequency of 48 MHz. The device utilizes a 32-bit data bus width and provides 79 I/O lines. It supports SPI and UART interfaces and functions within a supply voltage range of 1.62 V to 1.95 V. The component is housed in a BGA-100 package and is rated for industrial temperatures between -40°C and +85°C.

Feature Summary

• Integrates an ARM Cortex-M3 processor core with Thumb-2 instruction set support
• Includes embedded Flash memory and SRAM for code execution and data storage
• Supports multiple communication protocols including SPI and UART
• Features low-power modes and internal voltage regulation

Applications

• Industrial control systems requiring 32-bit processing
• Consumer electronics utilizing capacitive touch interfaces
• General-purpose embedded applications migrating from 8/16-bit architectures

Procurement Notes

Verify component authenticity through authorized channels as this part may be end-of-life. Confirm RoHS compliance status and check for available replacement alternatives due to potential discontinuation. Ensure packaging specifications match design requirements before procurement.

Selection Notes

Select this model when 128 kB Flash and 79 I/O pins are required in a compact BGA package. Consider the 48 MHz speed limit and 1.62V to 1.95V operating voltage range against system power constraints. Verify compatibility with existing firmware libraries for the SAM3N family.

Part Context

This MCU belongs to the SAM3N family, designed for cost-sensitive applications transitioning from 8 or 16-bit controllers. The series offers pin compatibility with the SAM3S family to reduce bill of materials costs. It targets general-purpose uses where moderate performance and low power consumption are prioritized over high-speed data throughput.

Replacement Considerations

Public confirmed substitute part numbers: ATSAM3N2BA-AU (LQFP package variant), ATSAM3N4CA-CU (256 kB Flash variant).