ATSAM4N8CA-AU

Overview

The ATSAM4N8CA-AU is a 32-bit microcontroller from the Microchip SAM4N series, featuring an ARM Cortex-M4 core. It integrates 512KB of in-system programmable flash memory and 64KB of SRAM. The device operates at a maximum clock frequency of 100MHz and supports a supply voltage range of 1.62V to 1.95V. It includes eight 10-bit ADC channels and provides 34 general-purpose I/O pins. Connectivity options include I2C, SPI, and UART interfaces. The component is housed in a 48-pin LQFP package and is rated for industrial operating temperatures between -40°C and +85°C.

Feature Summary

• Integrates an ARM Cortex-M4 processor with hardware floating-point unit support for efficient signal processing.
• Provides flexible communication capabilities through multiple serial peripheral interfaces including I2C, SPI, and USART.
• Features low-power management modes designed to extend battery life in portable applications.
• Includes on-chip analog-to-digital conversion with multiple selectable resolution options.

Applications

• Portable medical devices requiring precise analog signal acquisition
• Industrial control systems with limited pin count requirements
• Consumer electronics utilizing serial communication protocols
• Battery-powered sensor nodes

Procurement Notes

Verify the specific suffix against official Microchip documentation to confirm package type and temperature grade. Ensure compatibility with existing board layouts regarding the 48-pin LQFP footprint. Confirm that the 1.62V to 1.95V supply voltage range aligns with the target system power design. Check for any recent product change notices affecting marking or assembly locations.

Selection Notes

Select this component when a balance of moderate flash capacity and low pin count is required. The 100MHz performance suits applications needing faster execution than 8-bit controllers but without the complexity of higher-end series. Consider the limited I/O count compared to 100-pin variants. Evaluate power consumption characteristics against strict battery-operated constraints.

Part Context

This part belongs to the SAM4N family, which targets cost-sensitive embedded applications. It shares architectural similarities with other SAM4 series devices but offers reduced peripheral sets and memory sizes. The series emphasizes energy efficiency and compact form factors for space-constrained designs.

Replacement Considerations

Consult Microchip's official cross-reference tools for verified substitutes. Potential alternatives within the same family may include variations with different memory sizes or package options. Ensure functional equivalence before substitution.