ATSAM4LC4CA-AU

Overview

The ATSAM4LC4CA-AU is a 32-bit microcontroller based on the ARM Cortex-M4 core, operating at frequencies up to 48MHz. It features 256KB of embedded Flash memory and 32KB of SRAM. The device supports a single power supply ranging from 1.68V to 3.6V and includes a 128-bit AES hardware accelerator. Connectivity options include USB 2.0 Device and Embedded Host, multiple USARTs, SPI, and TWI interfaces. It also integrates a segment LCD controller, capacitive touch module, and various analog peripherals such as a 12-bit ADC and 10-bit DAC.

Feature Summary

• Integrates picoPower technology for ultra-low power consumption with configurable voltage scaling.
• Includes a 128-bit Advanced Encryption System (AES) module for secure data processing.
• Features a dedicated segment LCD controller supporting passive displays with up to 40 segments.
• Supports direct peripheral-to-peripheral communication via the Peripheral Event System.

Applications

• Low-power wearable devices requiring secure data handling
• Battery-operated consumer electronics with display interfaces
• Industrial control systems utilizing capacitive touch inputs
• Audio-enabled IoT nodes using I2S or Audio Bitstream DAC

Procurement Notes

Verify the specific ordering suffix against official Microchip documentation to confirm package type and temperature range. Ensure compatibility with required development tools and software frameworks before procurement. Confirm that the component meets all necessary regulatory standards for the intended deployment environment.

Selection Notes

Select this model when application requirements include integrated cryptographic acceleration alongside low-power operation. Consider the availability of the segment LCD controller and capacitive touch capabilities if user interface elements are needed without external components. Evaluate the 48MHz performance limit against processing demands.

Part Context

This component belongs to the SAM4L series of microcontrollers designed for low-power applications. The series utilizes the ARM Cortex-M4 processor and incorporates picoPower technology to minimize energy usage across various operational modes. It targets markets demanding efficient processing with rich peripheral sets in compact packages.

Replacement Considerations

Consult official substitution lists for verified alternatives within the SAM4L family. Ensure any replacement maintains compatible pinouts, memory sizes, and peripheral configurations to avoid redesign efforts.