ATSAM4LC4AA-AU

Overview

The ATSAM4LC4AA-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. Key peripherals include a segment LCD controller, USB device and embedded host interface, capacitive touch module, and various communication interfaces such as USART, SPI, and I2C.

Feature Summary

• Integrates picoPower technology for ultra-low power consumption with configurable voltage scaling.
• Includes a segment LCD controller supporting passive displays with integrated buffers and waveform control.
• Features an embedded hardware capacitive touch module for autonomous sensing of buttons and sliders.
• Provides direct peripheral-to-peripheral communication via the Peripheral Event System.

Applications

• Battery-powered portable devices requiring extended operational life
• Applications utilizing monochrome passive liquid crystal displays
• Systems incorporating capacitive touch user interfaces
• Embedded host or device implementations using USB connectivity

Procurement Notes

Verify the specific package variant against the datasheet pinout diagrams to ensure compatibility with the target PCB footprint. Confirm that the selected component matches the required memory configuration and peripheral set defined in the official Microchip documentation before finalizing procurement orders.

Selection Notes

Select this component when a balance of processing performance and low power consumption is required. Ensure the application utilizes the specific peripheral mix available in the LC sub-series, particularly the AESA and USB Host capabilities which distinguish it from other series variants.

Part Context

This part belongs to the SAM4L family of microcontrollers designed for low-power applications. The LC sub-series specifically includes advanced security and display features not found in all family members. It represents a transition point in Microchip's portfolio following the acquisition of Atmel, maintaining legacy naming conventions while integrating modern ARM Cortex-M4 architecture.

Replacement Considerations

ATSAM4LC4BA-AU