ATSAM4LC4AA-MUR

Overview

The ATSAM4LC4AA-MUR is a microcontroller from the Microchip SAM4L series, featuring an ARM Cortex-M4 core operating at up to 48 MHz. It integrates 256 KB of embedded Flash memory and 32 KB of SRAM. The device supports a single power supply ranging from 1.68 V to 3.6 V. Key peripherals include a USB 2.0 Device/Host interface, a segment LCD controller, and a 16-channel 12-bit ADC. It utilizes picoPower technology for ultra-low power consumption.

Feature Summary

• Integrates picoPower technology for ultra-low active current consumption with configurable voltage scaling.
• Includes a dedicated segment LCD controller supporting passive displays with integrated buffers.
• Features a hardware capacitive touch module (CATB) for autonomous sensor detection.
• Provides a full-speed USB 2.0 interface with an on-chip transceiver for device and host modes.

Applications

• Battery-powered wearable devices requiring low power operation
• Industrial control systems utilizing segment LCDs
• Consumer electronics with capacitive touch interfaces
• USB-enabled data logging applications

Procurement Notes

Verify the specific suffix 'MUR' against official documentation to confirm package type and reel specifications. Ensure the component meets required environmental standards such as RoHS compliance. Cross-reference the datasheet revision date to confirm feature availability and electrical characteristics match your design requirements.

Selection Notes

Select this model when a balance of moderate memory capacity and rich peripheral sets is needed. The inclusion of AESA and CATB makes it suitable for secure applications with user interaction. Consider the 48-pin QFN package constraints for PCB layout. Evaluate power management needs against the available sleep and backup modes.

Part Context

This part belongs to the SAM4LC sub-series, which distinguishes itself by including an Advanced Encryption System (AES) module and USB Host capabilities. It shares the same core architecture as the SAM4LS but offers enhanced security and connectivity features not present in the LS variant.

Replacement Considerations

ATSAM4LC4AA-AU

FAQ

Does the ATSAM4LC4AA support USB Host mode?

Yes, the ATSAM4LC4AA includes a full-speed USB 2.0 interface that supports both Device and Embedded Host modes.

What is the maximum clock frequency of the core?

The ARM Cortex-M4 processor within the ATSAM4LC4AA operates at frequencies up to 48 MHz.