ATSAM4LC4BA-AUR

Overview

The ATSAM4LC4BA-AUR is a 32-bit microcontroller from the SAM4L series, featuring an ARM Cortex-M4 core operating at up to 48MHz. It integrates 256KB of embedded Flash memory and 32KB of SRAM within a 64-lead TQFP package. The device supports a single power supply ranging from 1.68V to 3.6V and includes USB 2.0 Device and Embedded Host capabilities with an on-chip transceiver. Key peripherals include a segment LCD controller, capacitive touch module, and advanced encryption standard hardware.

Feature Summary

• Integrates picoPower technology for ultra-low power consumption across various sleep modes.
• Includes USB 2.0 Device and Embedded Host interface with on-chip transceiver.
• Features a segment LCD controller and capacitive touch module for user interfaces.
• Provides hardware security through an Advanced Encryption Standard (AES) module.

Applications

• Battery-powered portable devices requiring low active current
• Applications utilizing segment LCD displays
• Systems requiring capacitive touch input controls
• Devices needing secure data transmission via AES

Procurement Notes

Verify the specific ordering suffix against official Microchip documentation to confirm package type and temperature range. Ensure compatibility with existing board layouts for the 64-TQFP form factor. Confirm that the AUR suffix corresponds to the required reel packaging specification for automated assembly processes.

Selection Notes

Select this component when a balance of moderate Flash capacity and extensive peripheral connectivity is required. The inclusion of both USB host and device functions simplifies design for communication-heavy applications. Consider the available GPIO count and LCD support if display integration is necessary for the target product.

Part Context

This part belongs to the ATSAM4LC sub-series, which distinguishes itself by including an AES module and USB Host capability not found in all SAM4L variants. It shares the same core architecture as other SAM4L devices but offers specific peripheral combinations tailored for secure, interactive applications.

Replacement Considerations

Direct substitutes within the same family include ATSAM4LC4AA-MU or ATSAM4LC4CA-AU, provided pinout and peripheral requirements match. Verify that alternative packages maintain the necessary I/O count and that any differences in ADC channel availability do not impact system functionality.