ATSAM4LC2BA-AU

Overview

The ATSAM4LC2BA-AU is a 32-bit microcontroller based on the ARM Cortex-M4 processor, operating at frequencies up to 48MHz. It features 128KB of embedded Flash memory and 32KB of SRAM within a 64-lead TQFP package. The device incorporates picoPower technology for ultra-low power consumption, supporting active current down to 90 μA/MHz with configurable voltage scaling. Key peripherals include a segment LCD controller, USB 2.0 device and embedded host interface, capacitive touch module (CATB), and advanced encryption standard (AES) hardware.

Feature Summary

• Integrates picoPower technology enabling ultra-low power operation with fast wake-up capabilities from sleep modes.
• Includes an embedded segment LCD controller designed for monochrome passive displays with integrated buffers.
• Features a dedicated capacitive touch module supporting autonomous detection for buttons, sliders, and wheels.
• Provides hardware-accelerated security through a 128-bit Advanced Encryption Standard (AES) module.

Applications

• Battery-powered wearable devices requiring low power consumption
• Industrial control systems utilizing segment LCD interfaces
• Consumer electronics incorporating capacitive touch controls
• Secure communication endpoints requiring hardware encryption

Procurement Notes

Verify the specific ordering suffix against official Microchip documentation to confirm package type and temperature range. Ensure compatibility with existing PCB footprints for the 64-TQFP configuration. Confirm that the selected variant meets all functional requirements for the target application before finalizing procurement.

Selection Notes

Select this component when a balance of processing performance and low power consumption is required. The inclusion of both USB host/device capabilities and LCD controllers makes it suitable for complex user interfaces. Evaluate memory constraints against the 128KB Flash and 32KB SRAM limits to ensure adequate space for firmware and data storage.

Part Context

This part belongs to the SAM4L series of microcontrollers, which are optimized for low-power applications. The series differentiates between LC and LS sub-series based on peripheral availability, such as LCD controllers and AES modules. The ATSAM4LC2BA-AU specifically targets applications needing secure, interactive interfaces with minimal energy usage.

Replacement Considerations

Consult official substitution lists for equivalent parts within the SAM4L family. Verify pinout compatibility and peripheral feature parity when considering alternative packages or variants. Ensure that any replacement maintains the required cryptographic and display functionalities.