ATSAM4LC2CA-AU

Overview

The ATSAM4LC2CA-AU is a 32-bit ARM Cortex-M4 microcontroller from the SAM4L series, operating at frequencies up to 48MHz. It features 128KB of embedded Flash memory and 32KB of SRAM. The device includes a segment LCD controller, USB device and host capabilities, and an Advanced Encryption System (AES) module. It supports multiple communication interfaces including USART, SPI, and TWI, alongside a 16-channel ADC and capacitive touch sensing.

Feature Summary

• Integrates picoPower technology for ultra-low power consumption with configurable voltage scaling.
• Includes a dedicated segment LCD controller supporting passive displays with integrated buffers.
• Features an embedded hardware capacitive touch module for autonomous sensor detection.
• Provides a 128-bit AES cryptographic engine for secure data encryption and decryption.

Applications

• Battery-powered wearable devices requiring low active current
• Smart home appliances with capacitive user interfaces
• Industrial sensors utilizing encrypted communication protocols
• Portable consumer electronics with monochrome display requirements

Procurement Notes

Verify the specific package variant against the datasheet pinout diagrams, as the SAM4LC family utilizes multiple form factors including TQFP, QFN, and WLCSP. Confirm that the selected component matches the required I/O count and peripheral availability for your specific application design before finalizing procurement.

Selection Notes

Select this model when both LCD driving and USB host/device functionality are required, distinguishing it from the LS sub-series which lacks these features. Ensure the design accommodates the single supply voltage range and verify that the available GPIO multiplexing supports the necessary peripheral assignments for the target system architecture.

Part Context

This component belongs to the SAM4L family of low-power microcontrollers based on the ARM Cortex-M4 core. The LC sub-series specifically differentiates itself by integrating both LCD controllers and USB host capabilities, unlike the LS series which focuses on standard serial communication without display or host support.

Replacement Considerations

ATSAM4LC2BA-AU

FAQ

Does the ATSAM4LC2CA-AU support USB host mode?

Yes, the ATSAM4LC sub-series includes a full-speed USB 2.0 interface capable of operating as both a device and an embedded host.

What is the maximum frequency for the internal RC oscillator?

The device features a high-speed internal RC oscillator operating at 80MHz, in addition to other calibrated oscillators for system clock generation.