ATSAM4LC4CA-CFU

Overview

The ATSAM4LC4CA-CFU is a 32-bit microcontroller based on the ARM Cortex-M4 core, operating at frequencies up to 48MHz. It features picoPower technology for ultra-low power consumption and includes state-of-the-art peripherals such as a segment LCD controller, embedded hardware capacitive touch (QTouch), USB device & embedded host, 128-bit AES encryption, and audio interfaces. The device supports high-speed serial communication via USART, SPI, and I2C, along with a Peripheral Event System for direct peripheral-to-peripheral communication.

Feature Summary

• Integrates picoPower technology for ultra-low power consumption with configurable voltage scaling.
• Includes a segment LCD controller supporting up to 40 segments and 4 common terminals.
• Features an embedded hardware capacitive touch module capable of handling buttons, sliders, and wheels.
• Provides a 128-bit Advanced Encryption Standard (AES) module compliant with FIPS Publication 197.

Applications

• Smart energy metering systems
• Industrial control applications
• Consumer devices requiring low-power operation
• Security-enabled embedded systems

Procurement Notes

Verify the specific ordering suffix CFU against official Microchip documentation to confirm package type and temperature range. Ensure compatibility with required interface standards and memory configurations before procurement. Cross-reference datasheet revision history for any recent updates or errata that may impact design implementation.

Selection Notes

Select this component when designing applications that require a balance of high performance and ultra-low power consumption. Consider the integrated LCD controller and capacitive touch capabilities if user interface elements are needed. Evaluate the available GPIO count and peripheral set against system requirements to ensure optimal resource utilization.

Part Context

This microcontroller belongs to the SAM4L series, which is part of Microchip's portfolio of Flash-based MCUs. The series is designed for applications demanding efficient power management alongside robust processing capabilities. It shares architectural similarities with other ARM Cortex-M4 based devices but offers specific optimizations for low-power scenarios.

Replacement Considerations

Consult official Microchip documentation for verified substitute part numbers within the SAM4L family or comparable series. Ensure pin-to-pin compatibility and functional equivalence before considering alternatives.

FAQ

What is the maximum operating frequency of the ATSAM4LC4CA-CFU?

The device operates at frequencies up to 48MHz.

Does the ATSAM4LC4CA-CFU support capacitive touch functionality?

Yes, it includes an embedded hardware capacitive touch module (CATB) supporting up to 32 sensors.

Is there an onboard encryption module in this microcontroller?

Yes, it features a 128-bit Advanced Encryption System (AES) module compliant with FIPS Publication 197.