ATSAM4LC8AA-MU

Overview

The ATSAM4LC8AA-MU is a microcontroller from the SAM4L series, featuring an ARM Cortex-M4 core operating at up to 48MHz. It integrates 512KB of Flash memory and 64KB of SRAM within a 64-pin QFN package. The device supports a single power supply ranging from 1.68V to 3.6V. Key peripherals include a segment LCD controller, USB device and embedded host capabilities, and hardware cryptographic acceleration via AESA.

Feature Summary

• Integrates picoPower technology for ultra-low active current consumption and multiple low-power sleep modes with fast wake-up times.
• Includes a dedicated segment LCD controller supporting passive displays with integrated buffers and waveform generation.
• Features hardware capacitive touch sensing (CATB) for autonomous detection of buttons, sliders, and wheels.
• Provides embedded USB 2.0 full-speed device and host interfaces with on-chip transceiver.

Applications

• Battery-powered wearable devices requiring extended operational life
• Industrial control systems utilizing segment LCD displays
• Consumer electronics incorporating capacitive touch user interfaces
• Secure data transmission applications leveraging 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-lead QFN configuration. Confirm that the selected variant meets all regulatory compliance requirements for the target deployment environment.

Selection Notes

Select this component when application requirements demand high performance combined with strict power constraints. The inclusion of both USB host/device functionality and LCD control reduces external component count. Evaluate peripheral availability against project needs, as pin multiplexing may limit simultaneous interface usage.

Part Context

This part belongs to the SAM4L family, designed for low-power applications using ARM Cortex-M4 architecture. The 'C' designation indicates support for segment LCDs and hardware AES encryption, distinguishing it from the 'LS' sub-series which lacks these features. The '8' denotes the highest memory capacity within the sub-series.

Replacement Considerations

ATSAM4LC8BA-MU: Identical specifications with different packaging or suffix variations; verify pinout compatibility.

FAQ

Does the ATSAM4LC8AA-MU support USB host mode?

Yes, the device includes a USB 2.0 interface capable of operating as both a device and an embedded host.

What is the maximum clock frequency of the core?

The ARM Cortex-M4 processor runs at frequencies up to 48MHz.