ATSAM4LS8CA-AU

Overview

The ATSAM4LS8CA-AU is a 32-bit microcontroller based on the ARM Cortex-M4 processor, operating at frequencies up to 48MHz. It features 512KB of embedded Flash memory and 64KB of SRAM within a 100-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. It includes a full-speed USB 2.0 device interface, a 16-channel 12-bit ADC, a 10-bit DAC, and an asynchronous timer with real-time clock capabilities.

Feature Summary

• Integrates picoPower technology enabling ultra-low power operation across multiple sleep modes including wait, retention, and backup states.
• Features a high-performance 32-bit ARM Cortex-M4 core equipped with a Memory Protection Unit and Thumb-2 instruction set.
• Includes a comprehensive peripheral suite such as USB device/host, LCD controller, capacitive touch module, and various serial communication interfaces.
• Supports direct peripheral-to-peripheral communication via the Peripheral Event System and utilizes Peripheral DMA for efficient data transfers.

Applications

• Battery-powered portable devices requiring extended operational life
• Industrial control systems utilizing low-power sensor networks
• Consumer electronics incorporating capacitive touch interfaces
• Audio applications supported by integrated bitstream DAC and I2S controllers

Procurement Notes

Verify the specific ordering suffix against official Microchip documentation to confirm package type and temperature range. Ensure compatibility with required firmware libraries and development tools. Confirm supply chain authenticity through authorized distributors. Check for any recent product change notices affecting assembly or marking details prior to procurement.

Selection Notes

Select this component when a balance of processing performance and energy efficiency is required. The SAM4LS series lacks the AES security module found in the LC variant but offers USB host capabilities. Evaluate pin count and peripheral availability against application requirements. Consider the 100-pin TQFP package for sufficient I/O expansion in compact designs.

Part Context

This part belongs to the SAM4L series of low-power microcontrollers designed for battery-operated applications. It shares the same core architecture and power management features as other members of the family, differing primarily in memory size and specific peripheral configurations like the absence of the segment LCD controller found in the LC sub-series.

Replacement Considerations

ATSAM4LC8CA-AU: Offers similar performance but includes AES encryption and LCD controller while lacking USB host functionality.

FAQ

Does the ATSAM4LS8CA-AU support USB host mode?

Yes, the ATSAM4LS series supports both USB device and embedded host modes, unlike the ATSAM4LC series which is limited to device mode only.

What is the maximum operating frequency of the core?

The ARM Cortex-M4 core in the ATSAM4LS8CA-AU can operate at frequencies up to 48MHz.