ATSAM4LS4AA-AUR

Overview

The ATSAM4LS4AA-AUR is a 32-bit microcontroller based on the ARM Cortex-M4 core, operating at frequencies up to 48MHz. It features 256KB of embedded Flash memory and 32KB of SRAM. The device supports a single power supply ranging from 1.68V to 3.6V and includes peripherals such as USB 2.0 Device, multiple USARTs, SPI, TWI, ADC, DAC, and capacitive touch modules.

Feature Summary

• Ultra-low power consumption enabled by picoPower technology with configurable voltage scaling
• Integrated LCD controller for monochrome passive displays
• Hardware cryptographic acceleration via AES module
• Capacitive touch sensing capabilities supporting buttons, sliders, and wheels

Applications

• Battery-powered wearable devices requiring low active current
• Industrial control systems utilizing serial communication interfaces
• Consumer electronics featuring segment LCD displays
• IoT nodes requiring secure data transmission

Procurement Notes

Verify the specific package type and temperature grade against the datasheet before ordering. Confirm that the 'AUR' suffix corresponds to the required tape and reel packaging format. Ensure compatibility with the intended voltage domain and peripheral requirements.

Selection Notes

Select this component when a balance of moderate performance and low power is needed. The SAM4LS series lacks the LCD and AES features found in the SAM4LC series but offers comparable processing speed. Evaluate the available I/O count and peripheral set against application constraints.

Part Context

This part belongs to the Microchip SAM4L family, designed for low-power applications. It utilizes the ARM Cortex-M4 processor with DSP instructions. The family emphasizes energy efficiency through various sleep modes and hardware accelerators for common tasks like encryption and audio processing.

Replacement Considerations

ATSAM4LS4CA-AU: Different package (TQFP vs LQFP). ATSAM4LC4BA-AU: Includes LCD and AES features not present in the LS variant.