ATSAM4LS4AA-MUR

Overview

The ATSAM4LS4AA-MUR is a microcontroller from the SAM4L series, featuring an ARM Cortex-M4 core operating at up to 48MHz. It includes 256KB of embedded Flash memory and 32KB of SRAM. The device supports USB 2.0 Device functionality with up to 8 bidirectional endpoints. Key peripherals include a 16-channel 12-bit ADC, a 10-bit DAC, four TWI interfaces, three USARTs, and one SPI interface. It operates on a single 1.68V to 3.6V supply and utilizes picoPower technology for low power consumption.

Feature Summary

• Integrates picoPower technology for ultra-low active current consumption and multiple low-power sleep modes.
• Includes a full-speed USB 2.0 device controller with an on-chip transceiver.
• Features a capacitive touch module supporting up to 32 sensors for button and slider applications.
• Provides direct peripheral-to-peripheral communication via the Peripheral Event System.

Applications

• Battery-powered portable devices requiring extended operational life
• Consumer electronics utilizing capacitive touch interfaces
• USB-enabled data logging or communication modules
• Industrial control systems with low power requirements

Procurement Notes

Verify the specific package type and suffix against official Microchip documentation to ensure compatibility with your design. Confirm that the ordering suffix matches the required tape and reel configuration if applicable. Cross-reference the datasheet revision to ensure all electrical characteristics align with your system constraints before finalizing procurement.

Selection Notes

Select this component when a balance of processing performance and low power consumption is required. The SAM4L series is suitable for applications needing USB connectivity without the complexity of host capabilities found in other series. Ensure the available GPIO count and peripheral set meet the specific interface requirements of the target application.

Part Context

This part belongs to the SAM4L family, which is designed for low-power applications using the ARM Cortex-M4 architecture. Unlike the SAM4LC variant, the SAM4LS series does not include segment LCD controllers or AES hardware acceleration but retains USB device capabilities. It is positioned as a cost-effective solution for general-purpose low-power microcontroller needs.

Replacement Considerations

Check for pin-compatible alternatives within the SAM4L family, such as the ATSAM4LS2AA-MUR or ATSAM4LS8AA-MUR, depending on memory requirements. Verify that any substitute maintains the same package footprint and voltage specifications.

FAQ

Does the ATSAM4LS4AA-MUR support USB Host functionality?

No, the SAM4LS series only supports USB Device functionality. The SAM4LC series is required for combined Device and Embedded Host capabilities.

What is the maximum operating frequency of the core?

The ARM Cortex-M4 core in the ATSAM4LS4AA-MUR can operate at frequencies up to 48MHz.