ATSAM4LS4CA-AUR

Overview

The ATSAM4LS4CA-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 64KB of SRAM. The device supports a single power supply ranging from 1.68V to 3.6V. Key peripherals include USB 2.0 Device and Embedded Host capabilities, a 16-channel 12-bit ADC, a 10-bit DAC, and multiple communication interfaces such as USART, SPI, and TWI. It incorporates picoPower technology for ultra-low power consumption.

Feature Summary

• Integrates picoPower technology for ultra-low active current consumption with configurable voltage scaling.
• Includes a full-speed USB 2.0 interface supporting both device and embedded host modes.
• Features a capacitive touch module (CATB) capable of handling up to 32 sensors for buttons, sliders, and wheels.
• Supports direct peripheral-to-peripheral communication via the Peripheral Event System without CPU intervention.

Applications

• Battery-powered portable devices requiring low power consumption
• Applications utilizing capacitive touch user interfaces
• USB-enabled consumer electronics and data logging tools
• Audio processing systems using bitstream DAC or I2S controllers

Procurement Notes

Verify the specific package type and suffix against official Microchip documentation to ensure compatibility with your design requirements. Confirm that the ordering suffix corresponds to the correct tape and reel configuration if automated assembly is planned. Cross-reference the datasheet revision to ensure all errata and updates are accounted for during implementation.

Selection Notes

Select this component when a balance of moderate performance and low power is required. The SAM4LS series lacks the LCD controller and AESA found in the SAM4LC series but offers USB host functionality. Ensure the application does not require segment LCD driving or hardware encryption, as these are not present in the LS sub-series.

Part Context

This part belongs to the SAM4L family of microcontrollers designed for low-power applications. Unlike the SAM4C series which targets high-performance smart energy applications with dual cores, the SAM4L focuses on efficiency. The ATSAM4LS4CA variant specifically provides 256KB of Flash and is optimized for cost-sensitive designs needing USB connectivity and touch sensing capabilities.

Replacement Considerations

ATSAM4LS4CA-AU