ATSAM4LS2CA-AUR

Overview

The ATSAM4LS2CA-AUR is a 32-bit microcontroller based on the ARM Cortex-M4 processor, operating at frequencies up to 48MHz. It features 128KB of embedded Flash memory and 32KB of SRAM. The device supports a single power supply ranging from 1.68V to 3.6V and includes a full-speed USB 2.0 device interface with an on-chip transceiver. Key peripherals include a 16-channel 12-bit ADC, a 10-bit DAC, four TWI interfaces, one SPI, four USARTs, and a capacitive touch module. It operates within a temperature range of -40°C to +85°C.

Feature Summary

• Integrates picoPower technology for ultra-low power consumption with configurable voltage scaling.
• Includes a Liquid Crystal Display (LCD) controller supporting passive displays with integrated buffers.
• Features an embedded hardware capacitive touch module for autonomous detection of buttons and sliders.
• Supports direct peripheral-to-peripheral communication via the Peripheral Event System.

Applications

• Battery-powered wearable devices requiring low active current consumption
• Industrial control systems utilizing I2C and SPI communication protocols
• Consumer electronics with LCD display interfaces
• USB-enabled data logging or host applications

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm package type, temperature grade, and tape-and-reel specifications. Ensure compatibility with required development tools and debuggers. Confirm RoHS compliance status for the specific batch prior to integration into final assemblies.

Selection Notes

Select this component when a balance of moderate Flash capacity and low-power operation is required. The SAM4LS series lacks the AESA found in the LC sub-series but offers USB device capabilities. Evaluate pin count requirements against the 100-lead LQFP package availability for sufficient GPIO expansion.

Part Context

This part belongs to the Microchip SAM4L series, designed for low-power applications using the ARM Cortex-M4 core. It distinguishes itself from the SAM4LC series by omitting the Advanced Encryption Standard module while retaining USB device functionality. The series emphasizes energy efficiency through picoPower technology and integrated analog peripherals.

Replacement Considerations

ATSAM4LS2BA-AUR: Similar 128KB Flash configuration but in a 64-TQFP package with fewer I/O lines. ATSAMS70N20A-CN: Higher performance Cortex-M7 core with significantly more memory and speed, suitable for complex processing tasks.