ATSAM4LS2BA-AU

Overview

The ATSAM4LS2BA-AU 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 USB 2.0 Device functionality with an on-chip transceiver. Key peripherals include a capacitive touch module (CATB), four TWI interfaces, three USARTs, one SPI, six Timer/Counter channels, a 16-channel 12-bit ADC, and a 10-bit DAC. It operates on a single 1.68V to 3.6V supply and is housed in a 64-lead TQFP package.

Feature Summary

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

Applications

• Battery-powered portable devices requiring low power operation
• Applications utilizing capacitive touch user interfaces
• USB-enabled consumer electronics and peripherals
• Industrial control systems with I2C and UART connectivity

Procurement Notes

Verify that the specific ordering suffix matches the required package type and temperature range. Confirm that the component is sourced from authorized Microchip Technology distributors to ensure authenticity. Check for any relevant Product Change Notices or errata documents associated with this part number before finalizing procurement decisions.

Selection Notes

Select this model when a balance of processing performance and low power consumption is required. It is suitable for designs needing USB device capabilities without host functionality. Consider the 64-pin TQFP package constraints against available PCB space. Ensure the application does not require the LCD controller or AESA found in other SAM4L variants.

Part Context

This component belongs to the SAM4L series, which utilizes picoPower technology to minimize energy usage. The series is designed for applications demanding high efficiency alongside standard microcontroller functionalities. It shares the same core architecture as other SAM4L devices but offers specific memory and peripheral configurations tailored for cost-sensitive and power-constrained environments.

Replacement Considerations

ATSAM4LS2CA-AU: Offers the same specifications in a 100-lead LQFP package.

FAQ

Does the ATSAM4LS2BA-AU support USB Host functionality?

No, the ATSAM4LS2BA-AU supports only USB Device functionality. The USB Host capability is available in the ATSAM4LC sub-series.

What is the maximum operating frequency of this microcontroller?

The device operates at frequencies up to 48MHz.