ATSAM3S1AB-AU

Overview

The ATSAM3S1AB-AU is an ARM Cortex-M3 microcontroller from the SAM3S series, manufactured by Microchip Technology. It features a 64 kB Flash program memory and 16 kB SRAM data RAM. The device operates at a maximum clock frequency of 64 MHz with a 32-bit data bus width. It includes one USB channel, three SPI channels, two USART channels, and one I2C channel. The unit supports pulse width modulation via four 16-bit units. Operating voltage ranges from 1.62 V to 3.6 V, with an operating temperature range of -40°C to +85°C. It is housed in a 48-pin LQFP package.

Feature Summary

• Integrates ARM Cortex-M3 core for efficient 32-bit processing
• Includes built-in USB interface for connectivity
• Provides multiple communication peripherals including SPI and USART

Applications

• USB-enabled embedded control systems
• Industrial automation controllers
• Consumer electronics devices

Procurement Notes

Verify component authenticity through authorized Microchip distributors or certified suppliers. Confirm RoHS compliance status prior to integration. Check current lifecycle status as availability may vary. Ensure storage conditions meet humidity sensitivity requirements. Validate pinout compatibility with existing PCB layouts before procurement.

Selection Notes

Select this model when a 64 MHz Cortex-M3 MCU with integrated USB is required. Compare memory sizes against application needs; consider higher capacity variants if more than 64 kB Flash is necessary. Verify that the 48-pin LQFP package fits the design constraints. Ensure power supply rails match the 1.62 V to 3.6 V operational range.

Part Context

This component belongs to the Microchip SAM3S family of ARM-based microcontrollers. These devices are designed for cost-sensitive applications requiring moderate performance and peripheral integration. The SAM3S series utilizes the Cortex-M3 architecture to deliver high efficiency within a compact form factor suitable for various embedded environments.

Replacement Considerations

Consult official Microchip documentation for verified cross-references. No direct substitutes are confirmed in available public records.