ATSAM3S1AA-MUR

Overview

The ATSAM3S1AA-MUR is a 32-bit microcontroller based on the ARM Cortex-M3 core, belonging to the SAM3S series. It features 64 kB of Flash program memory and 16 kB of SRAM data RAM. The device operates with a maximum clock frequency of 64 MHz and supports an input/output count of 34 pins. It includes an 8-channel 12-bit ADC and six timer/counters. The supply voltage range is 1.62 V to 1.9 V for digital logic, with an analog supply of 3.3 V. Interfaces include I2C, SPI, and UART/USART. The component is housed in a QFN-48 package and is rated for industrial temperature operation from -40°C to +85°C.

Feature Summary

• Integrates an ARM Cortex-M3 processor core for efficient 32-bit execution.
• Provides non-volatile Flash memory for program storage and persistent data retention.
• Includes multiple communication peripherals such as SPI, I2C, and UART for system connectivity.
• Features integrated analog-to-digital conversion capabilities for sensor interfacing.

Applications

• Industrial control systems requiring robust processing in harsh environments
• Consumer electronics utilizing low-power ARM-based architectures
• Embedded applications needing serial communication interfaces like UART and SPI

Procurement Notes

Verify the specific suffix 'MUR' indicates the reel packaging format and industrial temperature grade. Confirm that the QFN-48 pinout matches the target PCB footprint design. Ensure the power supply rails align with the specified 1.62 V to 1.9 V digital and 3.3 V analog requirements. Check for any recent Product Change Notifications regarding assembly sites or marking changes.

Selection Notes

Select this component when a balance of moderate Flash capacity and low pin count is required for cost-sensitive embedded designs. The industrial temperature rating makes it suitable for broader environmental conditions than commercial variants. Consider the 64 MHz speed limit against application processing demands. Verify compatibility with existing development tools for the SAM3S family.

Part Context

This part belongs to the Microchip SAM3S family, which utilizes the ARM Cortex-M3 architecture. The SAM3S series is designed for applications requiring high performance and low power consumption. The ATSAM3S1AA variant represents a specific memory configuration within this lineup, offering 64 kB of Flash. The family shares common peripheral sets and software frameworks across different memory sizes.

Replacement Considerations

ATSAM3S1AA-MU is a tray-packaged alternative with identical electrical specifications. ATSAM3S2BA-MUR offers increased Flash memory (128 kB) and more timers but retains similar interface options. ATSAM3S4CA-AUR provides higher memory and additional interfaces in a larger LQFP package.