ATSAM3S1BB-AU

Overview

The ATSAM3S1BB-AU is an ARM microcontroller within the SAM3S series, featuring a 32-bit ARM Cortex-M3 core operating at a maximum clock frequency of 64 MHz. It integrates 64 kB of Flash program memory and 16 kB of SRAM data memory. The device provides 79 general-purpose I/O pins and supports multiple communication interfaces including SPI, UART, and I2C. It operates on a supply voltage range of 1.62 V to 3.6 V and functions within an industrial temperature range of -40°C to +85°C.

Feature Summary

• Integrates a high-performance 32-bit ARM Cortex-M3 processor with hardware multiply and divide instructions.
• Includes embedded non-volatile Flash memory for code storage and static RAM for data handling.
• Supports versatile peripheral connectivity through standard serial interfaces such as SPI and USART.
• Features built-in power management capabilities including brown-out detection and reset circuits.

Applications

• Industrial control systems requiring robust MCU performance
• Consumer electronics utilizing low-power ARM architectures
• Embedded applications needing USB or serial communication interfaces

Procurement Notes

Verify the specific suffix 'AU' against the manufacturer's official datasheet to confirm package type and temperature grade. Confirm component availability status as product lifecycles may change. Ensure compatibility with existing PCB footprints and voltage levels before procurement.

Selection Notes

Select this model when a balance of moderate memory capacity and cost-effectiveness is required for Cortex-M3 applications. Compare pin counts and peripheral sets against alternatives like the ATSAM3S2BA if higher I/O density is needed. Verify that the 64 MHz speed meets real-time processing requirements.

Part Context

This component belongs to the Microchip SAM3S family of Flash-based microcontrollers. These devices are designed for general-purpose embedded applications, offering a scalable architecture based on the ARM Cortex-M3 core. The family typically includes variants with varying memory sizes and package options to suit different design constraints.

Replacement Considerations

Consult official substitution guides for direct equivalents within the SAM3S series. Verify pin-to-pin compatibility and software register compatibility before replacing. Generic ARM Cortex-M3 MCUs may require significant firmware adaptation.