ATSAM3S1BB-MU

Overview

The ATSAM3S1BB-MU is a 32-bit microcontroller from the Microchip SAM3S series, built on the ARM Cortex-M3 core. It features 64 kB of Flash program memory and 16 kB of SRAM data RAM. The device operates at a maximum clock frequency of 64 MHz with a 32-bit data bus width. It supports an operating voltage range of 1.62 V to 3.6 V and includes 15-channel 12-bit ADCs. The component provides 79 general-purpose I/O pins and integrates interfaces including I2C, SPI, UART, USART, and USB. It is housed in a 64-QFN package and functions within a temperature range of -40°C to +85°C.

Feature Summary

• Integrates high-performance 32-bit ARM Cortex-M3 processor for efficient code execution
• Includes multiple communication peripherals such as USB, SPI, I2C, and UART/USART
• Features integrated analog-to-digital conversion with 12-bit resolution across multiple channels

Applications

• Industrial control systems requiring robust processing capabilities
• Consumer electronics utilizing USB connectivity
• Embedded applications needing reliable serial communication interfaces

Procurement Notes

Verify the specific suffix 'MU' corresponds to the 64-QFN package and industrial temperature grade during procurement. Confirm RoHS compliance status through official Microchip documentation or authorized distributor declarations. Ensure compatibility with existing PCB footprints for the QFN-64 form factor before ordering.

Selection Notes

Select this model when a balance of moderate Flash capacity and extensive I/O count is required. The 64 MHz speed suits applications not demanding higher throughput. Compare against other SAM3S variants if larger memory or different package constraints exist. Verify peripheral availability matches project interface requirements.

Part Context

This component belongs to the SAM3S family of 32-bit microcontrollers based on the ARM Cortex-M3 architecture. The series offers various memory configurations and packages. The ATSAM3S1BB-MU specifically targets applications needing 64 kB Flash and significant GPIO density in a compact surface-mount package.

Replacement Considerations

Consult Microchip official documentation for qualified pin-to-pin or functional replacements within the SAM3S series. Verify memory size, package dimensions, and electrical specifications match before substituting.