ATSAM3S8BA-AU

Overview

The ATSAM3S8BA-AU is a 32-bit microcontroller from the Microchip SAM3S series, built on the ARM Cortex-M3 core. It operates at a maximum frequency of 64 MHz and features 512 KB of in-system programmable Flash memory alongside 64 KB of SRAM. The device supports a supply voltage range of 1.62 V to 3.6 V and includes an internal oscillator. Connectivity options encompass USB, SPI, I2C, USART, SSC, EBI/EMI, IrDA, and SD/MMC interfaces. Peripheral functions include DMA, PWM, I2S, watchdog timer, power-on reset, and brown-out detection. It provides 47 general-purpose I/Os and integrates multiple analog converters.

Feature Summary

• Integrates a high-performance ARM Cortex-M3 processor with single-cycle multiplication and hardware division for efficient code execution.
• Provides extensive connectivity through integrated USB Full-Speed controller, multiple serial communication interfaces, and external bus interface.
• Includes advanced analog capabilities with multiple ADC channels and DAC outputs for signal processing applications.
• Features low-power management modes including sleep, wait, and stop modes to optimize energy consumption.

Applications

• Industrial control systems requiring robust peripheral integration
• Consumer electronics utilizing USB connectivity
• Medical devices needing precise analog-to-digital conversion
• Automotive instrumentation within specified temperature ranges

Procurement Notes

Verify the specific suffix 'BA' indicates the commercial/industrial temperature grade and package type against the official datasheet. Confirm assembly site changes via recent Product Change Notices (PCNs) as manufacturing locations may shift. Ensure compatibility with existing PCB footprints for the LQFP-64 package. Check for any RoHS or REACH compliance updates relevant to your region's regulations before finalizing procurement.

Selection Notes

Select this component when 512 KB of Flash and 64 KB of RAM are required for complex firmware. The 64 MHz clock speed suits applications needing moderate processing power without the complexity of higher-end cores. The inclusion of USB and EBI makes it suitable for data logging or display interfacing. Compare pin counts and peripheral sets against alternatives like the ATSAM3S8CA if more I/Os are needed.

Part Context

This part belongs to the ATSAM3S family, designed for cost-sensitive embedded applications. It shares architectural similarities with other SAM3 variants but differs in memory size and package options. The SAM3S series targets general-purpose microcontroller needs, balancing performance and power efficiency. It is distinct from the SAM4 series which utilizes the Cortex-M4 core with DSP extensions.

FAQ

What is the maximum operating frequency of the ATSAM3S8BA-AU?

The maximum operating frequency is 64 MHz.

Does this microcontroller support USB communication?

Yes, it includes an integrated USB Full-Speed controller.

What is the package type for the ATSAM3S8BA-AU?

It is housed in a 64-pin LQFP package.