ATSAM3S8BA-AUR

Overview

The ATSAM3S8BA-AUR is a 32-bit microcontroller from the SAM3S series, featuring an ARM Cortex-M3 core operating at up to 64MHz. It integrates 512KB of Flash memory and 64KB of SRAM within a 64-pin LQFP package. The device supports a supply voltage range of 1.62V to 3.6V and includes high-speed peripherals such as USB 2.0 Full Speed, HS SD/SDIO/MMC, USART, and SPI. It also provides up to 16-channel 12-bit ADCs with PGA, two 12-bit DACs, and multiple timers.

Feature Summary

• Integrates an ARM Cortex-M3 processor with Memory Protection Unit (MPU) for enhanced system security.
• Features native support for capacitive touch via QTouch library and flexible power management options.
• Includes high-speed communication interfaces like USB 2.0 FS Device and HS SD/SDIO/MMC controllers.
• Provides advanced analog capabilities with 12-bit ADCs featuring programmable gain amplifiers and differential inputs.

Applications

• Consumer goods and toys
• Industrial control systems
• Metering devices
• Medical equipment
• Test and measurement instruments

Procurement Notes

Verify the specific ordering suffix against official Microchip documentation to confirm package type and temperature range. Ensure compatibility with existing PCB footprints for the 64-LQFP configuration. Confirm that the selected variant meets all required electrical specifications for the target application environment.

Selection Notes

Select this component when a balance of processing power and peripheral integration is required in a compact form factor. Consider the 64-pin LQFP package for applications needing extensive I/O without increasing board space. Evaluate power consumption requirements against the specified low-power modes if battery operation is critical.

Part Context

This part belongs to the Atmel SMART SAM3S Series, which offers pin-to-pin compatibility with the legacy SAM7S series. The series is designed for high integration and low power consumption, targeting applications requiring robust real-time performance. The manufacturer transitioned from Atmel to Microchip Technology following their acquisition.

Replacement Considerations

ATSAM3S8CA-AU

FAQ

Does the ATSAM3S8BA-AUR support dual-bank Flash?

No, the dual-bank Flash feature is available on the 'D' variants (e.g., ATSAM3SD8BA), not the standard 'B' series parts like the ATSAM3S8BA.

What is the maximum clock frequency of the core?

The ARM Cortex-M3 core runs at up to 64MHz.