ATSAM3S1BA-AUR

Overview

The ATSAM3S1BA-AUR is a 32-bit microcontroller based on the ARM Cortex-M3 core, operating at a maximum frequency of 64 MHz. It features 64 KB of embedded Flash memory and 16 KB of SRAM. The device is housed in a 64-pin LQFP package with an operating temperature range of -40°C to +85°C. Supply voltage ranges from 1.62 V to 3.6 V. Connectivity includes USB Device, SPI, SSC, UART/USART, I2C, and SD/MMC interfaces. Peripherals comprise DMA, PWM, WDT, POR, and BOD.

Feature Summary

• Integrates an ARM Cortex-M3 processor with Thumb-2 instruction set support for efficient code execution.
• Includes an embedded voltage regulator enabling single-supply operation across the specified voltage range.
• Provides multiple communication interfaces including USB Device, SPI, SSC, and UART/USART for system connectivity.
• Features hardware security mechanisms such as Power-On Reset (POR) and Brown-Out Detection (BOD).

Applications

• General-purpose embedded control systems
• USB-enabled peripheral devices
• Industrial automation controllers
• Consumer electronics requiring low-power processing

Procurement Notes

Verify the specific suffix 'AUR' corresponds to the tape and reel packaging format required for automated assembly processes. Confirm that the 'A' designation aligns with the industrial temperature grade specifications (-40°C to +85°C) for your application environment. Ensure compatibility with the 64-LQFP footprint during PCB layout finalization.

Selection Notes

Select this component when a balance of moderate program memory (64 KB) and limited I/O count (37 pins available) is sufficient for the design. It is suitable for applications requiring USB connectivity without external transceivers. Compare against the ATSAM3S series variants if higher RAM or Flash capacity is needed, or consider the ATSAM3N series for cost-sensitive designs with reduced peripheral sets.

Part Context

This part belongs to the Microchip SAM3S family of 32-bit microcontrollers. The family is characterized by pin-to-pin compatibility with legacy SAM7S products and other SAM3S variants. It utilizes the Advanced High-performance Bus (AHB) matrix for efficient data transfer between memories and peripherals.

Replacement Considerations

Direct pin-compatible replacements within the same package include other members of the ATSAM3S family, such as ATSAM3S4BA or ATSAM3S2BA, provided their memory sizes meet requirements. Verify that any substitute maintains the same USB controller capabilities and peripheral availability.