ATSAM3S2CA-CU

Overview

The ATSAM3S2CA-CU is a 32-bit microcontroller from the Microchip SAM3S series, featuring an ARM Cortex-M3 core. It integrates 128 kB of Flash memory and 32 kB of SRAM. The device operates at a maximum clock frequency of 64 MHz and supports a supply voltage range of 1.62 V to 3.6 V. It provides 79 general-purpose I/O pins and includes multiple communication interfaces such as SPI, UART, USART, I2C, USB Full-Speed, and SSC. The component is housed in a 100-pin TFBGA package and is rated for industrial temperature operation between -40°C and +85°C.

Feature Summary

• Integrates a high-performance ARM Cortex-M3 processor with up to 64 MHz execution speed.
• Includes comprehensive peripheral sets supporting USB connectivity, DMA, and various serial communication protocols.
• Features low-power modes including idle, wait, sleep, and stop to optimize energy consumption.

Applications

• Industrial control systems requiring robust processing and connectivity
• Consumer electronics utilizing USB interfaces
• Medical devices needing reliable MCU performance

Procurement Notes

Verify the specific suffix 'CU' against official Microchip documentation to confirm the exact package type and temperature grade. Ensure compatibility with existing PCB footprints for the 100-pin TFBGA configuration. Check for end-of-life status or alternative recommendations directly from the manufacturer before finalizing procurement plans.

Selection Notes

Select this component when a balance of moderate Flash capacity and extensive I/O count is required within a compact BGA footprint. It is suitable for designs needing integrated USB functionality without external transceivers. Consider the 64 MHz speed limit compared to higher-end SAM3X variants if real-time performance constraints exist.

Part Context

This part belongs to the SAM3S family, designed for cost-sensitive applications requiring ARM Cortex-M3 capabilities. It shares architectural similarities with other SAM3N and SAM3S variants but offers distinct memory and interface configurations tailored for general-purpose embedded control tasks.

Replacement Considerations

Consult Microchip's official cross-reference tools for verified substitutes. Potential alternatives within the same family include ATSAM3S2CA-AU (LQFP package) or ATSAM3S4CA variants with increased memory. Verify pinout compatibility and software library support before substitution.