ATSAM3S8CA-CUR

Overview

The ATSAM3S8CA-CUR is a 32-bit microcontroller from the Microchip SAM3S series, featuring an ARM Cortex-M3 core operating at up to 64 MHz. It integrates 512 KB of in-system programmable flash memory and 64 KB of SRAM. The device is housed in a 100-pin TFBGA package with dimensions of 9x9 mm. It supports a supply voltage range of 1.62 V to 3.6 V and operates within a temperature range of -40°C to +85°C. Key peripherals include USB, SPI, I2C, USART, and multiple ADC channels.

Feature Summary

• Integrates an ARM Cortex-M3 processor core for efficient 32-bit execution
• Includes extensive connectivity options such as USB, SPI, I2C, and USART interfaces
• Features built-in analog-to-digital conversion capabilities with multiple channels
• Supports in-system programming via flash memory for flexible firmware updates

Applications

• Industrial control systems requiring robust communication interfaces
• Consumer electronics utilizing USB connectivity
• Data acquisition applications leveraging integrated ADCs
• Embedded systems needing reliable operation across industrial temperature ranges

Procurement Notes

Verify the specific suffix CUR against official Microchip documentation to confirm the TFBGA-100 package and commercial/industrial temperature rating. Ensure compatibility with existing PCB footprints designed for 9x9 mm BGA components. Cross-reference datasheet revisions to confirm pinout consistency and electrical characteristics before finalizing procurement orders.

Selection Notes

Select this component when a balance of processing power and peripheral richness is required within a compact footprint. The 512 KB flash capacity suits complex firmware applications, while the 64 MHz speed provides adequate performance for real-time tasks. Consider the TFBGA package constraints regarding thermal management and assembly complexity compared to QFP alternatives.

Part Context

This part belongs to the SAM3S family, which targets cost-sensitive applications requiring ARM Cortex-M3 performance. It shares architectural similarities with other SAM3S variants but differs in memory size and package type. The series is widely used in embedded markets where reliability and standard interface support are critical design factors.

Replacement Considerations

Direct substitutes include ATSAM3S8CA-AU (LQFP package) or ATSAM3S8CA-CU (TFBGA package). Verify package dimensions and pin compatibility before substitution. Other SAM3S variants may require firmware adjustments due to differing peripheral counts or memory configurations.