ATSAM3S4CA-CUR

Overview

The ATSAM3S4CA-CUR is a 32-bit microcontroller from the Microchip SAM3S series, built on an ARM Cortex-M3 processor core. It integrates 256KB of in-system programmable Flash memory and operates at a maximum clock frequency of 50 MHz. The device features 79 general-purpose I/O lines and supports multiple communication interfaces including USB, SPI, I2C, and USART. It includes integrated analog peripherals such as a 15-channel 10/12-bit ADC and two 12-bit DACs. The unit is housed in a 100-pin TFBGA package with dimensions of 9mm length.

Feature Summary

• Integrates an ARM Cortex-M3 32-bit RISC processor core for efficient code execution.
• Provides extensive connectivity through multiple serial communication protocols and USB interface.
• Includes mixed-signal capabilities with high-resolution analog-to-digital conversion and digital-to-analog output channels.
• Supports direct memory access to reduce processor overhead during data transfers.

Applications

• Industrial control systems requiring robust processing and analog signal interfacing
• Consumer electronics utilizing USB connectivity for data transfer or power management
• Medical devices needing precise analog signal acquisition via integrated ADCs
• Automotive instrumentation panels relying on reliable MCU performance

Procurement Notes

Verify the specific suffix CUR against official Microchip documentation to confirm the TFBGA-100 package type and industrial temperature range specifications. Ensure compatibility with existing PCB footprints for the 100-ball grid array configuration. Cross-reference the part number with current datasheets to validate manufacturing status and any recent design changes or notices issued by the manufacturer.

Selection Notes

Select this component when a balance of moderate processing speed and rich peripheral integration is required within a compact form factor. The 50 MHz operation suits applications not demanding high-frequency computation but requiring significant I/O count and analog flexibility. Consider the TFBGA package constraints regarding board space and thermal dissipation requirements compared to larger QFP alternatives.

Part Context

This microcontroller belongs to the SAM3S family, which targets cost-sensitive embedded applications. It shares architectural similarities with other SAM3 variants but offers specific memory and pin configurations tailored for mid-range performance needs. The series emphasizes energy efficiency and ease of development through standard ARM toolchains.

Replacement Considerations

Consult official substitution guides for compatible parts within the SAM3S series that match the 256KB Flash capacity and 100-pin footprint. Verify pinout compatibility before replacing with variants like ATSAM3S4CA-AUR, noting potential differences in package style between BGA and LQFP options.