ATSAM3S1CA-CUR

Overview

The ATSAM3S1CA-CUR is a microcontroller from the Microchip SAM3S series, featuring an ARM Cortex-M3 core operating at a maximum clock frequency of 64 MHz. It integrates 128 kB of Flash program memory and 32 kB of SRAM data RAM within a 100-pin TFBGA package. The device supports a supply voltage range of 1.62 V to 3.6 V and includes a 12-bit ADC with 15 channels. It provides 79 general-purpose I/Os and interfaces including USB, SPI, I2C, UART, USART, and SSC.

Feature Summary

• Integrates an ARM Cortex-M3 processor core for efficient code execution
• Includes embedded Flash memory for non-volatile program storage
• Supports multiple communication protocols via integrated peripheral controllers
• Features a high-resolution analog-to-digital converter for signal acquisition

Applications

• Industrial control systems requiring robust processing
• Consumer electronics utilizing USB connectivity
• Sensor interface modules with analog input requirements
• General-purpose embedded applications in compact form factors

Procurement Notes

Verify the specific suffix CUR indicates the tape and reel packaging format and industrial temperature grade. Confirm the pinout compatibility with existing designs using the official datasheet. Ensure the voltage domain matches the system requirements as the core operates at 1.62 V to 3.6 V while I/Os are typically 3.3 V tolerant. Check for any recent product change notices affecting assembly or marking.

Selection Notes

Select this component when a balance of moderate memory capacity and low pin count is required. The 100-pin TFBGA package suits space-constrained designs. Consider the 64 MHz performance limit against application processing needs. Verify that the 128 kB Flash and 32 kB RAM meet software footprint requirements before finalizing the design.

Part Context

This part belongs to the SAM3S family of 32-bit ARM-based microcontrollers. The series is designed for cost-sensitive applications needing reliable performance. The ATSAM3S1CA variant specifically offers 128 kB of Flash. The C suffix denotes the TFBGA package type, while UR indicates the reel packaging configuration for automated assembly.

Replacement Considerations

Cross-reference with other SAM3S variants such as ATSAM3S2CA or ATSAM3S4CA if higher memory is needed. Ensure pin compatibility when substituting within the same package family. Verify electrical specifications match the original design constraints.