ATSAM3S1CA-CU

Overview

The ATSAM3S1CA-CU is a 32-bit microcontroller based on the ARM Cortex-M3 core, belonging to the SAM3S series. It features 64 kB of Flash program memory and 16 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 includes an integrated 12-bit ADC with 15 channels and provides 79 general-purpose I/O pins. Connectivity options include SPI, UART/USART, I2C, SSC, and USB interfaces. The component is housed in a 100-TFBGA (9x9) package and is rated for an operating temperature range of -40°C to +85°C.

Feature Summary

• Integrates a high-performance 32-bit ARM Cortex-M3 processor core running up to 64 MHz.
• Includes non-volatile Flash memory and static RAM for code execution and data storage.
• Features multiple communication peripherals including USB, SPI, UART, and I2C.
• Provides analog-to-digital conversion capabilities via a multi-channel 12-bit ADC.

Applications

• Industrial control systems requiring robust processing and connectivity.
• Consumer electronics utilizing USB interface capabilities.
• General-purpose embedded applications within specified thermal limits.
• Motor control implementations using timer and PWM peripherals.

Procurement Notes

Verify the specific suffix 'CU' corresponds to the 100-TFBGA package and commercial/industrial temperature ratings as defined in the official Microchip datasheet. Confirm that the part status is active or available through authorized distributors, as availability may vary by region. Ensure compatibility with existing PCB footprints for the TFBGA-100 form factor before procurement.

Selection Notes

Select this component when a balance of moderate memory capacity and extensive I/O count is required in a compact BGA package. It is suitable for designs needing USB connectivity without external transceivers. Compare against other SAM3S variants if higher memory or different pin counts are needed. Ensure the design supports the 1.62 V to 3.6 V supply voltage requirements.

Part Context

This microcontroller is part of the Microchip SAM3S family, which targets cost-sensitive applications requiring ARM Cortex-M3 performance. The family shares common peripheral sets and software frameworks, facilitating migration between members with varying memory sizes and package options. The ATSAM3S1CA-CU represents a mid-range configuration within this series.

Replacement Considerations

Direct substitutes within the same package and pinout include other ATSAM3S1xx variants with different suffixes indicating package type or temperature grade. Cross-series replacements like ATSAM3N or ATSAM3U require schematic and firmware modifications due to peripheral differences.