ATSAM3S1CB-CUR

Overview

The ATSAM3S1CB-CUR is an ARM Cortex-M3 microcontroller from the SAM3S series, manufactured by Microchip Technology. It features a 64 kB Flash program memory and 16 kB SRAM data RAM within a TFBGA-100 package. The device operates at a maximum clock frequency of 64 MHz with a 32-bit data bus width. It supports a supply voltage range of 1.62 V to 1.9 V and includes 79 I/O pins. Key peripherals include a 12-bit ADC with 15 channels, six timers/counters, and interfaces such as I2C, SPI, UART, USART, USB, and I2S. The component is rated for industrial temperature operation between -40°C and +85°C.

Feature Summary

• Integrates an ARM Cortex-M3 processor core for efficient 32-bit execution.
• Provides multiple communication interfaces including USB, SPI, I2C, and UART.
• Includes a 12-bit analog-to-digital converter with fifteen input channels.
• Supports direct memory access and pulse width modulation for peripheral control.

Applications

• Industrial control systems requiring robust communication protocols
• Consumer electronics utilizing USB connectivity
• Data acquisition applications using high-resolution ADC inputs
• Motor control implementations leveraging timer and PWM capabilities

Procurement Notes

Verify the specific suffix CUR indicates the TFBGA-100 package and industrial temperature grade during sourcing. Confirm RoHS compliance status through official Microchip documentation prior to integration. Ensure design compatibility with the specified 1.62 V to 1.9 V core voltage range. Check for any recent product change notices affecting assembly sites or packaging materials.

Selection Notes

Select this component when a balance of moderate flash capacity and extensive I/O count is required in a compact surface-mount package. The SAM3S series offers a cost-effective solution for applications needing USB connectivity without external transceivers. Consider the 64 MHz processing speed sufficient for real-time control loops. Evaluate power consumption requirements against the 3.3 V I/O voltage domain constraints.

Part Context

This microcontroller belongs to the AT91SAM3S family, designed for low-power and high-performance embedded applications. It utilizes the ARM Cortex-M3 architecture, which provides hardware multiplication and division instructions. The series is characterized by its integrated USB OTG controller and flexible DMA system. It serves as a successor to earlier AVR-based solutions, offering enhanced processing capabilities and peripheral integration for modern embedded designs.

Replacement Considerations

Consult Microchip datasheets for pin-compatible alternatives within the SAM3S series, such as variants with different memory sizes like the ATSAM3S4CA or ATSAM3S8CA. Verify that substitute parts maintain the same TFBGA-100 footprint and electrical specifications. Cross-reference interface availability to ensure functional equivalence in the target application.