ATSAM3S2AA-MU

Overview

The ATSAM3S2AA-MU is a 32-bit ARM Cortex-M3 microcontroller from the SAM3S family, housed in a 48-pin QFN EP package. It features 128KB of Flash program memory and 32KB of RAM. The device operates at a maximum CPU frequency of 64 MHz with a 32-bit data bus width. It supports I/O voltages of 1.8V or 3.3V and includes interfaces such as I2C, I2S, SPI, UART, USART, and USB. The component has 34 I/Os, three timers, and four PWM channels.

Feature Summary

• Integrates an ARM Cortex-M3 RISC core for efficient instruction processing.
• Includes on-chip Flash memory for non-volatile program storage.
• Supports multiple communication protocols including USB and serial interfaces.
• Features integrated pulse width modulation capabilities.

Applications

• Embedded control systems requiring ARM Cortex-M3 architecture
• Industrial applications utilizing USB connectivity
• Devices employing serial peripheral interface communication

Procurement Notes

Verify the specific suffix against official Microchip documentation to confirm package type and temperature range. Ensure the part status is active before procurement. Cross-reference the manufacturer part number with authorized distributor catalogs to avoid counterfeit components. Confirm RoHS compliance requirements match project specifications.

Selection Notes

Select this component when a 64 MHz ARM Cortex-M3 solution is required in a compact 48-pin QFN form factor. Consider the 128KB Flash capacity for firmware size constraints. Evaluate the 3.3V I/O voltage compatibility with system peripherals. Verify that the available timer and PWM resources meet application timing needs.

Part Context

This microcontroller belongs to the SAM3S series, designed for cost-sensitive embedded applications. It shares architectural similarities with other SAM3 devices but offers specific memory and pin configurations. The QFN EP package provides thermal performance advantages for surface-mount assembly processes.

FAQ

What is the maximum operating frequency of the ATSAM3S2AA-MU?

The maximum CPU frequency is 64 MHz.

Does the ATSAM3S2AA-MU support USB communication?

Yes, the device includes USB interface capabilities alongside other serial protocols.