ATSAM4S2AA-AU

Overview

The ATSAM4S2AA-AU is a 32-bit microcontroller based on the ARM Cortex-M4 core, operating at 120 MHz. It features 128 KB of Flash memory and 64 KB of SRAM. The device is housed in a 48-pin LQFP package with 34 I/O lines. Power supply ranges from 1.62V to 3.6V, and it supports an operating temperature range of -40°C to 85°C.

Feature Summary

• Built around the ARM Cortex-M4 processor for high performance and power efficiency.
• Integrates hardware code protection including IP protection and secure device reconditioning.
• Offers native support for Microchip QTouch capacitive touch technology.
• Features a multi-layer bus matrix and multi-channel DMA for high data rate communication.

Applications

• Consumer goods and toys
• Industrial control
• Metering
• Medical devices
• Test and measurement

Procurement Notes

Verify the specific ordering suffix against official documentation to confirm package type and temperature grade. Confirm that the 'AU' suffix corresponds to the standard industrial temperature range and LQFP packaging as listed in the manufacturer's ordering guide. Ensure compatibility with existing design constraints before procurement.

Selection Notes

Select this component when a balance of moderate memory density and high processing speed is required within a compact footprint. The 48-pin LQFP package limits pin count compared to larger packages, making it suitable for applications where external memory expansion is not needed but Cortex-M4 performance is essential.

Part Context

This part belongs to the SAM4S series, which provides scalability across memory densities up to 2 MB Flash. The series maintains pin-to-pin compatibility with SAM4N, SAM3S, SAM3N, and SAM7S devices, facilitating migration within the Microchip portfolio.

Replacement Considerations

ATSAM4S2AA-MU (48-pin QFN variant)