ATSAM3S1AA-AU

Overview

The ATSAM3S1AA-AU is a 32-bit microcontroller based on the ARM Cortex-M3 core, operating at a maximum frequency of 48 MHz. It features 64 kB of embedded Flash memory and 16 kB of SRAM. The device includes an internal oscillator and supports multiple communication interfaces including SPI, USART, I2C, and IrDA. It operates within a supply voltage range of 1.62 V to 3.6 V and functions across a temperature range of -40°C to +85°C.

Feature Summary

• Integrates an ARM Cortex-M3 processor with Thumb-2 instruction set support for efficient code execution.
• Provides embedded non-volatile Flash memory with 128-bit wide access and memory accelerator.
• Includes system protection features such as Power-on-Reset (POR) and Brown-out Detection (BOD).
• Supports single-supply operation through an embedded voltage regulator.

Applications

• General-purpose embedded control systems
• Industrial automation controllers
• Consumer electronics devices

Procurement Notes

Verify the specific suffix against official Microchip documentation to confirm package type and temperature grade. Confirm current availability status as product lifecycles may change. Ensure compatibility with existing design constraints regarding pinout and electrical specifications before procurement.

Selection Notes

Select this component for applications requiring a balance of processing power and low power consumption. The 48 MHz speed and 64 kB Flash are suitable for moderate complexity firmware. Verify that the 48-pin LQFP package fits the board layout and that the 3.6 V maximum voltage aligns with the system power rails.

Part Context

This part belongs to the SAM3S family of microcontrollers from Microchip Technology. These devices are designed for cost-sensitive applications requiring ARM Cortex-M3 performance. The series offers various memory configurations and package options to suit different design requirements while maintaining pin-to-pin compatibility within specific groups.

Replacement Considerations

Check for direct replacements within the SAM3S series with matching memory sizes. Verify pin compatibility if substituting with other 48-pin variants. Consult official datasheets for any functional differences in peripheral sets or electrical characteristics between potential substitutes.