ATSAM3S8BA-MU

Overview

The ATSAM3S8BA-MU is a Microchip Technology ARM microcontroller featuring an ARM Cortex-M3 core. It provides 512 kB of Flash program memory and 64 kB of SRAM data RAM within a QFN-64 package. The device operates at a maximum clock frequency of 64 MHz with a 32-bit data bus width. It supports an input voltage range of 1.62 V to 1.9 V and includes 47 I/O lines. Key peripherals include a 12-bit ADC with 11 channels, six timers/counters, and interfaces such as SPI, UART, RS-485, and 2-Wire communication.

Feature Summary

• Integrates an ARM Cortex-M3 processor core for efficient instruction execution.
• Includes on-chip Flash memory for non-volatile program storage.
• Supports multiple serial communication protocols including SPI and UART.
• Features integrated analog-to-digital conversion capabilities.

Applications

• Industrial control systems
• Consumer electronics devices
• General-purpose embedded applications

Procurement Notes

Verify the specific ordering suffix against official Microchip documentation to confirm package type and temperature range. Ensure compatibility with existing board layouts regarding the QFN-64 footprint. Confirm that power supply rails match the specified 1.62 V to 1.9 V operating requirements before integration.

Selection Notes

Select this component when a balance of processing speed and memory capacity is required for cost-sensitive designs. The QFN-64 package offers a compact solution for space-constrained projects. Consider the 64 MHz performance limit and available I/O count relative to system interface needs.

Part Context

This part belongs to the SAM3S series of 32-bit ARM Cortex-M3 microcontrollers. The series is designed for applications requiring high performance and low power consumption. The ATSAM3S8BA-MU represents a specific configuration within this family, defined by its memory size and package variant.

Replacement Considerations

Consult official Microchip substitution guides for verified alternatives. Cross-referencing pinouts and electrical specifications is essential when considering other SAM3S variants or different package options from the same manufacturer.