ATSAM3S1BA-MU

Overview

The ATSAM3S1BA-MU 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. The device operates with a maximum clock frequency of 64 MHz and supports a supply voltage range of 1.62 V to 1.9 V. It includes a 12-bit ADC with 8 channels and provides 34 I/O pins. The component is housed in a QFN-48 package and is rated for an industrial temperature range of -40°C to +85°C.

Feature Summary

• Integrates an ARM Cortex-M3 processor core for efficient 32-bit execution.
• Includes on-chip non-volatile Flash memory for persistent code storage.
• Features integrated analog-to-digital conversion capabilities with multiple input channels.
• Supports standard communication interfaces including SPI and UART.

Applications

• Industrial control systems requiring low-power processing
• Consumer electronics utilizing USB or serial communication
• General-purpose embedded applications with limited pin count requirements

Procurement Notes

Verify the specific suffix 'MU' corresponds to the QFN-48 package and industrial temperature grade (-40°C to +85°C) as documented in official Microchip datasheets. Confirm that the operating voltage range aligns with system power design constraints, specifically the 1.62 V to 1.9 V specification. Ensure compatibility with existing PCB footprints for the 48-pin QFN form factor before procurement.

Selection Notes

Select this component when a balance of moderate memory capacity and low pin count is required for cost-sensitive designs. The 64 MHz performance is suitable for basic control loops and simple protocol handling. Consider the QFN-48 package for space-constrained layouts. Compare against other SAM3S variants if higher memory or additional peripherals are needed.

Part Context

This part belongs to the ATSAM3S family, which utilizes the ARM Cortex-M3 architecture. It is designed for applications needing efficient code execution and low power consumption. The SAM3S series typically integrates USB OTG controllers and various peripheral interfaces, distinguishing it from simpler 8-bit or older 16-bit microcontrollers in similar price ranges.

Replacement Considerations

Consult Microchip documentation for direct pin-compatible or functional substitutes within the SAM3S series, such as the ATSAM3S2BA or ATSAM3S4BA, depending on memory requirements. Verify package availability and lead times for alternative part numbers.