ATSAM4S2BB-MNR

Overview

The ATSAM4S2BB-MNR is a 32-bit microcontroller from the Microchip SAM4S series, built on the ARM Cortex-M4 core. It operates at a maximum frequency of 120 MHz and includes 128 KB of Flash memory and 64 KB of SRAM. The device features an internal oscillator and supports a supply voltage range of 1.62 V to 3.6 V. It integrates multiple communication interfaces including I2C, SPI, USART, USB, and IrDA. The component is housed in a 64-QFN (9x9) package with 47 available I/O lines and functions within a temperature range of -40°C to 105°C.

Feature Summary

• Integrates a high-performance 32-bit ARM Cortex-M4 processor with a floating-point unit for efficient digital signal processing.
• Includes a full-speed USB Device port supporting standard communication protocols without external transceivers.
• Features flexible peripheral sets including multiple serial communication controllers, PWM units, and DMA channels.
• Provides robust analog capabilities with integrated ADCs and DACs for sensor interfacing and signal generation.

Applications

• Industrial control systems requiring real-time processing and robust communication interfaces
• USB-enabled consumer electronics and peripheral devices
• Medical equipment utilizing precise analog-to-digital conversion capabilities
• Smart home automation hubs and IoT gateways

Procurement Notes

Verify the specific suffix MNR indicates tape-and-reel packaging when sourcing components. Confirm the assembly site and date code against current production notices to ensure material consistency. Check for any recent package or label changes documented in product change notifications. Ensure compatibility with existing PCB footprints for the 64-QFN form factor during procurement planning.

Selection Notes

Select this model for designs requiring a balance of processing power and connectivity in a compact surface-mount package. Compare pin counts and memory sizes against other SAM4S variants like the ATSAM4S4B if higher capacity is needed. Evaluate the 120 MHz clock speed against application latency requirements. Consider the operating temperature range for environmental constraints in the final enclosure design.

Part Context

This component belongs to the SAM4S family of microcontrollers based on the ARM Cortex-M4 architecture. The series offers scalable memory options ranging from 128 KB to 2 MB of Flash. It is designed for applications demanding high performance and low power consumption. The family shares common peripheral sets and software libraries, facilitating migration between different pin counts and memory densities within the same ecosystem.

Replacement Considerations

Consult the official SAM4S series datasheet for pin-compatible alternatives within the same package type. Verify that substitute parts maintain identical memory configurations and peripheral availability. Cross-reference errata documents to ensure functional equivalence regarding known silicon revisions.