ATSAM4CMS4CB-AUR

Overview

The ATSAM4CMS4CB-AUR is a 32-bit ARM Cortex-M4 microcontroller from Microchip Technology's SAM4CM series. It features a single-core architecture operating at a maximum clock frequency of 120 MHz. The device integrates 256 kB of Flash program memory and 152 kB of SRAM data memory. It utilizes a 100-LQFP surface-mount package with an industrial temperature range of -40°C to +85°C. Key peripherals include a 10-bit ADC with 6 channels, multiple communication interfaces such as I2C, SPI, UART, and USART, and 57 general-purpose I/O pins. The supply voltage operates between 1.62 V and 3.6 V.

Feature Summary

• Integrates a single ARM Cortex-M4 core for high-performance processing
• Includes dedicated hardware cryptographic acceleration capabilities
• Supports multi-phase motor control applications via integrated analog front-end functions
• Provides extensive connectivity through standard serial communication interfaces

Applications

• Single-phase motor control systems
• Multi-channel analog front-end signal processing
• Industrial automation controllers requiring cryptographic security
• Smart metering devices with low power requirements

Procurement Notes

Verify the specific suffix 'AUR' indicates the tape and reel packaging variant distinct from the 'AU' tray version. Confirm current availability status as distribution channels may list this component as obsolete or limited stock. Ensure compatibility with existing PCB footprints for the 100-LQFP package before ordering. Cross-reference the manufacturer's latest datasheet for any recent errata or design warnings affecting production reliability.

Selection Notes

Select this model when a single-core Cortex-M4 solution with integrated crypto and AFE features is required. Compare against the ATSAM4CMS4CC-AU if dual-core processing is necessary instead. Evaluate memory requirements carefully, as this part offers 256 kB Flash and 152 kB RAM. Consider the 100-LQFP package constraints for board space. Verify that the 120 MHz speed and peripheral set meet the specific application timing and interface needs.

Part Context

This component belongs to the SAM4CM family, designed for high-performance embedded applications. It shares architectural similarities with other SAM4CM variants but differs in core configuration and memory size. The series targets cost-sensitive applications requiring robust security and analog integration. It complements the broader Microchip MCU portfolio by offering specialized features for motor control and secure communication tasks within the industrial sector.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Users should consult Microchip's official tool selector for direct replacements based on updated product lines.