ATSAM4S2BB-AN

Overview

The ATSAM4S2BB-AN 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 a 12-bit ADC with 11 channels and two 12-bit DACs. It supports interfaces including USB, SPI, I2C, USART, SSC, and IrDA. The unit is housed in a 64-LQFP package and functions within a supply voltage range of 1.62 V to 3.6 V across an industrial temperature range of -40°C to 105°C.

Feature Summary

• Integrates a high-performance 32-bit ARM Cortex-M4 processor with hardware floating-point unit for efficient digital signal processing.
• Includes a full-speed USB Device Port with dedicated DMA controller for high-throughput data transfers.
• Features flexible connectivity options supporting multiple communication protocols such as SPI, I2C, USART, and SSC.
• Provides integrated analog peripherals including multi-channel ADCs and DACs for sensor interfacing.

Applications

• Industrial control systems requiring robust processing and communication capabilities.
• Consumer electronics utilizing USB connectivity for data transfer or power management.
• Medical devices needing precise analog signal acquisition via integrated ADCs.
• Smart metering applications operating under strict environmental temperature constraints.

Procurement Notes

Verify the specific suffix 'AN' against official Microchip documentation to confirm the package type and temperature grade. Ensure compatibility with existing PCB footprints for the 64-LQFP form factor. Cross-reference the component marking code with datasheet specifications to authenticate the source. Confirm that the intended application environment falls within the specified -40°C to 105°C operational range.

Selection Notes

Select this component when a balance of moderate flash capacity and extensive peripheral connectivity is required. The 120 MHz speed suits applications needing real-time response without the complexity of higher-end cores. Consider the 64-LQFP package if space constraints allow for surface-mount assembly with accessible pins. Evaluate the 1.62 V to 3.6 V supply range against available system power rails.

Part Context

This part belongs to the SAM4S family, designed for cost-sensitive embedded applications. It shares architectural similarities with other SAM4S variants but differs in memory size and pin count. The series targets markets demanding reliable ARM-based performance with integrated analog and communication peripherals.

Replacement Considerations

Consult the SAM4S Series Datasheet for verified cross-references. Potential substitutes may include other SAM4S models with matching memory and interface configurations. Verify pin-to-pin compatibility before substitution to ensure mechanical and electrical integrity.