ATSAM4S16BA-AU

Overview

The ATSAM4S16BA-AU is a 32-bit microcontroller based on the ARM Cortex-M4 core, operating at a maximum frequency of 120MHz. It features 1MB of in-system programmable flash memory and 128KB of SRAM. The device includes an integrated USB 2.0 Full-Speed Device interface, multiple communication peripherals such as SPI, I2C, and USART, and analog converters including 11x 12-bit ADCs and 2x 12-bit DACs. It operates within a supply voltage range of 1.62V to 3.6V and supports an industrial temperature range of -40°C to +85°C.

Feature Summary

• Integrates an ARM Cortex-M4 processor with hardware floating-point unit for efficient signal processing.
• Provides extensive connectivity options including USB 2.0 full-speed device, SD/MMC card interface, and multiple serial communication protocols.
• Features robust security mechanisms with read/write protection for flash and user signature memory.

Applications

• Industrial control systems requiring reliable data acquisition and processing.
• Consumer electronics utilizing USB connectivity for configuration or data transfer.
• Medical devices needing precise analog-to-digital conversion capabilities.
• Smart metering applications with secure code storage requirements.

Procurement Notes

Verify the specific suffix 'AU' corresponds to the LQFP-64 package and industrial temperature grade (-40°C to +85°C). Confirm that the ordering part number matches the exact pinout and memory configuration required for your PCB layout. Ensure compatibility with existing firmware libraries designed for the SAM4S series before finalizing procurement decisions.

Selection Notes

Select this component when a balance of high-performance processing and rich peripheral integration is needed without Ethernet MAC capabilities. It serves as a suitable upgrade path from 8-bit or lower-end 32-bit MCUs where USB functionality and significant flash memory are critical constraints. Consider alternative packages if board space limitations require smaller footprints than the LQFP-64 offers.

Part Context

This device belongs to the Microchip SAM4S family, which targets cost-sensitive applications demanding ARM Cortex-M4 performance. The family shares common architectural features but varies in memory size and package options. The ATSAM4S16BA variant specifically addresses applications requiring 1MB of program storage and moderate I/O counts.

Replacement Considerations

Direct substitutes include other variants within the SAM4S family such as ATSAM4S8BA or ATSAM4S32BA, depending on memory requirements. Cross-family replacements like the SAM4E series offer similar cores but may differ in peripheral sets and power consumption characteristics. Verify pin-to-pin compatibility before substituting.