ATSAM4SA16CA-AU

Overview

The ATSAM4SA16CA-AU is a 32-bit microcontroller from the Microchip SAM4S series, featuring an ARM Cortex-M4 core operating at 120 MHz. It integrates 1 MB of flash memory and 128 KB of RAM within a 100-pin LQFP package. The device supports a supply voltage range of 1.62 V to 3.6 V and includes 79 general-purpose I/Os. Peripheral interfaces include USB, Ethernet (EBI/EMI), SPI, I2C, SSC, UART/USART, IrDA, and SD/MMC card support. Analog capabilities consist of sixteen 12-bit ADC channels and two 12-bit DAC outputs.

Feature Summary

• Integrates an ARM Cortex-M4 processor with hardware floating-point unit for efficient digital signal processing.
• Provides extensive connectivity through integrated USB OTG controller and Ethernet MAC interface.
• Includes dedicated DMA controllers to offload data transfer tasks from the CPU.
• Features robust analog conversion with multiple high-resolution ADC and DAC channels.

Applications

• Industrial control systems requiring real-time processing
• Medical devices utilizing high-precision analog inputs
• Consumer electronics with USB connectivity requirements
• Smart metering applications needing reliable data acquisition

Procurement Notes

Verify the specific suffix 'AU' confirms the industrial temperature range and lead-free packaging status. Confirm the 100-LQFP package availability matches your PCB footprint requirements. Check for any recent Product Change Notifications regarding assembly location or marking changes. Ensure compatibility with your existing design tools and development environment before finalizing procurement.

Selection Notes

Select this component when 1 MB of program storage and 128 KB of RAM are required alongside high-speed peripheral interfaces. The inclusion of both USB and Ethernet MAC makes it suitable for connected devices. Compare against the ATSAM4S16CA-AU if the SA variant's specific internal memory mapping or power management features are not critical. Consider the ATSAM4SA16CA-CFU if a smaller BGA package is preferred over the LQFP form factor.

Part Context

This part belongs to the SAM4S family, designed for applications demanding high performance and rich connectivity. It shares the same core architecture as other SAM4S variants but offers specific memory configurations. The 'SA' designation typically indicates a specific sub-series within the broader SAM4S lineup, often sharing pinouts with standard SAM4S parts for easier migration.

Replacement Considerations

ATSAM4S16CA-AU is a direct pin-compatible alternative within the same package. ATSAM4SA16CA-CFU offers identical functionality in a 100-VFBGA package. Verify software compatibility when switching between these options due to potential differences in memory addressing maps.