ATSAM4S4CA-AU

Overview

The ATSAM4S4CA-AU is a 32-bit microcontroller based on the ARM Cortex-M4 core, operating at 120 MHz. It features 256 KB of Flash memory and 64 KB of SRAM. The device includes an external bus interface, high-speed SDIO/SD/MMC support, three SPIs, two I2Cs, two USARTs, and full-speed USB. Analog peripherals consist of sixteen 12-bit ADC channels, two 12-bit DACs, a temperature sensor, and an analog comparator. System controls include a power-on reset, brown-out detector, watchdog timer, real-time clock, and a CRC unit.

Feature Summary

• High-performance processing with integrated Flash read accelerator and optional cache memory
• Low-power operation achieving 180 µA/MHz in dynamic mode and 1 µA in backup mode
• Hardware code protection preventing unauthorized access to on-chip memory
• Native support for Microchip QTouch capacitive touch technology

Applications

• Consumer goods and toys
• Industrial control systems
• Metering devices
• Medical equipment
• Test and measurement instruments

Procurement Notes

Verify the specific package type and pin count required for your design against the datasheet specifications. Confirm that the operating temperature range meets your application requirements. Ensure compatibility with existing development tools such as Atmel Studio. Check for any recent product change notices regarding assembly locations or packaging updates before finalizing procurement.

Selection Notes

Select this component when a balance of performance and memory density is needed within the SAM4S family. It offers pin-to-pin compatibility with SAM4N, SAM3S, SAM3N, and SAM7S devices for easier migration. Consider the availability of the 100-pin LQFP package for designs requiring extensive I/O connectivity. Evaluate the power consumption characteristics if battery-operated applications are involved.

Part Context

This part belongs to the SAM4S series of 32-bit MCUs from Microchip Technology. The series is designed to extend the portfolio with increased performance and power efficiency. It supports scalable memory densities up to 2 MB of Flash and 160 KB of SRAM across different variants in the family.

Replacement Considerations

ATSAM4S4CA-CFU

FAQ

Does the ATSAM4S4CA-AU support capacitive touch interfaces?

Yes, the SAM4S series provides native support for Microchip's QTouch technology, allowing for the implementation of buttons, sliders, and wheels.

What is the maximum operating frequency of the ATSAM4S4CA-AU?

The device operates at a maximum frequency of 120 MHz.