ATSAM4S4CA-CU

Overview

The ATSAM4S4CA-CU is a 32-bit microcontroller from the SAM4S series, built on an ARM Cortex-M4 core operating at 120 MHz. It integrates 256 KB of Flash memory and 64 KB of SRAM within a 100-pin TFBGA package (9x9 mm). The device supports a supply voltage range of 1.62 V to 3.6 V and operates between -40°C and +85°C. Key peripherals include 16-channel 12-bit ADCs, two 12-bit DACs, USB Full-Speed Device, HS SDIO/SD/MMC, three SPIs, two I2Cs, two USARTs, and up to 79 I/O pins.

Feature Summary

• Built-in hardware code protection features including IP protection, secure chip erase, and CRC checks for memory integrity.
• Integrated QTouch capacitive touch support enabling native implementation of buttons, sliders, and wheels.
• Multi-layer AHB bus matrix with 21-channel DMA and distributed memory architecture supporting high data rate communication.

Applications

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

Procurement Notes

Verify the specific package type and temperature grade against project requirements before ordering. Confirm that the 100-pin TFBGA footprint matches the PCB layout design. Ensure compatibility with existing development tools such as Atmel Studio IDE and appropriate evaluation kits like the SAM4S-XPRO or Xplained platforms.

Selection Notes

Select this component when a balance of moderate memory density and high performance is required. The SAM4S series offers pin-to-pin compatibility with SAM4N, SAM3S, SAM3N, and SAM7S devices, facilitating migration. Consider the integrated cache and read accelerator if system performance optimization is critical for the application.

Part Context

This part belongs to the SAM4S family of 32-bit MCUs designed for scalable performance and power efficiency. The series extends Microchip's portfolio by combining increased processing speed with rich peripheral sets for connectivity and analog interfacing. It targets applications requiring robust security features and low power consumption in standby modes.

Replacement Considerations

ATSAM4S4CA-AU (100-pin LQFP)

FAQ

Does the ATSAM4S4CA-CU support capacitive touch sensing?

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

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

The device operates at a maximum frequency of 120 MHz.