ATSAM4SD32CA-CFUR

Overview

The ATSAM4SD32CA-CFUR 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 a 2 Kbyte cache. The device features up to 2 Mbytes of embedded Flash memory with optional dual bank implementation and cache support, alongside 160 Kbytes of SRAM. It integrates a 16 Kbyte ROM for boot loader routines and an 8-bit Static Memory Controller. Key peripherals include a Full Speed USB Device port, High Speed MCI, multiple communication interfaces such as USARTs, UARTs, TWIs, SPI, and I2S, plus a 12-bit ADC, 12-bit DAC, and analog comparator.

Feature Summary

• High-performance ARM Cortex-M4 processor with DSP instruction set and Memory Protection Unit
• Extensive memory architecture including large Flash, SRAM, and ROM with Static Memory Controller
• Comprehensive peripheral set supporting USB, SD/MMC, and various serial communication protocols
• Integrated power management features including voltage regulator and low-power modes

Applications

• Industrial control systems requiring robust processing and safety features
• Smart energy applications such as smart meters and grid monitoring
• Consumer electronics utilizing high-speed multimedia interfaces
• Automotive infotainment and instrument clusters

Procurement Notes

Verify the specific suffix CFUR against official Microchip documentation to confirm package type and temperature range. Ensure compatibility with existing PCB footprints for the TFBGA package. Confirm RoHS compliance status for the specific manufacturing batch. Cross-reference pin assignments with the latest datasheet revision to avoid integration errors during design-in.

Selection Notes

Select this component when a balance of high performance and rich peripheral connectivity is required within the SAM4S family. It serves as a suitable upgrade path for legacy SAM7S designs due to pin-to-pin compatibility in certain form factors. Consider the integrated MPU and DSP capabilities for complex algorithm execution. Evaluate the available memory sizes against application requirements before choosing between variants in the series.

Part Context

This part belongs to the SAM4S series of microcontrollers, which are designed for scalable performance and power efficiency. The series targets applications needing a powerful 32-bit RISC processor with extensive memory options. It bridges the gap between lower-end Cortex-M0/M3 devices and higher-end Cortex-M4/M7 solutions, offering a cost-effective platform for mid-range embedded systems.

Replacement Considerations

Check for direct pin-compatible replacements within the SAM4S or SAM4C series if supply constraints exist. Verify that alternative parts maintain the same Flash and SRAM capacities. Ensure that any substitute supports the required peripheral interfaces, particularly the USB and SMC functionalities.