ATSAM4SD16CA-CFU

Overview

The ATSAM4SD16CA-CFU is a 32-bit microcontroller based on the ARM Cortex-M4 core, operating at a maximum frequency of 120 MHz. It features 1 MB of embedded Flash memory and 160 kB of SRAM. The device includes a Static Memory Controller supporting SRAM, PSRAM, NOR, and NAND Flash. Connectivity options include USB 2.0 Device, up to two USARTs with IrDA support, SPI, I2C, SSC, and SD/MMC interfaces. It provides 79 general-purpose I/O pins and integrates multiple timers, DMA channels, and analog peripherals such as 16-channel 12-bit ADCs.

Feature Summary

• Integrates an ARM Cortex-M4 processor with DSP instruction set and Memory Protection Unit for secure execution.
• Includes dual-bank Flash memory architecture with optional cache functionality to enhance code execution speed.
• Features an embedded voltage regulator enabling single-supply operation across industrial temperature ranges.
• Supports low-power modes including Sleep and Backup, achieving ultra-low current consumption in standby states.

Applications

• Industrial control systems requiring robust peripheral connectivity
• Medical devices utilizing high-precision analog-to-digital conversion
• Consumer electronics employing USB communication interfaces
• Automotive applications needing reliable real-time processing

Procurement Notes

Verify the specific suffix 'CFU' against official Microchip documentation to confirm package type and temperature range. Ensure compatibility with existing PCB footprints for the VFBGA package. Check for any recent Product Change Notifications regarding assembly sites or labeling changes before finalizing procurement orders.

Selection Notes

Select this component when a balance of high-performance processing and extensive peripheral integration is required. The SAM4S series offers pin-to-pin compatibility with SAM3N and SAM3S products, facilitating migration from legacy designs. Consider the 160 kB SRAM size relative to application stack requirements and verify that the 120 MHz clock speed meets timing constraints.

Part Context

This part belongs to the SAM4S family of microcontrollers, designed for cost-sensitive applications demanding Cortex-M4 performance. The family distinguishes itself through integrated static memory controllers and flexible power management options. It serves as a bridge between lower-end Cortex-M0/M3 devices and higher-end multi-core solutions like the SAM4E or SAM4C series.

Replacement Considerations

Official pin-compatible alternatives within the same footprint include other variants from the SAM4S family, such as those with different memory sizes. Cross-family replacements may require schematic and firmware modifications due to differing peripheral sets or core architectures.