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FAT File System

File System

Overview

FAT file system for RZ/A series
FAT file system software library for RZ/A series.
FAT file system [M3S-TFAT-Tiny] for RL78 Family
Memory-saving type FAT file system software for the RL78 Family.
FAT file system [M3S-TFAT-Tiny] for RX Family
Memory-saving type FAT file system software for the RX Family.

Documentation

Support

Support Communities

  1. Fat File System supporting V850, SH and RX

    Has anyone used this open source file system? I'm curious to see if there is example code written for the YRDKRX62N board?http://elm-chan.org/fsw/ff/00index_e.html

    Mar 30, 2011
  2. Error on Sample program that uses Open Source FAT File System

    Hello,I import from HEW a sample program of the aplication note "Sample program that uses Open Source FAT File System [M3S-TFAT-Tiny] Module Firmware Integration Technology". I use the e2 studio IDE, version: 3.1.0.24 and the RX Compiler version 2.02.00 for the RX62N ...

    Oct 15, 2014
  3. File system on flash memory [RX71M Revelation Kit]

    Hello, I'm new to MCU generally and I've recently started using the RX71M Revelation kit and would like to write files on the flash memory on the board. I found this library for a FAT file system but seems not to have support for flash. https:// ...

    Nov 28, 2019
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Knowledge Base

  1. RA Family: Cases Where ff_fopen() Processing Time Becomes Long When Using USB Mass Storage

    ... the characteristics of the FAT file system. In particular, the allocation unit size and the state of free space are dominant factors. Questions When performing file write operations using USB mass storage,the file open operation (ff_fopen()) may take longer than expected. Is this behavior caused by an issue ...

    Jan 5, 2026
  2. Tasks (such as initialization) required before the M3S-TFAT-Tiny module can be used for serial flash memory

    ... /www.renesas.com/software-tool/fat-file-system-m3s-tfat-tiny-rx-family From the above webpage, you can access “Open Source FAT File System M3S-TFAT-Tiny Module Firmware Integration Technology Rev.4.02”, where you can obtain the ZIP file that contains the FITDemos folder ...

    Apr 23, 2025
  3. sf_el_fx Module Guide Resources

    Information on the module guide itself and the associated resources and known issues are available here.   Introduction The FileX Port Block Media Framework module supports the Express Logic FileX system, a complete FAT format media and a file management system for deeply embedded applications.   The FileX Port Block Media Framework ...

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