![[Examples of application field]
Data preservation and data logging in various types of equipment
Preservation of number of revolutions, temperature and other data in industrial equipment
Preservation of a history of operations and settings alteration for remote equipment failure diagnostic
Preservation of personal information in health equipment and similar other equipment used individually
Preservation of heart rate and blood pressure data in health equipment
Preservation of physical exercise data in training equipment
Updating of programs and data in various types of equipment
Flash memory rewriting with programs or data stored in a memory card in places where equipment is installed
[Conceptual image of a health management system constructed]
This system is comprised of the microcontrollers, file system and a PC. The revolutions of the bicycle wheels are detected by the microcontroller, and the number of revolutions per unit time is saved in an MMC (multimedia card). After that, the MMC is inserted into the PC, in which it is converted to a file handleable in a PC with the press of a button. Then information such as travel distance or consumed calorie is displayed in Excel.](/image/renesas/fs_tfs_demo.gif)

M3S-TFS-Tiny (hereafter abbreviated TFS) is an original file system which just requires small memory.
We have the various lineup of MCUs, including R8C Family, which are suitable for use in applications such as single-function home appliances and compact industrial equipment, where the incorporation of more sophisticated functionality or the newest technology, with a negligible increase in cost, is desired. To support such development activities, Renesas offers software libraries with only the essential features for application, at low cost.
Use TFS in any device incorporating a target microcontroller for functions such as accumulating measured or archived data, or rewriting a stored program via memory card. Although TFS is an original file system optimized for the target microcontrollers, its wrapping function for FAT file system compatibility and PC data exchange capability enable analysis and management of data by a PC application. Of course, these and other functions can be built in compactly and at low cost.