Sciopta Flash File System

High performance file system designed and tested to handle unexpected resets cleanly. Can be used for driver on all NOR, NAND and serial flash types.

SFFS is a file system targeted at embedded devices which use NOR or NAND type flash devices that require a high degree of reliability. The system is completely protected against unexpected power-failure or reset.

SFFS Tiny Flash File System

SFFS Tiny is a failsafe file system designed for any flash device with small erasable sectors. Ideal for most standard serial flash parts, Flash based Micros with small erasable sectors and RAM drives.

Flash technology is constantly changing and comes in many variants. To get the most from any particular flash arrangement file systems need to be crafted. SFFS Tiny is crafted to work with flash which has small erasable sectors with the specific design goals of being failsafe, having small ROM footprint and minimal RAM footprint - making it possible to use with very small microcontrollers.

Features

100% Power Fail Safe	Long Filenames	Multiple Volumes
Directory Handling	Multiple simultaneous files open	ECC algorithms
Unicode16 support	Mix of media types	Erase Suspend/Resume
Bad Block handling	Wear-Leveling (Static and Dynamic)	Reserved Sectors
Sample Drivers

SFFSN Flash File System NAND

SFFSN is designed to support all types of standard NAND flash.

NAND flash is a relatively new flash technology designed to store large amounts of non-volatile data at reduced cost. It is characterized by having storage that can only be written to if previously erased - these blocks erase quicker than on NOR flash but is still quite long. Other features that differentiate it from NOR flash are that it is often shipped with a number of bad-blocks and their reliability is much increased if all single bit errors are detected and fixed.

There are many different NAND flash devices available all with slightly different characteristics while retaining the same base properties. The system supports all known manufacturers devices including: Samsung, Renesas, Toshiba, Micron and ST Micro. Sample drivers are provided for Samsung, ST, and Micron devices.

NOR Flash

SFFS is designed to support all types of standard NOR flash. NOR flash is one of the base building blocks of most embedded systems. It contains non-volatile storage of data and code for systems and is characterized by having storage that can only be written to if previously erased and erasable blocks with relatively long erase times.

Sample Drivers

Provided with the system is a range of sample drivers for various flash devices from different manufacturers. The sample drivers are carefully documented in the developer's guide to allow easy porting to whatever chip/hardware configuration is required.

Devices Supported

There are literally thousands of NOR flash devices available all with slightly different characteristics while retaining the same base properties. The system supports many known manufacturers devices.

Sciopta Flash File System

Please ask for information about supported devices