HCC expands fail-safe FTL for NAND to include deterministic operation

HCC expands fail-safe FTL for NAND to include deterministic operation

By eeNews Europe

Engineers using NAND flash for safety-based systems in automotive, aerospace, and industrial applications can use HCC’s SafeFTL for stable and predictable operation of the NAND flash. The deterministic SafeFTL has been fully verified both in simulated environments and on NAND flash arrays.

FTL manages an array of NAND flash to create a logical interface that software can use. This includes wear levelling, bad block handling, and other subtleties. However, existing FTLs stall at some point for a variable period of time, particularly when placed under heavy load.

Safety-critical systems require accurate time division for the delivery of safety. HCC’s deterministic SafeFTL helps integrate arrays of NAND flash without disturbing the predictability of the system. Deterministic FTL enables the host or safety system to know how long operations will take and respond by either scheduling tasks appropriately or executing them in multiple steps. The host system gets the length of time a flash operation will take from the FTL and can schedule an appropriate time slot, or can spread complex operations over multiple time slots, while leaving the NAND flash accessible to other tasks.

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