Method of erasing information stored in a nonvolatile rewritable memory, storage medium and motor vehicle computer

Abstract

Method of erasing information stored in a nonvolatile rewritable memory of a computer, wherein a master module sends erasing requests to a slave module of the computer, the memory including at least two interleaved sectors. The method includes preliminary steps of determining a virtual memory addressing space associated with the memory, in which each sector extends over a specific range of consecutive virtual memory addresses, and establishing a first correspondence function for determining, from a range of virtual memory addresses, the sector or sectors whose contents must be erased, and for each erasing request received by the slave module indicating a range of virtual memory addresses, a step of determining the sector or sectors whose contents must be erased by the slave module. The memory includes a plurality of segments, each segment breaking down into a plurality of sectors and at least two segments including interleaved physical memory addresses.