Method for reading and writing unreliable memories and a corresponding memory controller device and memory

A method of accessing a memory space of a memory device with a decoder, the memory space having faults, including the steps of performing a memory access operation by an electronic device to a access a logical memory space of the memory device, and randomizing the memory access operation with a randomization logic to access data from a physical memory space based on the logical memory space, the randomization logic providing time varying behavior for accessing the physical memory space.