公开(公告)号：US20210173468A1

公开(公告)日：2021-06-10

申请号：US17109452

申请日：2020-12-02

Applicant: STMicroelectronics SA

Inventor： Michael GIOVANNINI

IPC: G06F1/3234 ,  G11C5/14 ,  G06F1/3287 ,  G06F1/3225

Abstract: A memory includes writable memory units. Each memory unit is configurable: in a retention state wherein the memory unit is capable of retaining data until a subsequent power-off of the memory unit, and in a non-retention state wherein the memory unit does not retain data and consumes less power than in the first state. A controller configures any memory unit of the memory having undergone at least one write access since its last power-up to be in the retention state. The controller further configures at least one memory unit of the memory that has not undergone any write access since its last power-up in the non-retention state.