Apparatus and method for refreshing non-volatile memory

Details Apparatus and method for refreshing non-volatile memory Apparatus and method for refreshing non-volatile memory

G - Physics

06

F

354/237

G06F 11/14 (2006.01) G11C 11/34 (2006.01)

Patent

CA 1174372

ABSTRACT OF THE DISCLOSURE In the refreshing of the memory contents of the non-volatile memory device, a refreshing buffer memory is provided for temporarily storing a data signal of an address to be refreshed. Not only this data signal is stored in the refreshing buffer memory, but also the address of this data signal and the status of the refreshing processes, that is, up to which step of the refreshing routine the refreshing operation has proceeded, is stored in this refreshing buffer memory. Then, even when the power supply is shut off during the course of the refreshing action, at the next chance of the resumption of the power supply, the refreshing routine can correctly be started from the step at which the refreshing routine was previously terminated, thereby the refreshing operation can always be completed correctly.

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