Patent ID: 9583219
Date: 2017-02-28
CPC Classifications: G06F,G11C

Claim:
1. A method for repair of a random access memory (RAM) having a redundancy circuit, comprising: receiving error information, wherein the error information identifies a fail address of the RAM; and in response to the error information, applying a one-time programming to the redundancy circuit and, while applying the one-time programming to the redundancy circuit, maintaining a content of the RAM in a valid state, wherein maintaining the content of the RAM in the valid state comprises applying a plurality of refresh bursts to the RAM, each refresh burst of the plurality of refresh bursts spaced apart by a non-refresh interval that includes the end of a refresh burst and a start of a next refresh burst of the plurality of refresh bursts, wherein applying the one-time programming comprises applying the one-time programming between the end of the refresh burst and the start of the next refresh burst, and wherein the one-time programming has a duration that is less than a duration of the non-refresh interval.