A ROBUST WORDLINE ACTIVATION DELAY MONITOR USING A PLUARALITY OF SAMPLE WORDLINES

摘要

At least one sample wordline and duplicated sample wordline of the present invention are disposed within the same data-storage area of the memory, and the sample wordline selection circuit is configured to duplicate or sample wordline based on the state of nonvolatile input. A wordline activation delay monitoring circuit is disclosed that is coupled to activate a type sample wordline. The word line selection circuit may include one or both of the column decoder circuit or the word line driver circuit having a structure and a position substantially the same as the column decoder circuit and the word line driver circuit used to activate the word lines in the data-storage array region. .;Also disclosed is a wordline activation delay monitoring circuit comprising first and second sample wordlines disposed within a first data-storage array region, and a sample wordline selection circuit, wherein the sample wordline selection circuit includes a second data- Activate the first sample wordline in the default operating mode when the storage array area is accessed, and activate the second sample wordline when the second data-storage array area is accessed in a cycle following the first access cycle.