MEMORY DEVICE WITH REDUNDANCY FOR PAGE-BASED REPAIR

Apparatus and methods for page-based soft post package repair are disclosed. Based on data stored in a storage element, an address may be decoded to a prime row, a row-based redundant row, or a page-based redundant row. A match logic circuit may determine whether the address corresponds to a defecti...

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Bibliographische Detailangaben
Hauptverfasser: Morgan, Donald M, Wilson, Alan John, Porter, John David
Format: Patent
Sprache:eng
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Zusammenfassung:Apparatus and methods for page-based soft post package repair are disclosed. Based on data stored in a storage element, an address may be decoded to a prime row, a row-based redundant row, or a page-based redundant row. A match logic circuit may determine whether the address corresponds to a defective prime row and generate a match signal. A decoder can select a redundant row to be accessed instead of a prime row in response to the match signal indicating that the address data corresponding to the address to be accessed matches defective address data stored in a volatile memory. A page-based redundant row allows for page-by-page substitution for defective memory, allowing functional portions of memory to continue to be used.