Using transfer bits during data transfer from non-volatile...

Details Using transfer bits during data transfer from non-volatile... Using transfer bits during data transfer from non-volatile...

G - Physics

11

C

G11C 16/20 (2006.01) G06F 11/10 (2006.01) G11C 5/00 (2006.01) G11C 7/20 (2006.01) G11C 7/24 (2006.01) G11C 11/00 (2006.01) G11C 16/22 (2006.01)

Patent

CA 2463082

Structures and methods for transferring data from non-volatile to volatile memories. An extra bit, called a "transfer bit", is included in each data word. The transfer bit is set to the programmed value, and is monitored by a control circuit during the memory transfer. If the supply voltage is sufficient for correct programming, the transfer bit is read as "programmed", and the data transfer continues. If the supply voltage is below the minimum supply voltage for proper programming, the transfer bit is read as "erased", and the data transfer is reinitiated. In one embodiment, a second transfer bit set to the "erased" value is included in each word.

L'invention porte sur des structures et procédés de transfert de données de mémoires non volatiles vers des mémoires volatiles. A cet effet on introduit dans chaque mot de données un "bit de transfert", fixé à la valeur programmée, et suivi par un circuit de contrôle pendant le transfert entre mémoires. Si la tension d'alimentation est suffisante pour assurer une programmation correcte, le bit de transfert est lu comme étant "programmé", et le transfert de données se poursuit; si la tension d'alimentation est insuffisante pour assurer une programmation correcte, le bit de transfert est lu comme étant "effacé", et le transfert de données est relancé. Dans une exécution, on inclut dans chaque mot un deuxième bit de transfert portant la mention "effacé".

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