| US 7,372,761 B2 | ||
| Semiconductor device, nonvolatile semiconductor memory, system including a plurality of semiconductor devices or nonvolatile semiconductor memories, electric card including semiconductor device or nonvolatile semiconductor memory, and electric device with which this electric card can be used | ||
| Kazushige Kanda, Kanagawa (Japan); Koichi Kawai, Kanagawa (Japan); Hiroshi Nakamura, Kanagawa (Japan); and Kenichi Imamiya, Tokyo (Japan) | ||
| Assigned to Kabushiki Kaisha Toshiba, Tokyo (Japan) | ||
| Filed on Sep. 15, 2006, as Appl. No. 11/521,694. | ||
| Application 11/052558 is a division of application No. 10/322349, filed on Dec. 18, 2002, granted, now 6,870,786. | ||
| Application 11/521694 is a continuation of application No. 11/337999, filed on Jan. 24, 2006, granted, now 7,123,526. | ||
| Application 11/337999 is a continuation of application No. 11/052558, filed on Feb. 07, 2005, granted, now 7,016,241. | ||
| Claims priority of application No. 2001-386222 (JP), filed on Dec. 19, 2001. | ||
| Prior Publication US 2007/0008803 A1, Jan. 11, 2007 | ||
| Int. Cl. G11C 7/00 (2006.01) | ||
| U.S. Cl. 365—226 [365/228] | 17 Claims |
| 1. A method of operating a nonvolatile semiconductor memory device comprising:
detecting a turn on of power;
outputting a busy status;
performing an initialization operation; and
terminating output of the busy status after the power level reaches a predetermined level.
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