Invention Grant
- Patent Title: Semiconductor memory device and control method of the same
- Patent Title (中): 半导体存储器件及其控制方法相同
-
Application No.: US11778220Application Date: 2007-07-16
-
Publication No.: US07652928B2Publication Date: 2010-01-26
- Inventor: Kosuke Yanagidaira , Koichi Fukuda , Takahiko Hara
- Applicant: Kosuke Yanagidaira , Koichi Fukuda , Takahiko Hara
- Applicant Address: JP Tokyo
- Assignee: Kabushiki Kaisha Toshiba
- Current Assignee: Kabushiki Kaisha Toshiba
- Current Assignee Address: JP Tokyo
- Agency: Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
- Priority: JP2006-198508 20060720
- Main IPC: G11C16/06
- IPC: G11C16/06

Abstract:
A semiconductor memory device includes a memory cell array, a voltage generating circuit, a memory circuit which stores a reference pulse number of an advance-write voltage of the memory cell array and a parameter, and a control circuit which controls, when a pulse number of the advance-write voltage is less than the reference pulse number of the advance-write voltage, the voltage generating circuit in a manner to decrease at least an initial value of a write voltage and a step-up width of the write voltage in accordance with the parameter.
Public/Granted literature
- US20080205137A1 SEMICONDUCTOR MEMORY DEVICE AND CONTROL METHOD OF THE SAME Public/Granted day:2008-08-28
Information query