发明名称 |
Non-volatile semiconductor storage device |
摘要 |
According to one embodiment, there is provided a non-volatile semiconductor storage device including a non-volatile memory, a monitoring section, a determining section, and a notification processing section. The non-volatile memory includes a plurality of memory cells driven by word lines and a voltage generating section that generates a read voltage to be applied to the word lines. The monitoring section monitors a change in a threshold distribution of the plurality of memory cells upon performing a read processing to read data from the plurality of memory cells by applying the read voltage to the word lines. The determining section determines a degree of deterioration of the non-volatile memory in accordance with a monitoring result by the monitoring section. The notification processing section notifies a life of the non-volatile memory in accordance with a determining result by the determining section. |
申请公布号 |
US8804435(B2) |
申请公布日期 |
2014.08.12 |
申请号 |
US201213531791 |
申请日期 |
2012.06.25 |
申请人 |
Kabushiki Kaisha Toshiba |
发明人 |
Matsunaga Naoki |
分类号 |
G11C11/34 |
主分类号 |
G11C11/34 |
代理机构 |
Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P. |
代理人 |
Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P. |
主权项 |
1. A non-volatile semiconductor storage device comprising:
a non-volatile memory including a plurality of memory cells driven by word lines and a voltage generating section that generates a read voltage to be applied to the word lines; a monitoring section that monitors a change in a threshold distribution of the plurality of memory cells upon performing a read processing to read data from the plurality of memory cells by applying the read voltage to the word lines; a determining section that determines a degree of deterioration of the non-volatile memory in accordance with a monitoring result by the monitoring section; and a notification processing section that notifies a life of the non-volatile memory in accordance with a determining result by the determining section. |
地址 |
Tokyo JP |