Invention Grant
US07079424B1 Methods and systems for reducing erase times in flash memory devices
有权
用于减少闪存设备中擦除时间的方法和系统
- Patent Title: Methods and systems for reducing erase times in flash memory devices
- Patent Title (中): 用于减少闪存设备中擦除时间的方法和系统
-
Application No.: US10945914Application Date: 2004-09-22
-
Publication No.: US07079424B1Publication Date: 2006-07-18
- Inventor: Sungchul Lee , Sheunghee Park , Yue-Song He , Ming Sang Kwan
- Applicant: Sungchul Lee , Sheunghee Park , Yue-Song He , Ming Sang Kwan
- Applicant Address: US CA Sunnyvale
- Assignee: Spansion L.L.C.
- Current Assignee: Spansion L.L.C.
- Current Assignee Address: US CA Sunnyvale
- Agency: Harrity Snyder, L.L.P.
- Main IPC: G11C11/34
- IPC: G11C11/34

Abstract:
A method is provided for erasing a memory cell having a substrate, a control gate, a floating gate, a source region and a drain region. The method includes pre-programming the memory cell to raise a threshold voltage of the memory cell to a first predetermined level, wherein pre-programming the memory cell does not include a verification process for ensuring that the threshold voltage of the memory cell has been raised to the first predetermined level. The memory cell may be erased to lower the threshold voltage of the memory cell to a second predetermined level.
Information query