- 专利标题: Supply noise reduction in memory device column selection
-
申请号: US10032375申请日: 2001-12-21
-
公开(公告)号: US06584035B2公开(公告)日: 2003-06-24
- 发明人: Ercole Di lorio , Giulio G. Marotta , Giovanni Santin , Tommaso Vali
- 申请人: Ercole Di lorio , Giulio G. Marotta , Giovanni Santin , Tommaso Vali
- 优先权: ITRM2000A0698 20001228
- 主分类号: G11C800
- IPC分类号: G11C800
摘要:
Column select circuits having improved immunity to supply potential noise during sensing of the programmed state of a target memory cell are suited for use in low-voltage memory devices. Such column select circuits contain driver circuits having a filtered path and an unfiltered path for applying a supply potential to a gate of a pass transistor. The unfiltered path is utilized during a first sensing phase, such as during decoding or precharging of the bit lines, when transition speed of the pass transistors is desired. The filtered path is utilized at least during a second sensing phase while the sensing device is detecting the programmed state of the target memory cell. By reducing the noise of the supply potential using the filtered path, margins are improved on the sensing device and the sensing device is thus capable of operating at lower supply potentials.
公开/授权文献
- US20020172088A1 Supply noise reduction in memory device column selection 公开/授权日:2002-11-21
信息查询