Write VCCMIN improvement scheme
AssigneeTaiwan Semiconductor Manufacturing Company, Ltd.
InventorsCheng Hung Lee, Hung-Jen Liao, Kun-Lung Chen
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Abstract
A semiconductor memory is disclosed, which comprises a plurality of memory cells, at least one high voltage power supply (CVDD) line coupled to the plurality of memory cells for supplying power to the same, and at least one controllable discharging circuit coupled between the CVDD line and a complementary low voltage power supply (ground), wherein only during a write operation the controllable discharging circuit is turned on for discharging the CVDD line.
Claims20
A semiconductor memory comprising:
- a plurality of memory cells;
- at least one high voltage power supply (CVDD) line coupled to the plurality of memory cells for supplying power to the same;
- and
- at least one controllable discharging circuit coupled between the CVDD line and a complementary low voltage power supply (ground),
- wherein only during a write operation the controllable discharging circuit is turned on for discharging the CVDD line.
A static random access memory (SRAM) comprising:
- a plurality of SRAM cells;
- at least one high voltage power supply (CVDD) line coupled to the plurality of SRAM cells for supplying power to the same;
- and
- at least one controllable discharging circuit coupled between the CVDD line and a complementary low voltage power supply (ground),
- wherein only during a write operation the controllable discharging circuit is turned on for discharging the CVDD line.
A semiconductor memory comprising:
- a plurality of memory cells;
- at least one high voltage power supply (CVDD) line coupled to the plurality of memory cells for supplying power to the same;
- and
- at least one NMOS transistor with a source, drain and gate coupled to a complementary low voltage power supply (ground), the CVDD line and a control signal, respectively,
- wherein only during a write operation the NMOS transistor is turned on for discharging the CVDD line.
Dependencies are inferred from the claim text.