Dual-voltage wordline drive circuit with two stage discharge

Details Dual-voltage wordline drive circuit with two stage discharge Dual-voltage wordline drive circuit with two stage discharge

2008-03-18

2008-03-18

Zarabian, Amir (Department: 2827)

Static information storage and retrieval

Addressing

Particular decoder or driver circuit

C365S189110

Reexamination Certificate

active

11234028

ABSTRACT:
A wordline driver circuit can include single stage level shifters to translate a low voltage level (VGND to Vcc) to a high voltage level (Vnwl to Vpp). A wordline driver can further include a two-stage discharge circuit to pull down a wordline from a boosted high voltage Vpp to a boosted low voltage Vnwl. A two-stage discharge circuit can include (i) a first discharge path that can pull the wordline toward a first low voltage VGND; and (ii) a second discharge path that can pull the wordline toward a lower boosted low voltage Vnwl. Initially discharging a wordline to a first low voltage can reduce the amount of charge injected into a boosted low voltage Vnwl supply. A two-stage discharge circuit can be self timed or externally timed.

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