Method of and apparatus for precharging and equalizing local inp

Details Method of and apparatus for precharging and equalizing local inp Method of and apparatus for precharging and equalizing local inp

1999-07-20

2000-10-31

Elms, Richard

Static information storage and retrieval

Read/write circuit

Precharge

36518909, 365229, G11C 700

Patent

active

061412759

ABSTRACT:
An equalization and precharge circuit precharges and equalizes local input/output (LIO) signal lines between each memory access operation within a memory circuit. The equalization and precharge circuit includes a local voltage circuit which maintains the level of the LIO signal lines at a standby voltage level during standby periods. Preferably, the standby voltage level is approximately equal to half of the supply voltage VCC. Separate precharge and equalization circuits are included to precharge and equalize the LIO signal lines between memory access operations. During precharge periods, a precharge control signal LIOPC is preferably at a logical high voltage level for a predetermined period of time between memory access operations, thereby forming a fixed-width pulse and raising the LIO signals to a known precharge level. The LIO signal lines are charged to a known level equal to the standby voltage level plus a voltage V(t) during the precharge and equalization period. The voltage V(t) is dependent on the duration of the fixed-width pulse of the precharge control signal LIOPC.

REFERENCES:
patent: 5297089 (1994-03-01), Wong
patent: 5485426 (1996-01-01), Lee et al.
patent: 5696722 (1997-12-01), Yamauchi
patent: 5812473 (1998-09-01), Tsai
patent: 5877990 (1999-03-01), Kim
patent: 5995431 (1999-11-01), Inui et al.
patent: 6011738 (2000-01-01), Son et al.

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