Static information storage and retrieval – Read/write circuit – Precharge
Patent
1998-07-14
2000-04-04
Fears, Terrell W.
Static information storage and retrieval
Read/write circuit
Precharge
36518901, 36523001, G11C 1300
Patent
active
06046948&
ABSTRACT:
A precharge circuit is operable during a standby mode to drive a word line to a low voltage level and one or more (pairs of) bit lines to a standby voltage level. The precharge circuit comprises a driver for driving the on or more bit lines to the stand by voltage level. The precharge circuit also includes a control circuit connected to a control input of the driver which control circuit receives the standby signal. The control circuit outputs a varying enable signal to the driver for varying the drive of the bit lines by the driver. The precharge circuit can include a first current limiting driver for driving the bit lines to the standby voltage level, and second driver, for driving the bit lines to the standby voltage level. The second driver has a greater switching speed, and a higher current driving capacity, than the first current limiting driver. Tie control circuit enables the second driver for a certain period of time in response to detecting an indication of a beginning of the standby mode of the standby signal.
REFERENCES:
patent: 5661417 (1997-08-01), Kondoh
Su Yuan-Mou
Zheng Hua
Fears Terrell W.
Winbond Electronics Corporation America
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