Static information storage and retrieval – Addressing – Particular decoder or driver circuit
Patent
1991-05-08
1994-06-07
Callahan, Timothy P.
Static information storage and retrieval
Addressing
Particular decoder or driver circuit
365900, 36518911, 307475, 307578, G11C 800, G11C 700
Patent
active
053196040
ABSTRACT:
Circuitry and a method are provided for selectively switching a negative voltage (-V.sub.nn) to portions of CMOS integrated circuits, which circuitry comprises a switching/decoding matrix. The switching/decoding matrix comprises a control and decode logic (CDL) which controls signal VPPENABLE to control a positive charge pump (PCP) producing positive voltage (+V.sub.pp) and which further controls signal VNNENABLE to control a negative charge pump (NCP) producing said negative voltage (-V.sub.nn). The switching/decoding matrix further comprises, for each line to be switched, a switching module which comprises a PMOS transistor (PS) having its source connected to said line and its drain connected to receive said negative voltage (-V.sub.nn) produced by said negative charge pump (NCP). The PMOS transistor (PS) gate is driven by a drive circuit being in turn driven by said control and decode logic (CDL) and connected so as to receive the positive voltage (+V.sub.pp) provided by said positive charge pump (PCP).
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Imondi Giuliano
Marotta Giulio
Porrovecchio Giulio
Savarese Giuseppe
Callahan Timothy P.
Donaldson Richard
Eschweiler Thomas G.
Kesterson James C.
Texas Instruments Incorporated
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