Static information storage and retrieval – Powering
Patent
1990-07-31
1993-06-15
Popek, Joseph A.
Static information storage and retrieval
Powering
3072962, 36518909, G11C 700, H03K 301
Patent
active
052205347
ABSTRACT:
A circuit for providing a bias to the substrate of a dynamic memory device having a memory array and peripheral circuitry formed in a semiconductor substrate is disclosed. The circuit includes a low power pump and oscillator to provide a substrate bias in a memory standby mode. A high power pump and oscillator is included to provide a substrate bias when the memory is active. A booster oscillator and pump to provide a substrate bias when the memory is active and when the substrate voltage level is greater than a preset level is also provided. A method for contolling the voltage level of the substrate upon which a dynamic memory device is formed is also disclosed.
REFERENCES:
patent: 4883976 (1989-11-01), Deone
Cline Danny R.
Iyengar Narasimhan
Loh Wah K.
McAdams Hugh P.
Bassuk Lawrence J.
Donaldson Richard L.
Holland Robby T.
Popek Joseph A.
Texas Instruments Incorporated
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