Static information storage and retrieval – Powering
Patent
1985-05-30
1987-09-01
Popek, Joseph A.
Static information storage and retrieval
Powering
365227, 307296A, G11C 700
Patent
active
046913041
ABSTRACT:
This invention relates to a semiconductor device formed on a semiconductor chip which is provided with at least a voltage transformation arrangement for transforming an external power supply voltage into an internal power supply voltage. At least a portion of circuits formed in the chip operate by using the internal power supply voltage rather than the external power supply voltage. Semiconductor devices, in particular DRAMs (dynamic random access memories), in which said internal power supply voltage is supplied are controlled so that the starting time of the internal power supply voltage at the moment of the switch-on of the external power supply is later than the starting time of the external power supply voltage, and/or the time necessary for the internal power supply voltage to increase to a predetermined operational level at said moment is longer than that required for said external power supply voltage to increase to a predetermined operational level.
REFERENCES:
patent: 4233672 (1980-11-01), Suzuki et al.
patent: 4409678 (1983-10-01), Takemae et al.
patent: 4455628 (1984-06-01), Ozaki et al.
Hori Ryoichi
Itoh Kiyoo
Hitachi , Ltd.
Popek Joseph A.
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