US4503339A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Semiconductor integrated circuit device having a substrate voltage generating circuit
Assignee: Fujitsu Ltd
•
Filing: 1982-05-05
•
Granted: 1985-03-05
•
Expires: 2002-05-05
Abstract
Abstract A semiconductor device comprising a substrate voltage-generating circuit which has an oscillating circuit and a pumping circuit. The substrate voltage-generating circuit also has a control circuit for controlling the application of the output signal of the oscillating circuit to the pumping circuit and a terminal electrode for receiving an external signal to control the control circuit and to stop the application of the output signal of the oscillating circuit to the pumping circuit.
Inventors
- 👤 Norihisa Tsuge
- 👤 Tomio Nakano
- 👤 Masao Nakano
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 02:27
CPC Classifications
G; G05; G05F; G05F3/00; G05F3/02; G05F3/08; G05F3/10; G05F3/16; G05F3/20; G05F3/205
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
127 words
A semiconductor device, operatively connected to receive an external signal, having a semiconductor substrate, comprising: a substrate voltage-generating circuit comprising: an oscillating circuit, operatively connected to said substrate voltage generating circuit, for generating an output signal; a pumping circuit, operatively connected to said oscillating circuit, operating in response to said output signal of said oscillating circuit and applying a predetermined substrate bias voltage to the semiconductor substrate; a terminal electrode for receiving the external signal; and a control circuit, operatively connected between said terminal electrode and said oscillating circuit, for stopping the application of said output signal from said oscillating circuit to said pumping circuit upon receipt of the external signal, said pumping circuit stopping the application of said predetermined substrate bias voltage to the semiconductor substrate.
Claim 2
Dependent Claim
127 words
A semiconductor device, operatively connected to receive an external signal, having a semiconductor substrate, comprising: a substrate voltage-generating circuit comprising: an oscillating circuit, operatively connected to said substrate voltage generating circuit, for generating an output signal; a pumping circuit, operatively connected to said oscillating circuit, operating in response to said output signal of said oscillating circuit and applying a predetermined substrate bias voltage to the semiconductor substrate; a terminal electrode for receiving the external signal; and a control circuit, operatively connected between said terminal electrode and said oscillating circuit, for stopping the application of said output signal from said oscillating circuit to said pumping circuit upon receipt of the external signal, said pumping circuit stopping the application of said predetermined substrate bias voltage to the semiconductor substrate.
Claim 3
Dependent Claim
43 words
A semiconductor device as claimed in claim 1, wherein said oscillating circuit comprises: an output stage circuit operatively connected to said pumping circuit; a waveform shaping circuit operatively connected to said output stage; and; an oscillator operatively connected to said waveform shaping circuit.
Claim 4
Dependent Claim
23 words
A semiconductor device as claimed in claim 2, wherein said control circuit is incorporated into said waveform shaping circuit of said oscillating circuit.
Claim 5
Dependent Claim
22 words
A semiconductor device as claimed in claim 2, wherein said control circuit is incorporated into said output-stage circuit of said oscillating circuit.
Claim 6
Dependent Claim
35 words
A semiconductor device as claimed in claim 2, wherein said oscillator of said oscillating circuit is a ring oscillator with multi-stages, and wherein said control circuit is incorporated into one stage of said ring oscillator.
Claim 7
Dependent Claim
44 words
A device as claimed in claim 1 wherein said pumping circuit comprises: a first transistor; a second transistor operatively connected to said first transistor; and a capacitor, operatively connected to said first and second transistor and to said output stage of said oscillating circuit.
Claim 8
Dependent Claim
42 words
A device as claimed in claim 1, wherein said control circuit comprises: a thrid transistor operatively connected in series with said waveform shaping circuit and to said terminal electrode; and a resistor operatively connected to said third transistor and said terminal electrode.
Claim 9
Dependent Claim
28 words
A device as claimed in claim 7, wherein said output stage comprises a fourth and fifth transistor connected in series with said third transistor of said control circuit.
Claim 10
Dependent Claim
25 words
A device as claimed in claim 7 wherein said oscillating circuit comprises a ring oscillator operatively connected to said third transistor of said control circuit.
References Cited (Backward Citations)
US3750018A
Cited
US3806741A
Cited
US4115710A
Cited
US4142114A
Cited
US4229667A
Cited
US4388537A
Cited
US4382229A
Cited
US4435652A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-03-04 | 1988-09-03 | 1989-03-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-03-04 | 1992-09-03 | 1993-03-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-03-04 | 1996-09-03 | 1997-03-05 | $7700.00 | Window Closed / Lapsed |