US4754432A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nonvolatile multiconfigurable circuit
Assignee: MagnaChip Semiconductor Ltd
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Filing: 1986-07-25
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Granted: 1988-06-28
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Expires: 2006-07-25
Abstract
Abstract A multiconfigurable integrated circuit having volatile and nonvolatile segments configured and interconnected so that data can be nonvolatilely entered and transferred at high frequency in the volatile segment, so that formerly entered data can be nonvolatilely stored while new data is entered and volatiley utilized, and so that previously stored nonvolatile data can be recalled and volatilely utilized. In one form, the circuit is comprised of a shift register stage selectively connectable to a nonvolatile memory cell structure. Interconnection of multiple circuits and the addition of analog switches creates electronic equivalents of DIP switches and various other multiple pole selectively controlled switching configurations.
Inventors
- 👤 James A. Topich, deceased
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:52
CPC Classifications
G; G11; G11C; G11C14/00
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
92 words
A volatile/nonvolatile multiconfigurable integrated circuit comprising: a volatile shift register for storing binary state data and having data input, data output and clocking lines; means for nonvolatilely storing data representing a binary state from the volatile shift register, electronically connected to the volatile shift register and responsive to a selective program command; and means for setting the volatile shift register to a binary state from the means for nonvolatilely storing in response to a selective recall command, electronically connected both to the volatile shift register and to the means for nonvolatilely storing.
Claim 2
Dependent Claim
92 words
A volatile/nonvolatile multiconfigurable integrated circuit comprising: a volatile shift register for storing binary state data and having data input, data output and clocking lines; means for nonvolatilely storing data representing a binary state from the volatile shift register, electronically connected to the volatile shift register and responsive to a selective program command; and means for setting the volatile shift register to a binary state from the means for nonvolatilely storing in response to a selective recall command, electronically connected both to the volatile shift register and to the means for nonvolatilely storing.
Claim 3
Dependent Claim
25 words
The apparatus recited in claim 1, wherein the means for nonvolatilely storing is a field effect transistor device configured with a single polysilicon electrode layer.
Claim 4
Dependent Claim
27 words
The apparatus recited in claim 1, further including a means for generating as a part of the selective program command a time and voltage controlled programming signal.
Claim 5
Dependent Claim
15 words
The apparatus recited in claim 3, wherein the volatile shift register includes a set line.
Claim 6
Dependent Claim
34 words
The apparatus recited in claim 4, further including a means for generating as a part of the selective recall command a time preceding preconditioning signal on the set line of the volatile shift register.
Claim 7
Dependent Claim
36 words
The apparatus recited in claim 1, further including a switch means for selectively electrically connecting first and second lines thereof in response to the binary state at the data output line of the volatile shift register.
Claim 8
Dependent Claim
49 words
A serial connection of multiple volatile/nonvolatile multiconfigurable integrated circuits as defined in claim 1, having the date output connection of a preceding circuit connected to the data input connection of the next succeeding circuit and the clock connections of the circuits connected and responsive to a common clock signal.
Claim 9
Dependent Claim
20 words
The apparatus recited in claim 7, wherein the multiple circuits are connected to be responsive to a common program command.
Claim 10
Dependent Claim
20 words
The apparatus recited in claim 7, wherein the multiple circuits are connected to be responsive to a common recall command.
Claim 11
Dependent Claim
55 words
A serial connection of multiple volatile/nonvolatile multiconfigurable integrated circuits as defined in claim 1, having at least two circuits with the data output lines of the circuits feeding back to the corresponding circuit data input lines, and having the block lines of the circuits connected through logic gates and responsive to a common clock signal.
Claim 12
Dependent Claim
20 words
The apparatus recited in claim 10, wherein the multiple circuits are connected to be responsive to a common program command.
Claim 13
Dependent Claim
20 words
The apparatus recited in claim 10, wherein the multiple circuits are connected to be responsive to a command recall command.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-06-28 | 1991-12-28 | 1992-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-06-28 | 1995-12-28 | 1996-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-06-28 | 1999-12-28 | 2000-06-28 | $7700.00 | Window Closed / Lapsed |