US5055704A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Integrated circuit package with battery housing
Assignee: STMicroelectronics lnc USA
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Filing: 1989-08-04
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Granted: 1991-10-08
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Expires: 2009-08-04
Abstract
Abstract An integrated circuit, typically a random access memory, is housed in a package (14). In the application associated with the integrated circuit it is desired to maintain the data states stored in the memory even when the normal supply voltage is disconnected from the package (14). Batteries (24, 26) are secured in recesses (20, 22) within a structure (12) which is connected to the integrated circuit package (14). A top spring clip (100) is provided to securely hold the batteries (24, 26) within the recesses (20, 22) and forms a common conductor in contact with the upper terminal of both batteries. A bottom spring clip (74, 76) is provided for each of the recesses (20, 22) to form separate conductors in contact with the lower terminal of each battery. The batteries can be readily inserted and removed over lips (64, 70) in the recess (20, 22).
Inventors
- 👤 Joseph Link
- 👤 Michael L. Bolan
- 👤 Allen H. Brunk, Jr.
- 👤 Paul E. Schneikart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:25
CPC Classifications
H; H05; H05K; H05K5/00; H05K5/0091; G; G11; G11C; G11C5/00; G11C5/14; G11C5/141; H01; H01M; H01M50/00; H01M50/20; H01M50/204; H01M50/207; H01M50/216; H10; H10W; H10W70/00; H10W70/40; H10W70/474; H10W72/00; H10W72/50; H10W72/541; H10W72/5449; H10W90/00; H10W90/701; H10W90/751; H10W90/756; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
124 words
A nonvolatile memory, comprising: a volatile integrated circuit memory; a battery; a housing encapsulating and in contact with said volatile integrated circuit memory, said housing providing at least partial containment for said battery; a leadframe having a portion thereof enclosed within said housing, said leadframe having leads thereof extending from said housing for forming a set of dual in-line pins which receive primary power for supply to said volatile integrated circuit memory; and a switchover circuit positioned within said housing, said switchover circuit electrically connected to said battery and said volatile integrated circuit memory to provide power from said battery to said volatile integrated circuit memory when said primary power is not provided through said dual in-line pins to said volatile integrated circuit memory.
Claim 2
Dependent Claim
124 words
A nonvolatile memory, comprising: a volatile integrated circuit memory; a battery; a housing encapsulating and in contact with said volatile integrated circuit memory, said housing providing at least partial containment for said battery; a leadframe having a portion thereof enclosed within said housing, said leadframe having leads thereof extending from said housing for forming a set of dual in-line pins which receive primary power for supply to said volatile integrated circuit memory; and a switchover circuit positioned within said housing, said switchover circuit electrically connected to said battery and said volatile integrated circuit memory to provide power from said battery to said volatile integrated circuit memory when said primary power is not provided through said dual in-line pins to said volatile integrated circuit memory.
Claim 3
Dependent Claim
22 words
A nonvolatile memory as recited in claim 1 wherein said volatile integrated circuit memory and said switchover circuit are separate discrete devices.
Claim 4
Dependent Claim
30 words
A nonvolatile memory as recited in claim 1 wherein said switchover circuit is a diode electrically connected between said battery and a power terminal of said volatile integrated circuit memory.
Claim 5
Dependent Claim
21 words
A nonvolatile memory as recited in claim 1 wherein said switchover circuit prevents charging of said battery by said primary power.
Claim 6
Dependent Claim
24 words
A nonvolatile memory as recited in claim 1 wherein said volatile integrated circuit memory is positioned between said battery and said dual in-line pins.
Claim 7
Dependent Claim
24 words
A nonvolatile memory as recited in claim 1 wherein said switchover circuit is hermetically sealed in the same housing as said battery is contained.
Claim 8
Dependent Claim
17 words
A nonvolatile memory as recited in claim 6 wherein said switchover circuit is mounted to said leadframe.
Claim 9
Dependent Claim
142 words
A nonvolatile memory, comprising: a volatile integrated circuit memory; a battery; a housing encapsulating and in contact with said volatile integrated circuit memory, said housing providing containment for said battery; a leadframe having a portion thereof enclosed within said housing, said leadframe having leads thereof extending from said housing for forming a set of dual in-line pins which receive primary power for supply to said volatile integrated circuit memory; said battery having a disc shape and positioned in a plane offset from the plane of said volatile integrated circuit memory; and a switchover circuit positioned within said housing, said switchover circuit electrically connected to said battery and said volatile integrated circuit memory to provide power from said battery to said volatile integrated circuit memory when said primary power is not provided through said dual in-line pins to said volatile integrated circuit memory.
Claim 10
Dependent Claim
142 words
A nonvolatile memory, comprising: a volatile integrated circuit memory; a battery; a housing encapsulating and in contact with said volatile integrated circuit memory, said housing providing containment for said battery; a leadframe having a portion thereof enclosed within said housing, said leadframe having leads thereof extending from said housing for forming a set of dual in-line pins which receive primary power for supply to said volatile integrated circuit memory; said battery having a disc shape and positioned in a plane offset from the plane of said volatile integrated circuit memory; and a switchover circuit positioned within said housing, said switchover circuit electrically connected to said battery and said volatile integrated circuit memory to provide power from said battery to said volatile integrated circuit memory when said primary power is not provided through said dual in-line pins to said volatile integrated circuit memory.
Claim 11
Dependent Claim
22 words
A nonvolatile memory as recited in claim 8 wherein said volatile integrated circuit memory and said switchover circuit are separate discrete devices.
Claim 12
Dependent Claim
30 words
A nonvolatile memory as recited in claim 8 wherein said switchover circuit is a diode electrically connected between said battery and a power terminal of said volatile integrated circuit memory.
Claim 13
Dependent Claim
21 words
A nonvolatile memory as recited in claim 8 wherein said switchover circuit prevents charging of said battery by said primary power.
Claim 14
Dependent Claim
24 words
A nonvolatile memory as recited in claim 8 wherein said volatile integrated circuit memory is positioned between said battery and said dual in-line pins.
Claim 15
Dependent Claim
24 words
A nonvolatile memory as recited in claim 8, wherein said switchover circuit is hermetically sealed in the same housing as said battery is contained.
Claim 16
Dependent Claim
17 words
A nonvolatile memory as recited in claim 13, wherein said switchover circuit is mounted to said leadframe.
Claim 17
Dependent Claim
172 words
A dual-in-line nonvolatile memory package, comprising: at least one battery; an integrated circuit memory chip adapted for storing data in a volatile manner, said chip having leads extending therefrom for providing power and signal access to memory circuits of said chip; a leadframe having inner terminal ends converging to a central area, the leads of said chip being connected to the inner ends of said leadframe, said leadframe having outer terminal ends which are formable into a dual-in-line configuration; a switchover circuit responsive to the absence of external power coupled to said memory package for coupling power from said battery to the nonvolatile memory circuits; an encapsulant formed around and in contact with said memory chip and the inner terminals of said leadframe so as to provide a hermetic seal to said memory chip and said leadframe extending from said encapsulant, said encapsulant having a cavity for holding said batteries and for supporting battery conductors which contact said battery, said battery conductors being electrically connected to said memory chip via said leadframe.
Claim 18
Dependent Claim
172 words
A dual-in-line nonvolatile memory package, comprising: at least one battery; an integrated circuit memory chip adapted for storing data in a volatile manner, said chip having leads extending therefrom for providing power and signal access to memory circuits of said chip; a leadframe having inner terminal ends converging to a central area, the leads of said chip being connected to the inner ends of said leadframe, said leadframe having outer terminal ends which are formable into a dual-in-line configuration; a switchover circuit responsive to the absence of external power coupled to said memory package for coupling power from said battery to the nonvolatile memory circuits; an encapsulant formed around and in contact with said memory chip and the inner terminals of said leadframe so as to provide a hermetic seal to said memory chip and said leadframe extending from said encapsulant, said encapsulant having a cavity for holding said batteries and for supporting battery conductors which contact said battery, said battery conductors being electrically connected to said memory chip via said leadframe.
Claim 19
Dependent Claim
21 words
A nonvolatile memory package as recited in claim 15, wherein said battery conductors are supported by external surfaces of said encapsulant.
References Cited (Backward Citations)
US2782389A
Cited
US3289045A
Cited
US3634600A
Cited
US3575678A
Cited
GB1313718A
Cited
US3823388A
Cited
US4019174A
Cited
US3816768A
Cited
US3859638A
Cited
US4051945A
Cited
GB1520573A
Cited
GB1507036A
Cited
GB1549191A
Cited
US4079511A
Cited
GB1549307A
Cited
US4143417A
Cited
US4142287A
Cited
US4245877A
Cited
GB1554013A
Cited
US4122359A
Cited
DE2752385A1
Cited
US4107400A
Cited
US4143283A
Cited
US4251604A
Cited
US4457021A
Cited
US4223395A
Cited
US4247603A
Cited
US4232377A
Cited
US4288865A
Cited
US4326765A
Cited
US4351580A
Cited
US4430724A
Cited
US4443845A
Cited
US4383184A
Cited
US4503494A
Cited
US4516218A
Cited
US4451742A
Cited
JPH05266281A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-10-07 | 1995-04-08 | 1995-10-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-10-07 | 1999-04-08 | 1999-10-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-10-07 | 2003-04-08 | 2003-10-08 | $7700.00 | Window Closed / Lapsed |