DE68918032T2 - UV-löschbarer EPROM mit redundanter Schaltung. - Google Patents
UV-löschbarer EPROM mit redundanter Schaltung.Info
- Publication number
- DE68918032T2 DE68918032T2 DE68918032T DE68918032T DE68918032T2 DE 68918032 T2 DE68918032 T2 DE 68918032T2 DE 68918032 T DE68918032 T DE 68918032T DE 68918032 T DE68918032 T DE 68918032T DE 68918032 T2 DE68918032 T2 DE 68918032T2
- Authority
- DE
- Germany
- Prior art keywords
- redundant circuit
- erasable eprom
- eprom
- erasable
- redundant
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices adapted for rectifying, amplifying, oscillating or switching, or capacitors or resistors with at least one potential-jump barrier or surface barrier, e.g. PN junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/66—Types of semiconductor device ; Multistep manufacturing processes therefor
- H01L29/68—Types of semiconductor device ; Multistep manufacturing processes therefor controllable by only the electric current supplied, or only the electric potential applied, to an electrode which does not carry the current to be rectified, amplified or switched
- H01L29/76—Unipolar devices, e.g. field effect transistors
- H01L29/772—Field effect transistors
- H01L29/78—Field effect transistors with field effect produced by an insulated gate
- H01L29/788—Field effect transistors with field effect produced by an insulated gate with floating gate
- H01L29/7881—Programmable transistors with only two possible levels of programmation
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10B—ELECTRONIC MEMORY DEVICES
- H10B69/00—Erasable-and-programmable ROM [EPROM] devices not provided for in groups H10B41/00 - H10B63/00, e.g. ultraviolet erasable-and-programmable ROM [UVEPROM] devices
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP63239215A JPH0777239B2 (ja) | 1988-09-22 | 1988-09-22 | 浮遊ゲート型不揮発性半導体記憶装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
DE68918032D1 DE68918032D1 (de) | 1994-10-13 |
DE68918032T2 true DE68918032T2 (de) | 1995-05-04 |
Family
ID=17041457
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE68918032T Expired - Fee Related DE68918032T2 (de) | 1988-09-22 | 1989-09-22 | UV-löschbarer EPROM mit redundanter Schaltung. |
Country Status (4)
Country | Link |
---|---|
US (1) | US5070378A (de) |
EP (1) | EP0360288B1 (de) |
JP (1) | JPH0777239B2 (de) |
DE (1) | DE68918032T2 (de) |
Families Citing this family (24)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5523968A (en) * | 1988-05-07 | 1996-06-04 | Seiko Epson Corporation | IC semiconductor memory devices with maintained stable operation and lower operating current characteristics |
KR950011026B1 (ko) * | 1990-06-28 | 1995-09-27 | 가시오 게이상기 가부시끼가이샤 | 박막 메모리셀 |
US5311462A (en) * | 1991-12-19 | 1994-05-10 | Intel Corporation | Physical placement of content addressable memories |
DE69333881T2 (de) * | 1992-07-31 | 2006-07-13 | Hughes Electronics Corp., El Segundo | Sicherheitssystem für eine integrierte Schaltung und Verfahren mit implantierten Verbindungen |
US5783846A (en) * | 1995-09-22 | 1998-07-21 | Hughes Electronics Corporation | Digital circuit with transistor geometry and channel stops providing camouflage against reverse engineering |
JP2980012B2 (ja) * | 1995-10-16 | 1999-11-22 | 日本電気株式会社 | 不揮発性半導体記憶装置 |
JP3001454B2 (ja) * | 1997-04-23 | 2000-01-24 | 日本電気アイシーマイコンシステム株式会社 | 半導体装置 |
US5973375A (en) * | 1997-06-06 | 1999-10-26 | Hughes Electronics Corporation | Camouflaged circuit structure with step implants |
US6091652A (en) * | 1998-12-11 | 2000-07-18 | Lsi Logic Corporation | Testing semiconductor devices for data retention |
US6396368B1 (en) | 1999-11-10 | 2002-05-28 | Hrl Laboratories, Llc | CMOS-compatible MEM switches and method of making |
US7217977B2 (en) | 2004-04-19 | 2007-05-15 | Hrl Laboratories, Llc | Covert transformation of transistor properties as a circuit protection method |
US6815816B1 (en) | 2000-10-25 | 2004-11-09 | Hrl Laboratories, Llc | Implanted hidden interconnections in a semiconductor device for preventing reverse engineering |
US7294935B2 (en) * | 2001-01-24 | 2007-11-13 | Hrl Laboratories, Llc | Integrated circuits protected against reverse engineering and method for fabricating the same using an apparent metal contact line terminating on field oxide |
US6791191B2 (en) | 2001-01-24 | 2004-09-14 | Hrl Laboratories, Llc | Integrated circuits protected against reverse engineering and method for fabricating the same using vias without metal terminations |
US6740942B2 (en) | 2001-06-15 | 2004-05-25 | Hrl Laboratories, Llc. | Permanently on transistor implemented using a double polysilicon layer CMOS process with buried contact |
US6774413B2 (en) * | 2001-06-15 | 2004-08-10 | Hrl Laboratories, Llc | Integrated circuit structure with programmable connector/isolator |
TW507369B (en) * | 2001-10-29 | 2002-10-21 | Macronix Int Co Ltd | Silicon nitride read only memory structure for preventing antenna effect |
US6744117B2 (en) * | 2002-02-28 | 2004-06-01 | Motorola, Inc. | High frequency semiconductor device and method of manufacture |
US6897535B2 (en) | 2002-05-14 | 2005-05-24 | Hrl Laboratories, Llc | Integrated circuit with reverse engineering protection |
US7049667B2 (en) | 2002-09-27 | 2006-05-23 | Hrl Laboratories, Llc | Conductive channel pseudo block process and circuit to inhibit reverse engineering |
US6979606B2 (en) | 2002-11-22 | 2005-12-27 | Hrl Laboratories, Llc | Use of silicon block process step to camouflage a false transistor |
JP4846239B2 (ja) | 2002-12-13 | 2011-12-28 | エイチアールエル ラボラトリーズ,エルエルシー | ウェル注入を用いた集積回路の改変 |
US7242063B1 (en) | 2004-06-29 | 2007-07-10 | Hrl Laboratories, Llc | Symmetric non-intrusive and covert technique to render a transistor permanently non-operable |
US8168487B2 (en) | 2006-09-28 | 2012-05-01 | Hrl Laboratories, Llc | Programmable connection and isolation of active regions in an integrated circuit using ambiguous features to confuse a reverse engineer |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58197777A (ja) * | 1982-05-12 | 1983-11-17 | Mitsubishi Electric Corp | 半導体不揮発性記憶装置 |
JPS616868A (ja) * | 1984-06-20 | 1986-01-13 | Nec Corp | Mis型電界効果半導体装置 |
JPS6149475A (ja) * | 1984-08-17 | 1986-03-11 | Matsushita Electronics Corp | 紫外線照射型半導体装置 |
JPS6236869A (ja) * | 1985-08-12 | 1987-02-17 | Toshiba Corp | 不揮発性半導体記憶装置 |
US4805138A (en) * | 1985-08-23 | 1989-02-14 | Texas Instruments Incorporated | An unerasable eprom cell |
JPS62143476A (ja) * | 1985-12-18 | 1987-06-26 | Fujitsu Ltd | 半導体記憶装置 |
US4758869A (en) * | 1986-08-29 | 1988-07-19 | Waferscale Integration, Inc. | Nonvolatile floating gate transistor structure |
JPH061840B2 (ja) * | 1987-07-08 | 1994-01-05 | 日本電気株式会社 | 光遮へい型uprom |
-
1988
- 1988-09-22 JP JP63239215A patent/JPH0777239B2/ja not_active Expired - Fee Related
-
1989
- 1989-09-22 EP EP89117585A patent/EP0360288B1/de not_active Expired - Lifetime
- 1989-09-22 DE DE68918032T patent/DE68918032T2/de not_active Expired - Fee Related
-
1991
- 1991-03-28 US US07/679,146 patent/US5070378A/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
EP0360288A2 (de) | 1990-03-28 |
US5070378A (en) | 1991-12-03 |
JPH0287577A (ja) | 1990-03-28 |
JPH0777239B2 (ja) | 1995-08-16 |
DE68918032D1 (de) | 1994-10-13 |
EP0360288B1 (de) | 1994-09-07 |
EP0360288A3 (en) | 1990-10-31 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition | ||
8339 | Ceased/non-payment of the annual fee |