IT1320408B1 - Cella di memoria rom non decodificabile mediante ispezione visiva. - Google Patents

Cella di memoria rom non decodificabile mediante ispezione visiva.

Info

Publication number
IT1320408B1
IT1320408B1 IT2000TO000543A ITTO20000543A IT1320408B1 IT 1320408 B1 IT1320408 B1 IT 1320408B1 IT 2000TO000543 A IT2000TO000543 A IT 2000TO000543A IT TO20000543 A ITTO20000543 A IT TO20000543A IT 1320408 B1 IT1320408 B1 IT 1320408B1
Authority
IT
Italy
Prior art keywords
decodable
memory cell
visual inspection
rom memory
rom
Prior art date
Application number
IT2000TO000543A
Other languages
English (en)
Inventor
Raffaele Zambrano
Original Assignee
St Microelectronics Srl
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by St Microelectronics Srl filed Critical St Microelectronics Srl
Priority to IT2000TO000543A priority Critical patent/IT1320408B1/it
Publication of ITTO20000543A0 publication Critical patent/ITTO20000543A0/it
Priority to US09/875,448 priority patent/US6420765B1/en
Publication of ITTO20000543A1 publication Critical patent/ITTO20000543A1/it
Application granted granted Critical
Publication of IT1320408B1 publication Critical patent/IT1320408B1/it

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11C—STATIC STORES
    • G11C17/00—Read-only memories programmable only once; Semi-permanent stores, e.g. manually-replaceable information cards
    • G11C17/08—Read-only memories programmable only once; Semi-permanent stores, e.g. manually-replaceable information cards using semiconductor devices, e.g. bipolar elements
    • G11C17/10—Read-only memories programmable only once; Semi-permanent stores, e.g. manually-replaceable information cards using semiconductor devices, e.g. bipolar elements in which contents are determined during manufacturing by a predetermined arrangement of coupling elements, e.g. mask-programmable ROM
    • G11C17/12—Read-only memories programmable only once; Semi-permanent stores, e.g. manually-replaceable information cards using semiconductor devices, e.g. bipolar elements in which contents are determined during manufacturing by a predetermined arrangement of coupling elements, e.g. mask-programmable ROM using field-effect devices
IT2000TO000543A 2000-06-06 2000-06-06 Cella di memoria rom non decodificabile mediante ispezione visiva. IT1320408B1 (it)

Priority Applications (2)

Application Number Priority Date Filing Date Title
IT2000TO000543A IT1320408B1 (it) 2000-06-06 2000-06-06 Cella di memoria rom non decodificabile mediante ispezione visiva.
US09/875,448 US6420765B1 (en) 2000-06-06 2001-06-05 ROM memory cell not decodable by visual inspection

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT2000TO000543A IT1320408B1 (it) 2000-06-06 2000-06-06 Cella di memoria rom non decodificabile mediante ispezione visiva.

Publications (3)

Publication Number Publication Date
ITTO20000543A0 ITTO20000543A0 (it) 2000-06-06
ITTO20000543A1 ITTO20000543A1 (it) 2001-12-06
IT1320408B1 true IT1320408B1 (it) 2003-11-26

Family

ID=11457796

Family Applications (1)

Application Number Title Priority Date Filing Date
IT2000TO000543A IT1320408B1 (it) 2000-06-06 2000-06-06 Cella di memoria rom non decodificabile mediante ispezione visiva.

Country Status (2)

Country Link
US (1) US6420765B1 (it)
IT (1) IT1320408B1 (it)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7085149B2 (en) * 2004-01-23 2006-08-01 Agere Systems Inc. Method and apparatus for reducing leakage current in a read only memory device using transistor bias
CN103022040B (zh) * 2011-09-28 2015-12-02 无锡华润上华科技有限公司 只读存储器及其制作方法

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR0135798B1 (ko) * 1994-08-17 1998-04-24 김광호 전류증폭형 마스크-롬
US6084275A (en) * 1998-05-04 2000-07-04 Texas Instruments - Acer Incorporated Double coding mask read only memory (mask ROM) for minimizing band-to-band leakage

Also Published As

Publication number Publication date
ITTO20000543A0 (it) 2000-06-06
ITTO20000543A1 (it) 2001-12-06
US20020034106A1 (en) 2002-03-21
US6420765B1 (en) 2002-07-16

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