JPS5736497A - Semiconductor integrated circuit - Google Patents

Semiconductor integrated circuit

Info

Publication number
JPS5736497A
JPS5736497A JP11206780A JP11206780A JPS5736497A JP S5736497 A JPS5736497 A JP S5736497A JP 11206780 A JP11206780 A JP 11206780A JP 11206780 A JP11206780 A JP 11206780A JP S5736497 A JPS5736497 A JP S5736497A
Authority
JP
Japan
Prior art keywords
content
rom
circuit
identification
integrated circuit
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.)
Pending
Application number
JP11206780A
Other languages
Japanese (ja)
Inventor
Sakae Takei
Hitoshi Sato
Masayuki Ishibashi
Takahide Kawano
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co Ltd
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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP11206780A priority Critical patent/JPS5736497A/en
Publication of JPS5736497A publication Critical patent/JPS5736497A/en
Pending legal-status Critical Current

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

Landscapes

  • Semiconductor Memories (AREA)
  • For Increasing The Reliability Of Semiconductor Memories (AREA)
  • Read Only Memory (AREA)

Abstract

PURPOSE:To simplify the identification of the content of a ROM, by providing an identifying circuit written with a code number corresponding to the content of ROM on the same substrate formed with ROMs. CONSTITUTION:An identifying circuit 11 is formed on the same substrate as the semiconductor substrate formed with ROMs, and a specific number out of a series of numbers 1-32, for example, according to the ROM write-in content. The area of contacts 0-5 of the circuit 11 has the size to which the probe can touch for identification check. When the content of ROM is desired to be read out, an external power supply E, load resistor R and a decoder 12 are connected to the contacts 0-5. The content of ROM can be identified by checking this identification circuit.
JP11206780A 1980-08-14 1980-08-14 Semiconductor integrated circuit Pending JPS5736497A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11206780A JPS5736497A (en) 1980-08-14 1980-08-14 Semiconductor integrated circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11206780A JPS5736497A (en) 1980-08-14 1980-08-14 Semiconductor integrated circuit

Publications (1)

Publication Number Publication Date
JPS5736497A true JPS5736497A (en) 1982-02-27

Family

ID=14577221

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11206780A Pending JPS5736497A (en) 1980-08-14 1980-08-14 Semiconductor integrated circuit

Country Status (1)

Country Link
JP (1) JPS5736497A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008052885A1 (en) * 2006-11-01 2008-05-08 International Business Machines Corporation Method of providing optimal field programming of electronic fuses

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008052885A1 (en) * 2006-11-01 2008-05-08 International Business Machines Corporation Method of providing optimal field programming of electronic fuses

Similar Documents

Publication Publication Date Title
JPS52101062A (en) Percentage indicator
SE8102962L (en) REGULATION FOR AN IC CHIP
DE69014328D1 (en) Semiconductor memory with mask ROM structure.
DE3689031D1 (en) Integrated semiconductor circuit with test circuit.
ES2030085T3 (en) INTEGRATED CIRCUIT FOR THE MEMORIZATION AND PROCESSING OF INFORMATION IN A CONFIDENTIAL WAY, INCLUDING AN ANTI-FRAUD DEVICE.
GB908225A (en) Maximum signal identifying circuit employing transistors
JPS5736497A (en) Semiconductor integrated circuit
JPS5613585A (en) Semiconductor memory circuit
US3071318A (en) Weighing scales
IE800980L (en) Testing
GB852755A (en) Improvements in or relating to board games
JPS549565A (en) Terminating circuit
GB1513624A (en) Key sensing circuit in a digital calculator
JPS55160394A (en) Rom writer
JPS5376627A (en) Multiple-unput keyboard circuit
JPS5745657A (en) Storage device
JPS54112176A (en) Selection method of semiconductor element
JPS5772341A (en) Semiconductor integrated circuit device
JPS5247349A (en) Statistical card reader circuit by setting terms
JPS6419404A (en) Module parts packing discriminating device
JPS57111768A (en) Voting ticket return device
JPS5785256A (en) Changing method for function of integrated circuit
JPS57122539A (en) Integrated circuit
JPS5313472A (en) Electronic timepiece
JPS5734257A (en) Integrated circuit device