JPS56160049A - Mode change-over circuit - Google Patents

Mode change-over circuit

Info

Publication number
JPS56160049A
JPS56160049A JP6456780A JP6456780A JPS56160049A JP S56160049 A JPS56160049 A JP S56160049A JP 6456780 A JP6456780 A JP 6456780A JP 6456780 A JP6456780 A JP 6456780A JP S56160049 A JPS56160049 A JP S56160049A
Authority
JP
Japan
Prior art keywords
mode
terminal
output
over
change
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.)
Granted
Application number
JP6456780A
Other languages
Japanese (ja)
Other versions
JPH0330326B2 (en
Inventor
Osamu Nishijima
Makoto Yamatani
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP6456780A priority Critical patent/JPS56160049A/en
Publication of JPS56160049A publication Critical patent/JPS56160049A/en
Publication of JPH0330326B2 publication Critical patent/JPH0330326B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L22/00—Testing or measuring during manufacture or treatment; Reliability measurements, i.e. testing of parts without further processing to modify the parts as such; Structural arrangements therefor

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Engineering (AREA)
  • Testing Of Individual Semiconductor Devices (AREA)
  • Testing Or Measuring Of Semiconductors Or The Like (AREA)
  • Semiconductor Integrated Circuits (AREA)
  • Logic Circuits (AREA)

Abstract

PURPOSE:To perform integration without providing the terminal for inspection by a method wherein the output terminal having the characteristic of outputting a high level or low level of pulse in an operational mode at a fixed cycle is commonly used in performing the change-over of the inspection mode of LSI and the operational mode. CONSTITUTION:In the mode change-over circuit wherein the change-over is performed on the LSI inspection mode and the operational mode, the output of an AND gate 7 is turned out at low level to the output terminal 5 under the state of actual movement, and the Q output of the D flip-flops 2-4, consisting of a shift resistor 1, is also becomes low level. An OR gate is used, instead of AND gates 2 and 6, when there exists a high level or a fixed cycle of pulse is outputted, and an inverter is jointly used. Under the state of inspection mode, the level of the output terminal 5 is forcedly turned to the high level by the output control signal to be applied to a terminal 6. Through these procedures, the mode change-over is performed without providing an exclusive terminal to the LSI and this contributes for better integration.
JP6456780A 1980-05-14 1980-05-14 Mode change-over circuit Granted JPS56160049A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6456780A JPS56160049A (en) 1980-05-14 1980-05-14 Mode change-over circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6456780A JPS56160049A (en) 1980-05-14 1980-05-14 Mode change-over circuit

Publications (2)

Publication Number Publication Date
JPS56160049A true JPS56160049A (en) 1981-12-09
JPH0330326B2 JPH0330326B2 (en) 1991-04-30

Family

ID=13261930

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6456780A Granted JPS56160049A (en) 1980-05-14 1980-05-14 Mode change-over circuit

Country Status (1)

Country Link
JP (1) JPS56160049A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58207648A (en) * 1982-05-28 1983-12-03 Toshiba Corp Setting circuit for test mode of integrated circuit
JPS58194348U (en) * 1982-06-15 1983-12-24 シャープ株式会社 Combustor combustion tube
JPS61287315A (en) * 1985-06-13 1986-12-17 Mitsubishi Electric Corp Semiconductor integrated circuit

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58207648A (en) * 1982-05-28 1983-12-03 Toshiba Corp Setting circuit for test mode of integrated circuit
JPS638612B2 (en) * 1982-05-28 1988-02-23 Tokyo Shibaura Electric Co
JPS58194348U (en) * 1982-06-15 1983-12-24 シャープ株式会社 Combustor combustion tube
JPS61287315A (en) * 1985-06-13 1986-12-17 Mitsubishi Electric Corp Semiconductor integrated circuit
JPH0581056B2 (en) * 1985-06-13 1993-11-11 Mitsubishi Electric Corp

Also Published As

Publication number Publication date
JPH0330326B2 (en) 1991-04-30

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