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JPS6469124A - Decoder circuit - Google Patents

Decoder circuit

Info

Publication number
JPS6469124A
JPS6469124A JP62227611A JP22761187A JPS6469124A JP S6469124 A JPS6469124 A JP S6469124A JP 62227611 A JP62227611 A JP 62227611A JP 22761187 A JP22761187 A JP 22761187A JP S6469124 A JPS6469124 A JP S6469124A
Authority
JP
Japan
Prior art keywords
signal line
circuit
nch
sense amplifier
output
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
JP62227611A
Other languages
Japanese (ja)
Other versions
JPH0691469B2 (en
Inventor
Hideo Abe
Ikutaro Wakao
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.)
NEC Corp
Original Assignee
NEC Corp
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 NEC Corp filed Critical NEC Corp
Priority to JP62227611A priority Critical patent/JPH0691469B2/en
Publication of JPS6469124A publication Critical patent/JPS6469124A/en
Publication of JPH0691469B2 publication Critical patent/JPH0691469B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Landscapes

  • Static Random-Access Memory (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • For Increasing The Reliability Of Semiconductor Memories (AREA)
  • Dram (AREA)

Abstract

PURPOSE:To facilitate the detection of an input fault of a decoder circuit by adding a circuit applying abnormality discrimination depending on a current sensing between a test signal line and a reference signal line. CONSTITUTION:The titled circuit consists of a test signal line 490 connecting to N-channel transistors(NCH-TR) 405.415...475 turned on when outputs of inverters 400.410...470 go to '1', NCH-TR 800-807, a reference signal line 890 connected to the NCH-TRs 800-807, a known current sense amplifier (sense amplifier) 700 sensing a current flowing to the test signal line 490 and the reference signal line 890, an output signal line 900 of the sense amplifier 700, a power supply line 600 of each circuit and a ground line 650. The impedance between the circuit connected with plural TRs in parallel and the reference circuit is compared to output a comparison signal. Thus, a fault of the decoder output is detected easily.
JP62227611A 1987-09-10 1987-09-10 Decoder circuit Expired - Fee Related JPH0691469B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62227611A JPH0691469B2 (en) 1987-09-10 1987-09-10 Decoder circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62227611A JPH0691469B2 (en) 1987-09-10 1987-09-10 Decoder circuit

Publications (2)

Publication Number Publication Date
JPS6469124A true JPS6469124A (en) 1989-03-15
JPH0691469B2 JPH0691469B2 (en) 1994-11-14

Family

ID=16863649

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62227611A Expired - Fee Related JPH0691469B2 (en) 1987-09-10 1987-09-10 Decoder circuit

Country Status (1)

Country Link
JP (1) JPH0691469B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2554378B2 (en) * 1988-01-27 1996-11-13 沖電気工業株式会社 Microcomputer and test method thereof
JP2015118728A (en) * 2013-12-18 2015-06-25 インフィネオン テクノロジーズ アクチエンゲゼルシャフトＩｎｆｉｎｅｏｎ Ｔｅｃｈｎｏｌｏｇｉｅｓ ＡＧ Word line address scan

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2554378B2 (en) * 1988-01-27 1996-11-13 沖電気工業株式会社 Microcomputer and test method thereof
JP2015118728A (en) * 2013-12-18 2015-06-25 インフィネオン テクノロジーズ アクチエンゲゼルシャフトＩｎｆｉｎｅｏｎ Ｔｅｃｈｎｏｌｏｇｉｅｓ ＡＧ Word line address scan

Also Published As

Publication number Publication date
JPH0691469B2 (en) 1994-11-14

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Legal Events

Date Code Title Description
LAPS Cancellation because of no payment of annual fees