JPS6446296A - Programmable read only memory - Google Patents

Programmable read only memory

Info

Publication number
JPS6446296A
JPS6446296A JP62202744A JP20274487A JPS6446296A JP S6446296 A JPS6446296 A JP S6446296A JP 62202744 A JP62202744 A JP 62202744A JP 20274487 A JP20274487 A JP 20274487A JP S6446296 A JPS6446296 A JP S6446296A
Authority
JP
Japan
Prior art keywords
vpp
become
detecting circuit
drain
detects
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
JP62202744A
Other languages
Japanese (ja)
Inventor
Akira Ban
Yutaka Hayashi
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
NEC IC Microcomputer Systems Co Ltd
Original Assignee
NEC Corp
NEC IC Microcomputer Systems 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 NEC Corp, NEC IC Microcomputer Systems Co Ltd filed Critical NEC Corp
Priority to JP62202744A priority Critical patent/JPS6446296A/en
Publication of JPS6446296A publication Critical patent/JPS6446296A/en
Pending legal-status Critical Current

Links

Landscapes

  • For Increasing The Reliability Of Semiconductor Memories (AREA)

Abstract

PURPOSE:To prevent the shipment of a defective item by setting a condition FD of the Vpp of a drain or a condition FC of the ground recording level of the drain to a storing cell. CONSTITUTION:When an FC is set, a Vpp is impressed to word lines 15-18, bit lines 11-14 become a ground potential, a Vpp detecting circuit 110 detects the Vpp of a word line 18 and the information is outputted to an output terminal 112. When an FD is set, the word lines 15-18 become a ground potential, the bit lines 11-14 become the Vpp, a Vpp detecting circuit 19 detects the Vpp of the bit line 14 and outputs the information to an output terminal 111. When the circuit is troubled, the Vpp detecting circuit does not operate. For that reason, it can be confirmed whether or not FC or FD conditions are actually set to memory cells Ia-Ip from the external part. Thus, the defectives article can surely be removed.
JP62202744A 1987-08-14 1987-08-14 Programmable read only memory Pending JPS6446296A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62202744A JPS6446296A (en) 1987-08-14 1987-08-14 Programmable read only memory

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62202744A JPS6446296A (en) 1987-08-14 1987-08-14 Programmable read only memory

Publications (1)

Publication Number Publication Date
JPS6446296A true JPS6446296A (en) 1989-02-20

Family

ID=16462442

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62202744A Pending JPS6446296A (en) 1987-08-14 1987-08-14 Programmable read only memory

Country Status (1)

Country Link
JP (1) JPS6446296A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6271100A (en) * 1985-09-24 1987-04-01 Hitachi Ltd Semiconductor integrated circuit device

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6271100A (en) * 1985-09-24 1987-04-01 Hitachi Ltd Semiconductor integrated circuit device

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