JPS6446296A - Programmable read only memory - Google Patents
Programmable read only memoryInfo
- 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
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.
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6271100A (en) * | 1985-09-24 | 1987-04-01 | Hitachi Ltd | Semiconductor integrated circuit device |
-
1987
- 1987-08-14 JP JP62202744A patent/JPS6446296A/en active Pending
Patent Citations (1)
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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