JPS57164494A - Semiconductor device - Google Patents
Semiconductor deviceInfo
- Publication number
- JPS57164494A JPS57164494A JP4975581A JP4975581A JPS57164494A JP S57164494 A JPS57164494 A JP S57164494A JP 4975581 A JP4975581 A JP 4975581A JP 4975581 A JP4975581 A JP 4975581A JP S57164494 A JPS57164494 A JP S57164494A
- Authority
- JP
- Japan
- Prior art keywords
- terminal
- resistance
- diode
- digit
- line
- 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
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
- G11C17/06—Read-only memories programmable only once; Semi-permanent stores, e.g. manually-replaceable information cards using diode elements
Abstract
PURPOSE:To easily detect defects in pressure resistance of partial cells on a array, by connecting one end of each diode to digit lines, respectively, and by connecting in common the other end of each diode to the outside through a series body consisting of a Zener diode and a resistance. CONSTITUTION:A circuit block A in which each of collectors of diodes 42-45 and 46-49 betwen base and collector 42-45 and 46-49 having a common base is connected to each digit line through a resistance 40 and a Zener diode 41, is installed to a row line selecting input 25. Through this block A, a potential difference VS based on an impedance of a circuit to a row line which is selected at a low level by cells at intersecting points of row lines and digit lines on the first eight-digit line looking from a input terminal 25 and a driving circit 17, is found. At the actual detecting time, voltage drops are monitored at the open side of a precision resistance element RS, by connecting the element RS to the outside of the terminal 25, by impressing a constant voltage which is lower than VS upon the open terminal of the element RS, and by making binary inputs on input terminals 23 and 24. That is to say, when an abnormalty in pressure resistance occurs in a cell connected to a selected row line, an electric current is detected at the terminal 25.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4975581A JPS57164494A (en) | 1981-04-02 | 1981-04-02 | Semiconductor device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4975581A JPS57164494A (en) | 1981-04-02 | 1981-04-02 | Semiconductor device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57164494A true JPS57164494A (en) | 1982-10-09 |
| JPS6238800B2 JPS6238800B2 (en) | 1987-08-19 |
Family
ID=12839995
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4975581A Granted JPS57164494A (en) | 1981-04-02 | 1981-04-02 | Semiconductor device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57164494A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4730273A (en) * | 1986-04-03 | 1988-03-08 | Motorola, Inc. | On-chip programmability verification circuit for programmable read only memory having lateral fuses |
| US5412614A (en) * | 1991-08-16 | 1995-05-02 | U.S. Philips Corporation | Electronic matrix array devices and systems incorporating such devices |
-
1981
- 1981-04-02 JP JP4975581A patent/JPS57164494A/en active Granted
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4730273A (en) * | 1986-04-03 | 1988-03-08 | Motorola, Inc. | On-chip programmability verification circuit for programmable read only memory having lateral fuses |
| US5412614A (en) * | 1991-08-16 | 1995-05-02 | U.S. Philips Corporation | Electronic matrix array devices and systems incorporating such devices |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6238800B2 (en) | 1987-08-19 |
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