JPS56137580A - Semiconductor storage device - Google Patents
Semiconductor storage deviceInfo
- Publication number
- JPS56137580A JPS56137580A JP3837280A JP3837280A JPS56137580A JP S56137580 A JPS56137580 A JP S56137580A JP 3837280 A JP3837280 A JP 3837280A JP 3837280 A JP3837280 A JP 3837280A JP S56137580 A JPS56137580 A JP S56137580A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- write
- data
- changed
- shot
- 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
- G11C7/00—Arrangements for writing information into, or reading information out from, a digital store
- G11C7/24—Memory cell safety or protection circuits, e.g. arrangements for preventing inadvertent reading or writing; Status cells; Test cells
Landscapes
- Static Random-Access Memory (AREA)
Abstract
PURPOSE:To prevent mis-write-in to a nonselection cell, by making the required minimum period into an internal write cycle, independently of an external write cycle. CONSTITUTION:The external write-in signal WE is fed to the one shot WE generating circuit 11 and inverter 12, and the external write-in data signal DIN is fed to the data generating circuit 13 and the one shot data generating circuit 14. Further, when the logic level of the signal WE is changed for a given period, an output is obtained in the circuit 11, one shot signal is generated only at the output of the gate 19 into write-in state of data ''1''. When the logic level of the signal DIN is changed at the next period without signal WE change, the output state of the gate 19 is changed to obtain the write-state of data ''0''.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3837280A JPS56137580A (en) | 1980-03-26 | 1980-03-26 | Semiconductor storage device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3837280A JPS56137580A (en) | 1980-03-26 | 1980-03-26 | Semiconductor storage device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS56137580A true JPS56137580A (en) | 1981-10-27 |
| JPS6117077B2 JPS6117077B2 (en) | 1986-05-06 |
Family
ID=12523445
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3837280A Granted JPS56137580A (en) | 1980-03-26 | 1980-03-26 | Semiconductor storage device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS56137580A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61142590A (en) * | 1984-12-14 | 1986-06-30 | Hitachi Ltd | Semiconductor memory device |
| JPH01241089A (en) * | 1988-03-23 | 1989-09-26 | Toshiba Corp | Static type random access memory |
| JPH01251496A (en) * | 1988-03-31 | 1989-10-06 | Toshiba Corp | Static type random access memory |
| WO2012117524A1 (en) * | 2011-03-01 | 2012-09-07 | 富士通株式会社 | Memory circuit |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0377789U (en) * | 1989-11-30 | 1991-08-06 |
-
1980
- 1980-03-26 JP JP3837280A patent/JPS56137580A/en active Granted
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61142590A (en) * | 1984-12-14 | 1986-06-30 | Hitachi Ltd | Semiconductor memory device |
| JPH01241089A (en) * | 1988-03-23 | 1989-09-26 | Toshiba Corp | Static type random access memory |
| JPH01251496A (en) * | 1988-03-31 | 1989-10-06 | Toshiba Corp | Static type random access memory |
| WO2012117524A1 (en) * | 2011-03-01 | 2012-09-07 | 富士通株式会社 | Memory circuit |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6117077B2 (en) | 1986-05-06 |
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