JPS56111190A - Semiconductor memory device - Google Patents
Semiconductor memory deviceInfo
- Publication number
- JPS56111190A JPS56111190A JP1266080A JP1266080A JPS56111190A JP S56111190 A JPS56111190 A JP S56111190A JP 1266080 A JP1266080 A JP 1266080A JP 1266080 A JP1266080 A JP 1266080A JP S56111190 A JPS56111190 A JP S56111190A
- Authority
- JP
- Japan
- Prior art keywords
- mosfets
- column
- timing signal
- voltage
- ram1
- 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
- G11C7/22—Read-write [R-W] timing or clocking circuits; Read-write [R-W] control signal generators or management
Landscapes
- Read Only Memory (AREA)
Abstract
PURPOSE:To enable high capacity and high speed, by forming the information readout timing signal via the precharge means connected with a number of MOSFETs in comparison with the columns of ROMs. CONSTITUTION:The node N1 connected with the column of a selected RAM1 is precharged and the node N2 connected to the column which is connected with P type MOSFETs 13... many in number than the number of P type MOSFETs in response to sets of information connected to the column of RAM1, is similarly precharged. Then, the columns are connected to ground, the nodes N1, N2 are discharged and the voltage of clocked inverters 7, 15 is similarly increased. In this case, with the difference of the number of MOSFETs, the increase in the voltage is slow, and the inverter 15 reaches the threshold voltage after the inverter 7 reaches the threshold voltage, to develop the information readout timing signal phiL. Thus, due to the dispersion of threshold voltages, without considering the greater margin period, the specified timing signal is formed to increase the readout speed and the memory capacity.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP55012660A JPS603710B2 (en) | 1980-02-05 | 1980-02-05 | semiconductor storage device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP55012660A JPS603710B2 (en) | 1980-02-05 | 1980-02-05 | semiconductor storage device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS56111190A true JPS56111190A (en) | 1981-09-02 |
JPS603710B2 JPS603710B2 (en) | 1985-01-30 |
Family
ID=11811510
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP55012660A Expired JPS603710B2 (en) | 1980-02-05 | 1980-02-05 | semiconductor storage device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS603710B2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61126684A (en) * | 1984-11-26 | 1986-06-14 | Hitachi Ltd | Semiconductor integrating circuit with built-in memory |
JPS61180990A (en) * | 1985-10-25 | 1986-08-13 | Nec Corp | Semiconductor device |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62255303A (en) * | 1986-04-28 | 1987-11-07 | Juki Corp | Conveyor hanger |
US5848002A (en) * | 1994-12-27 | 1998-12-08 | Nkk Corporation | Information storage apparatus and method for operating the same |
-
1980
- 1980-02-05 JP JP55012660A patent/JPS603710B2/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61126684A (en) * | 1984-11-26 | 1986-06-14 | Hitachi Ltd | Semiconductor integrating circuit with built-in memory |
JPS61180990A (en) * | 1985-10-25 | 1986-08-13 | Nec Corp | Semiconductor device |
JPS6237471B2 (en) * | 1985-10-25 | 1987-08-12 | Nippon Electric Co |
Also Published As
Publication number | Publication date |
---|---|
JPS603710B2 (en) | 1985-01-30 |
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