US4627031A
Expired / Lapsed
US
⏱️ 0.0 years remaining
CMOS memory arrangement
Assignee: STMicroelectronics lnc USA
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Filing: 1985-01-07
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Granted: 1986-12-02
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Expires: 2005-01-07
Abstract
Abstract CMOS memory arrangement including a circuit for setting the dataline voltage at a predetermined bias level, the circuit comprising four MOS transistors, the first, second and third and the first and fourth thereof being connected in respective series from VCC to ground, the gates of the first and second transistors being connected to ground, the bias level being established between the second and third transistors with the gate of the third transistor being connected to the node therebetween.
Inventors
- 👤 Hiep Van Tran
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:06
CPC Classifications
G; G11; G11C; G11C7/00; G11C7/10; G11C7/1048
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
182 words
A CMOS memory arrangement comprising (FIG. 4) at least one memory cell (13), a bitline (20) for determining the state of each memory cell, pull-up means (30) for raising said bitline (20) to a power supply potential, VCC, a dataline (33,33') for transmitting the determined state of said memory cell (13) to a sense amplifier (40), pass means (31, 31') for controllably permitting current to flow between said bitline (20) and dataline (33, 33'), and a bias means (58, 59, 60, 13') for adjusting said dataline to a selected bias voltage level (55), including first (58), second (59), third (60), and fourth (13') MOS transistor means for passing current, said first (58), second (59) and third (60), and said first (58) and fourth (13') transistor means being connected in respective series from said power supply potential, VCC, to ground, the gates of said first (58) and second (59) transistors being connected to ground, said bias voltage level being established between (55) said second (59) and third (60) transistors, with the gate of said third transistor (60) being connected to a node therebetween.
Claim 2
Dependent Claim
182 words
A CMOS memory arrangement comprising (FIG. 4) at least one memory cell (13), a bitline (20) for determining the state of each memory cell, pull-up means (30) for raising said bitline (20) to a power supply potential, VCC, a dataline (33,33') for transmitting the determined state of said memory cell (13) to a sense amplifier (40), pass means (31, 31') for controllably permitting current to flow between said bitline (20) and dataline (33, 33'), and a bias means (58, 59, 60, 13') for adjusting said dataline to a selected bias voltage level (55), including first (58), second (59), third (60), and fourth (13') MOS transistor means for passing current, said first (58), second (59) and third (60), and said first (58) and fourth (13') transistor means being connected in respective series from said power supply potential, VCC, to ground, the gates of said first (58) and second (59) transistors being connected to ground, said bias voltage level being established between (55) said second (59) and third (60) transistors, with the gate of said third transistor (60) being connected to a node therebetween.
Claim 3
Dependent Claim
16 words
The arrangement of claim 1, characterized in that said pull-up means is a p-channel MOS transistor.
Claim 4
Dependent Claim
16 words
The arrangement of claim 1, characterized in that said pass means is a p-channel MOS transistor.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-12-01 | 1990-06-02 | 1990-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-12-01 | 1994-06-02 | 1994-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-12-01 | 1998-06-02 | 1998-12-02 | $7700.00 | Window Closed / Lapsed |