Circuit for generating input transition detection pulse
US5426390A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 17, 1994 |
| Grant date | Jun 20, 1995 |
| Priority date | — |
| Expiry date | Oct 17, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K5/1532
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
In input transition detection pulse generators used in semiconductor memory devices, etc., in order to permit a designer to arbitrarily design the power supply voltage dependency of an output pulse width in accordance with use, a scheme is employed such that the functional block for detecting transition of an input or inputs to generate a pulse signal or signals, or the functional block for setting the width of each pulse signal is caused to have a function to generate pulse signals having different power supply voltage dependencies of pulse widths to perform a predetermined logical operation by a logical operation unit on the basis of pulse signals from the input transition detection pulse generation block or the pulse width setting block, thus to output a pulse having a pulse width optimum for a power supply voltage used. In place of the logical operation unit, an approach may be employed to select any one of a plurality of units as the input transition detection pulse generation block or the pulse width setting block by using a control signal to output a pulse having any pulse width. Further, the input transition pulse generation block or the pulse width setting block may be con…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.