Circuit arrangement and method for generating a time-limited signal
Patent 6806749 Issued on October 19, 2004. Estimated Expiration Date: 
September 12, 2022. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
September 12, 2022. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesCMOS Reset circuit Power-on reset circuit Power supply potential rising detection circuit Zero-consumption power-on reset circuit Circuit for covering initial conditions when starting-up an integrated circuit device Power-on reset circuit for resetting semiconductor integrated circuit Patent #: 5812001 InventorAssigneeApplicationNo. 10242880 filed on 09/12/2002US Classes:327/143, Responsive to power supply327/198, Initializing, resetting, or protecting a steady state condition327/227, Monostable327/546With field-effect transistorExaminersPrimary: Callahan, Timothy P.Assistant: Englund, Terry L. Attorney, Agent or FirmForeign Patent References
International ClassesH03K 1722H03K 3355 H03K 1722 H03L 700 AbstractA circuit includes a second switching unit, a first switching unit that is connected to and selectively actuates the second switching unit, and a capacitive voltage divider including first, second and third capacitances connected in series. The first and second switching units are connected respectively to first and second junctions between the first and second and the second and third capacitances respectively. An associated method involves applying a supply voltage to the voltage divider so as to charge the first and second junctions, discharging the first junction through the first switching unit, which, dependent on the voltage of the first junction, selectively actuates the second switching unit to supply an additional charging current to the second junction. A time-limited signal such as a power-on reset signal is tapped from the first or second switching unit or from the second junction. Thereafter, the circuit draws no further current. | |
