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Precision "Power-On Reset" Control Circuit

IP.com Disclosure Number: IPCOM000037275D
Original Publication Date: 1989-Dec-01
Included in the Prior Art Database: 2005-Jan-29

Publishing Venue

IBM

Related People

Authors:
Ebert, WS Pitarra, JJ [+details]

Abstract

This power-on reset (POR) control circuit eliminates the possibility of prematurely turning-on "card" logic until both the power supply and system POR control line are stable enough for error-free operation. This is a precision circuit that insures that all supplies are within 18% of their final value for extremely slow voltage ramp ups. Typically, they are at their final value.