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Non-Volatile Ram Protection Circuit

IP.com Disclosure Number: IPCOM000035274D
Original Publication Date: 1989-Jun-01
Included in the Prior Art Database: 2005-Jan-28

Publishing Venue

IBM

Related People

Authors:
Cecchi, DR Kleppe, LC [+details]

Abstract

This circuit provides protection of NVRAM or EEPROM contents between system power-on and issuance of a power-on-reset signal. An otherwise unused voltage input is used as a control signal to prohibit the unintentional overwriting of vital product data.