REUSING MEMORY ARRAYS FOR PHYSICALLY UNCLONABLE FUNCTION (PUF) GENERATION

An array of bit cells is programmed with user data, each row including a corresponding word line and each column including a corresponding column line. The array includes a plurality of differential PUF bits, each having a first and second bit cell programmed with user data. A first set of sense-amp...

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Bibliographic Details
Main Authors Roy, Anirban, Mahatme, Nihaar N
Format Patent
LanguageEnglish
Published 02.05.2024
Subjects
CALCULATING
COMPUTING
COUNTING
ELECTRIC DIGITAL DATA PROCESSING
INFORMATION STORAGE
PHYSICS
STATIC STORES
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Summary:An array of bit cells is programmed with user data, each row including a corresponding word line and each column including a corresponding column line. The array includes a plurality of differential PUF bits, each having a first and second bit cell programmed with user data. A first set of sense-amplifiers outputs a set of data bits of the user data, and a second set of sense-amplifiers outputs a set of differential bits, each differential bit based on a differential current between two columns lines of the selected column lines corresponding to the first and second bit cells of a corresponding differential PUF bit along the selected word line. A potential PUF bit generator outputs a set of potential PUF bits based on the set of data bits of the user data from the first set of sense-amplifiers and the set of differential bits from the second set of sense-amplifiers.
Bibliography:Application Number: US202218050547