Patent ID: 9419614
Filing Date: 2016-08-16
CPC Classification: G06F,H01L,H03K

Claim Text:
1. Detection circuitry for detecting an open-circuit condition in a wire, the detection circuitry comprising: a first signal generator that generates and applies a binary sequence to a first end of the wire; a first series combination of a first resistor and a first switch connected between a voltage supply node and a second end of the wire; a second series combination of a second resistor and a second switch connected between the second end of the wire and a ground node; comparator circuitry that compares (i) the binary sequence generated by the first signal generator and (ii) a signal based on the voltage at the second end of the wire to check for an open-circuit condition in the wire; and logic circuitry that receives the binary sequence from the first signal generator and closes one of the first and second switches as a function of a value in the binary sequence, wherein the comparator circuitry checks for the open-circuit condition in the wire only when one of the first and second switches is closed by the logic circuitry.