Patent ID: 8629713
Filing Date: 2014-01-14
Classification: G01R,H03K

Abstract:
1. An integrated circuit (IC) device comprising: first, second, and third external pins; a voltage regulator having an input coupled to the first external pin and an output; core circuitry having an input coupled to the output of the voltage regulator and coupled to the second external pin; a first voltage detector having an input coupled to the second external pin and an output, the first voltage detector to assert a first detect signal at the output in response to detecting that a voltage at the input of the core circuitry is above a first threshold; a second voltage detector having an input coupled to the first external pin and an output, the second voltage detector to assert a second detect signal in response to detecting that a voltage at the first external pin is above a second threshold; and a circuit having a first input coupled to the output of the first voltage detector and a second input coupled to the output of the second voltage detector, and a third input coupled to the third external pin, the circuit to assert a bypass mode signal to disable the voltage regulator in response to an assertion of a test mode signal at the third external pin and an assertion of the first detect signal at the first input prior to an assertion of the second detect signal at the second input.