Patent ID: 8116106
Filing Date: 2012-02-14
Classification: H02M

Abstract:
1. An integrated circuit, comprising: a threshold detection circuit coupled to a first external terminal of the integrated circuit to measure a signal from a first resistive external circuit coupled between a fourth external terminal of the integrated circuit and the first external terminal of the integrated circuit during a duration of an initialization period after the fourth external terminal has been charged to a supply threshold value; a regulator circuit coupled between a second external terminal of the integrated circuit and the fourth external terminal, the regulator circuit coupled to charge the fourth external terminal to the supply threshold value during the initialization period of the integrated circuit; and a selection circuit coupled to the threshold detection circuit to select a parameter/mode of the integrated circuit in response to the signal measured from the first resistive external circuit coupled between the fourth external terminal and the first external terminal during the duration of the initialization period after the fourth external terminal has been charged to the supply threshold value, wherein the first external terminal is further coupled to one or more additional external circuits, each of which comprising one or more components, wherein the one or more additional external circuits are coupled to provide one or more signals at the first external terminal to be used by the integrated circuit during normal operation at times other than the initialization period to provide at least one additional function for the integrated circuit after the initialization period of the integrated circuit is complete.