Patent ID: 9417640
Filing Date: 2016-08-16
CPC Classification: G05F,H03K

Claim Text:
1. An integrated circuit device comprising: a state register programmed with a state indicating a voltage level to set for a pad; and a voltage holding circuit coupled to the pad and the state register, and configured to force the pad to the voltage level in response to an event, wherein the voltage holding circuit is configured to set the voltage level at the pad with a first current in response to the event, and to subsequently hold the voltage level at the pad with a second current weaker than the first current in response to the event, wherein the second current is sufficiently weak such that the voltage level held at the pad is overridable by an external driver, the first current is turned off when the voltage level is held at the pad with the second current, and the event indicates supply voltage to the integrated circuit device transitioning from an unknown voltage level to a power-on voltage level.