A method of powering up a circuit includes powering up a latch circuit in a known latch state by applying a first power supply voltage differential of a first voltage domain across power supply terminals of the latch circuit. A current diode inhibits current diode in a current path between a latch node of the latch circuit and a power supply terminal when the power supply voltage differential is below a threshold voltage during the powering up in which the inhibiting prevents the latch circuit from switching from the known latch state during the powering up.