Systems for low power distribution in a power distribution network (PDN) contemplate using multiple low-power conductors to convey power from a power source to a remote subunit. The multiple conductors are isolated from one another to help prevent overcurrent conditions in a fault condition. In a first exemplary aspect, the isolation is provided by galvanic isolation. In a second exemplary aspect, the isolation is provided by diodes at the remote subunits. Further, current sensors may be used at the power source to detect if any of the multiple low-power conductors are carrying current above a defined threshold current. By providing one or more of these safety features, a multiplexer may not be needed at the remote subunit, thus providing cost savings while preserving the desired safety features.

A method includes: providing a device having a counter that stores a cycle count measuring a number of clock cycles since the device was last turned ON or a timer that stores an elapsed time since the device was last turned ON; (a) flagging a first or additional defined memory location when the cycle count or the elapsed time reaches a first or additional first milestone; (b) unflagging the first or additional defined memory location when the cycle count or the elapsed time reaches a second or additional second milestone, wherein the second or additional second milestone is greater than the first or additional first milestone; (c) determining that the device is turned OFF and then ON again; repeating steps (a) through (c) a specified number of times; and resetting the device or turning a program ON when all the first or additional memory locations reach a specified flag configuration.