1. A single-wire bus (SuBUS) slave circuit comprising:a front-end circuit coupled to a SuBUS and configured to receive a start-of-sequence (SOS) training sequence corresponding to a synchronization interval and preceding a SuBUS telegram corresponding to a predefined SuBUS operation; and
a digital control circuit coupled to the front-end circuit and configured to:
count a plurality of free-running oscillator (FRO) pulses during the synchronization interval;
determine a slave FRO count during a predefined slave task interval based on the plurality of FRO pulses counted during the synchronization interval;
control the front-end circuit to enable a slave task independent of the predefined SuBUS operation during the predefined slave task interval; and
control the front-end circuit to disable the slave task in response to the slave FRO count indicating an expiration of the predefined slave task interval.