Circuit arrangement and method for supplying power and clock for clocked consumer

Circuitry for power supply and timing for timed load, at the - a supply energy (E1) is fed, and - providing a clock signal (CLK) having a frequency and a supply voltage (VDD) for the clocked consumer, wherein the frequency and / or the supply voltage (VDD) is controllable by the circuit arrangement, that the portion of the supply energy (E1), which is not required by the consumer gletakteten, a predeterminable desired value is controlled to be at least.