| 摘要 |
A circuit arrangement ( 1 ) has a first circuit block ( 2 ) operating at a first supply voltage and a second circuit block ( 3 ) operating at a second supply voltage. The first circuit block ( 2 ) is coupled to the second circuit block ( 3 ) by a voltage level shifting unit ( 4 ) in order to transmit a first activation or deactivation signal to the second circuit block ( 3 ). It likewise has a voltage level detector ( 5 ) which operates at the second supply voltage and is coupled to the voltage level shifting unit ( 4 ) and which can be supplied with the first supply voltage, and which is set up such that it outputs a first control signal if the voltage level of the first supply voltage is below a threshold value. The voltage level shifting unit ( 4 ) transmits the first deactivation signal to the second circuit block ( 3 ) when the voltage level detector ( 5 ) outputs the first control signal.
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