Method for wireless data interchange between circuit units within a package, and circuit arrangement for performing the method. The invention provides a circuit arrangement having circuit units (101a-101n) which are arranged in a package (100), a connecting device (200) for connecting the circuit units (101a-101n) to one another and for data interchange between the circuit units (101a-101n), and connection units (203) for connecting the circuit units to external circuit units and for supplying electrical power to the circuit arrangement, where data interchange between the circuit units (101a-101n) arranged within the package (100) is performed using electromagnetic waves which are transmitted by transmission units (201a-201n) and are received by reception units (202a-202n). The circuit units (101a-101n) arranged in the package (100) are in this case respectively equipped with the transmission units (201a-201n) and the reception units (202a-202n).