User's Manual

AVR0000
9
0001B-AVR-10/09
3.4 Error Handling
In test scenarios where external interferers or events are applied to check the
robustness of the DUT, the device may not be able to continue with normal operation.
Normal operation according to 3.3 is always indicated with one out of three LED’s
blinking, whereas an error condition is visualized by all three state LED’s (LED_0 …
LED_2) on.
If a malfunction is indicated and the DUT is not damaged, it returns to normal
operation after two seconds. The same holds for unexpected resets of the whole
system, for instance during an ESD stress test. Such an event may cause an internal
reset and the DUT immediately continues with normal operation according to the
mode selected before.
Furthermore, any behavior of the state LED’s different to 3.3 indicates a malfunction
of either the microcontroller or radio transceiver part.