F²MC-16FX Family, Emulating and Debugging with Softune and MB2198-01, Doc. No. 002-04828 Rev. *B
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14. Trigger-Input and Emulator-Output
How to Use the Two BNC Connectors
14.1
The BNC Connectors
The MB2198-
01 emulator has two BNC connectors. The left one is the “
TRIG
”-Input and the right one the
“
EMUL
”-Output.
14.2
Trigger-Input
With this input an execution can be stopped. The Trigger-
Input is a hardware “break point”.
A logical “high” (= 3.3V) on this input stops the execution in the debugging mode. Note, that because of internal
latches and different clock speeds of the emulator and the MCU the termination is not immediately. The break
slip is in a range of dozens to hundreds machine clock cycles.
The execution can be resumed after a triggered break.
Because of the 3.3V input and an internal 100K pull down resistor, it is recommended to use a serial 50K
resistor, if a 5V signal is used: