R0E417250MCU00 Datasheet, PDF (150/228 Pages) Renesas Technology Corp – E100 Emulator MCU Unit for H8SX/1700 Series

R0E417250MCU00 User’s Manual
Table 5.25 Measurement modes (continued)
[Interrupt-disabled range between two events]
5. Debugging Functions
Figure 5.70 Interrupt-disabled range between two events
Measurement is of ranges over which interrupts are disabled from the start
event to the end event.
Specifically, the intervals over which interrupts are disabled and number of
times interrupts are disabled within the range specified by Start event and
End event are measured. The measurement of time starts when interrupts are
disabled and is suspended when interrupts are re-enabled. The number of
times is incremented by one each time interrupts are disabled.
Start event: One or multiple events can be set.
End event: One or multiple events can be set.
[CAUTION]
To measure the execution time of a function (maximum, minimum or average execution time of a function), use Between two
events.
Specify fetching from the first address of the function as the start event and fetching from the exit point of the function (point
corresponding to the line containing the function’s return statement) as the end event. If there is more than one exit point, set a
fetch condition that covers each of them as the end event.
(2) Selecting the unit of measurement
This setting applies in common to all 8 sections. The following units of measurement are available:
10 ns (default), 20 ns, 40 ns, 80 ns, 160 ns, 1.6 µs
The maximum measurement time varies with the unit of measurement you set.
5.10.4 Starting Performance Measurement
When the user program is run, performance measurement is automatically started according to the conditions set on
performance measurement.
When the user program is halted, the results of measurement are displayed in the Performance Analysis window.
When execution of the user program is halted and then restarted without changing the conditions of measurement, the newly
measured times are added to the previous values.
To perform the measurements afresh, clear the results of measurement before running the program.
REJ10J1831-0200 Rev.2.00 Jun.1, 2009
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