Maximum Measurement Time Of The Realtime Profile - Renesas M16C/64 User Manual

R0E530640MCU00 User's Manual

5.13.14 Maximum Measurement Time of the Realtime Profile

(1) Maximum measurement time
The timer used for performance measurement is comprised of a 40-bit counter. The maximum measurement time varies with
the unit of measurement selected.
To select a unit of measurement, specify it in the Measurement interval drop-down list of the Properties dialog box.
The measurable maximum times are listed below.
Table 5.43 Maximum measurement time
No. Resolution
1 10ns
2 20ns
3 40ns
4 80ns
5 160ns
6 1.6us
CAUTION
Note that performance measurement produces an error of ± "2 resolution + 100 ns" (when resolution = 20 ns, ±140 ns)
whenever entering functions. If the resolution is 20 ns and you enter functions 10 times, ±1400 ns error occurs.
(2) Maximum measurement count
Execution counts of the realtime profile are measured using a 16-bit counter. Measurement can be taken of up to a count of
65,535.
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Maximum measurement time
Approx. 3 hours, 03 minutes, 15 seconds
Approx. 6 hours, 06 minutes, 30 seconds
Approx. 12 hours, 13 minutes, 00 seconds
Approx. 24 hours, 26 minutes, 00 seconds
Approx. 48 hours, 52 minutes, 01 seconds
Approx. 488 hours, 40 minutes, 18 seconds
5. Debugging Functions