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(17) Software break
If the debugger does not terminate normally due to a factor such as a freeze while a software break is set, the
instruction for which the software break is set and that has been substituted by a debug instruction remains as is.
To avoid this, select "Object" in the Download dialog box and download the load module. In particular, take care
regarding this point when activating the debugger using a project file, as well as when using PM plus.
(18) Setting of "Monitor Clock"
With a device such as the 78K0/Kx1+
dialog box, the clock source of the device is changed to the clock from QB-78K0MINI during a break. If the
peripheral emulation function does not stop (by selecting "Non Break" for "Peripheral Break"), due to clock
changes, timing may differ from the timing in the actual operation. In order to adjust the clock timing even during
a break, mount an oscillator with the same frequency as the actual clock, in QB-78K0MINI.
Note Devices in which "OCD Control Code V1.xx" is displayed by selecting [About...] from the [Help] menu in the
ID78K0-QB.
(19) Caution on performing step execution
Some peripheral registers remains stopped during step execution. In such a case, execute the instruction with
"Run-Break" specified.
(20) Software break in RAM area
Do not overwrite the program in which a software break has been set to the internal low-speed RAM area or
external RAM area; otherwise the break may not occur normally. Even if the break occurs, the program before
being overwritten is automatically restored.
Therefore, be sure set a software break after the program is overwritten.
(21) Execution time when using pseudo real-time RAM monitor function
The following shows the execution time when using the pseudo real-time RAM monitor function, whereas the
operating frequency = 5 MHz and PCC = 0.
<When Interrupts are enabled (EI) (with an RRM generated while a user program main routine is running)>
One cycle = Several tens of ms to several hundres of ms
B
A
A
µ
µ
µ
T11=40 s
T12=58 s
T13=8 s
µ
T1=106 s
<When Interrupts are disabled (DI) (with an RRM generated while a user program interrupt service routine is running)>
D
T11=31 s
µ
48
CHAPTER 6 CAUTIONS
Note
, when "System" is selected for "Monitor Clock" in the Configuration
C
A
C
A
µ
µ
T0=19 s
T2=35 s
T2 occurs for the number of bytes loaded with RAM function
User's Manual U17029EJ3V0UM
C
A
C
A
µ
T2=35 s
T0=19 s
C
A
C
µ
µ
T0=19 s
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