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CHAPTER 2 DEPENDENCE FUNCTIONS
2.2.1.1 MCU Operation Mode
There are two MCU operation modes as follows:
• Debugging Mode
• Native Mode
■ Setting MCU Operation Mode
Set the MCU operation mode.
There are two operation modes: the debugging mode, and the native mode. Choose either one using the SET
RUNMODE command.
At emulator start-up, the MCU is in the debugging mode.
When the MCU operation mode is changed, all the following are initialized:
- Data breakpoints
- Event condition settings
- Sequencer settings
- Trace measurement settings and trace buffer
- Performance measurement settings and measured result
● Debugging Mode
All the operations of evaluation chips can be analyzed, but their operating speed is slower than that of mass-
produced chips.
● Native Mode
Evaluation chips have the same timing as mass-produced chips to control the operating speed. Note that the
restrictions the shown in Table 2.2-1 are imposed on the debug functions.
Table 2.2-1 Restrictions on Debug Functions in Native Mode
Applicable series Restrictions on debug functions
F
2
MC-16/16H
- Memory mapping setting is disabled and each area is accessed to the MCU
specifications.
- Traces cannot be disassembled.
Common to all series - When a data read access occurs on the MCU internal bus, the internal bus
access information is not sampled and stored in the trace buffer.
- Even when a data break or event (data access condition) is set for data on the
MCU internal bus, it may not become a break factor or sequencer-triggering
factor.
- The coverage function may fail to detect an access to data on the MCU
internal bus.