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CHAPTER 2 DEPENDENCE FUNCTIONS
2.4.1.2 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.
The data access to internal bus may not be detected by emulator in native mode. Therefore, when the MCU
operation mode is changed, all the following are initialized:
- Data breakpoints
- Trace measurement settings and trace buffer
■ 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 2.4-1 are imposed on the debug functions.
Table 2.4-1 Restrictions on Debug Functions in Native Mode
Applicable series Restrictions on debug functions
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.