M38000T2-CPE User’s Manual 4. Hardware Specifications
R20UT0213EJ0600 Rev.6.00 Page 71 of 82
Oct. 20, 2010
IMPORTANT
Notes on Stop and Wait Modes:
• The STP and WIT instructions are executed as a “NOP instruction” no matter whether the program is single-
stepped or over-stepped.
• During the stop or wait mode, debug commands (break, dump, single-step, stop, etc.) with the emulator
debugger cannot be executed. Wait until the emulator debugger returns from stop or wait mode by reset input
or interrupt, etc. from the user system before executing the command. Also, debug command cannot be
executed when the target clock is not oscillating. The internal clock ø can stop in the following cases.
- When the system clock of the emulator MCU is not oscillating
- When the emulator MCU is in stop mode
- When the emulator MCU is in wait mode
Notes on MCU Status While a Program Is Stopped:
• With this emulator, the program is stopped with a loop program to a specified address. Note that, in this case,
peripheral circuits (e.g. timer) are still operating.
• If an interrupt request is generated at any time other that when the program is being executed (while the user
program is paused or a debug program is running), the interrupt is not generated because the emulator disables
interrupts. However, the interrupt request bit can be set. And the interrupt request bit cannot be cleared by the
emulator.
Notes on Step Execution
• Interrupts are disabled during single-step execution. Accordingly, the interrupts are not generated because the
emulator disables interrupts. However, an interrupt request bit can be set. And the internal request bit cannot be
cleared by the emulator.
• The single-steps and breaks cannot be executed in the internal RAM area.
Notes on MAP References and Settings:
• The initial MAP settings when the emulator debugger starts up are as follows.
0000h to 3FFFh: EXT
4000h to FFFFh: INT (emulation memory available)
• With this product, you can map memory by 64 bytes
• Be sure to set the internal RAM of MCU and SFR area to “EXT”.
When the RAM area of the emulator MCU is larger than the RAM in the emulator MCU, set the marginal area
to “INT”.
• Writing into the emulation memory allocated to 1000h -- FFFFh is protected by the ROM protect function of
the emulator.
Note on Reset Command Execution During User Program Execution:
• The real-time aspect of the user program is not guaranteed when debug commands such as dump are executed
during user program execution.
Note on Flash Memory and EPROM Modes:
• The emulator does not emulate flash memory and EPROM modes. Also, the emulator does not emulate CPU
rewrite mode in flash memory mode.
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