R0E00008AKCE00EP62 Datasheet, PDF (74/82 Pages) Renesas Technology Corp – Microcomputer Development Environment System

Section 5 Differences between the MCUs and the Emulator
15. Do not use an MCU that has been used for debugging.
If the flash memory is rewritten many times, data may be lost due to retention problems after
the emulator has been left for a few days and the data will be erased. If an error message is
displayed, exchange the MCU for a new one.
16. Forced Break Function
When the NMI# signal is used for a forced break in the emulator, the vector address of NMI#
is rewritten by the emulator program. An error will occur if a file in the host computer and the
flash memory contents are verified. Do not use the flash memory contents as the ROM data
for the mask ROM after it has been saved.
17. Setting the Usage of the NMI# Signal
In the [Configuration] dialog box, when the NMI# signal is changed as it is used in the user
program, the vector address of NMI# is not recovered. Reload the user program.
18. Address Break Release Function
When the address break function is not released for users, the vector address of address break
is rewritten by the emulator program. An error will occur if a file in the host computer and the
flash memory contents are verified. Do not use the flash memory contents as the ROM data
for the mask ROM after it has been saved.
19. Initializing the Internal I/O Register with the Reset_CPU Function
Be sure to initialize the internal I/O registers shown below by the user program since they are
not initialized by selecting [Debug] – [Reset CPU] or using the RESET command.
Table 5.3 Registers Not Initialized
MCU Name
H8/36902F
H8/36912F
Register Not Initialized
IEGR1, IEGR2, IENR1, IENR2, IRR1, IRR2, IWPR, MSTCR1, MSTCR2
20. Step Execution of the SLEEP Instruction
When the interrupt mask bit (I) in the condition code register (CCR) is 1, do not perform step
execution of the SLEEP instruction. If the step execution is performed and not finished
correctly, restart the emulator.
Rev. 1.00 Aug.03, 2009 Page 18 of 22
REJ10J2022-0100