R0E417250MCU00 Datasheet, PDF (223/228 Pages) Renesas Technology Corp – E100 Emulator MCU Unit for H8SX/1700 Series

R0E417250MCU00 User’s Manual
7. Hardware Specifications
IMPORTANT
Notes on Power Supply to the User System:
z Pin Vcc is connected to the user system to observe the voltage. Therefore, the power is not supplied to the user
system from the emulator. Design your system so that the user system is powered separately.
z The voltage of the user system should be as follows.
3.0 V ≤ Vcc ≤3.6 V,4.5 V ≤ Vcc ≤ 5.5 V
Note on Flash ROM:
z Since the number of times the flash ROM can be programmed or erased is limited, it must be replaced at the end
of its service life.
If any of the following error messages frequently appears while you are downloading a program, replace the
MCU board.
- An error has occurred in erasing of the flash ROM in the target MCU. The flash ROM may have been
degraded.
- An error has occurred in verification of the flash ROM in the target MCU. The flash ROM may have been
degraded.
Note on Debugging with Overwriting of Flash Memory:
z When the emulator reads or writes to the data flash ROM or flash ROM, software in the emulator may alter the
values of registers in the FCU. To check if the emulator has actually manipulated the registers in the FCU,
select the [Display a message when the emulator was to manipulated registers in the FCU] checkbox on the
[System] page of the [Configuration properties] dialog box. If the message “The registers of FCU was
manipulated by emulator.” is displayed, debugging with flash-ROM rewriting cannot proceed: initialize the user
program before running the program again.
Notes on Manipulation of Memory and Reading of Data from the Flash ROM and EEPROM:
z When downloading of data or programming of the flash ROM or EEPROM is attempted, the emulator writes
data to the memory in block units. Even if only a single byte of data in the EEPROM has been modified, all
memory resources in the selected block will be rewritten so the block will no longer be blank.
z When reading of data from the flash ROM or EEPROM is attempted, the emulator enters the break state, and
reading of data from the actual flash memory only proceeds once. For this reason, you will keep seeing the
same value in the emulator even after undefined data have been read out several times. When the actual MCU is
in use, on the other hand, the values change per reading operation.
z In cases where a clock source on the user system is selected, no external clock is available, and an internal
oscillator is in use, manipulating data in the flash ROM or EEPROM through windows (e.g. [Memory]
window) leads to the message “The command is not executable because the FCU operating clock is out of
operating range.” Before manipulating memory, the clock frequency must be changed to one that allows
programming of the flash ROM or EEPROM.
REJ10J1831-0200 Rev.2.00 Jun.1, 2009
Page 223 of 228