R0E417250MCU00 Datasheet, PDF (222/228 Pages) Renesas Technology Corp – E100 Emulator MCU Unit for H8SX/1700 Series

R0E417250MCU00 User’s Manual
7. Hardware Specifications
IMPORTANT
Note on Clock Supply to the MCU:
z A clock source supplied to the evaluation MCU is selected on the System page of the Configuration properties
dialog box of the emulator debugger.
(1) When "Emulator" is selected:
A clock source generated by the oscillator circuit board on the MCU unit is supplied. It is continually
supplied regardless of the status of the user system clock and that of the user program execution.
(2) When "User" is selected:
A clock source generated by the oscillator in the user system is supplied. It depends on the status of the
oscillation (on/off) on the user system.
(3) When "Generate" is selected:
A clock source generated by the dedicated circuit in the E100 is supplied. It is continually supplied
regardless of the status of the user system clock and that of the user program execution.
Note on the Watchdog Function:
z If the reset circuit of the user system has a watchdog timer, disable it when using the emulator.
Note on Access Prohibited Area:
z You cannot use internally reserved areas. Write signals to the areas will be ignored, and values read will be
undefined.
Note on Breaks:
z The following break functions are available in the emulator debugger.
(1) Software break
This is a debugging function which generates a BRK interrupt by changing an instruction at a specified
address to a BRK instruction (a dedicated instruction for use with the emulator) to break a program
immediately before the system executes an instruction at a specified address. The instruction at the preset
address will not be executed.
(2) Hardware break
This is a debugging function which breaks a program by setting the detection of an execution of an
instruction at a specified address as a break event. The program will break after the instruction at the
specified address is executed.
(3) Exceptional event
This is a debugging function which stops a program when an abnormal operation of the user program or
overflow of each function’s measurement counter, etc. is detected.
Note on Software Breaks:
z After you have selected the “Debug the program with overwriting of flash ROM” checkbox on the [System]
page of the [Configuration properties] dialog box, the setting of software breakpoints in internal ROM becomes
impossible. If you remove the tick from the “Debug the program with overwriting of flash ROM” checkbox,
setting such software breakpoints becomes possible.
REJ10J1831-0200 Rev.2.00 Jun.1, 2009
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