M306V8T-EPB User’s Manual 4. Hardware Specifications
REJ10J0777-0100 Rev.1.00 2005.08.01 Page 78 of 90
IMPORTANT
Note on Clock Supply to the MCU:
A clock supplied to the evaluation MCU is selected by the Emulator tab in the Init dialog box of the emulator
debugger.
(1) When "Internal" is selected:
A clock generated by the oscillator circuit board in the PC7501 is supplied. It is continually supplied
regardless of the status of the user system clock and that of the user program execution.
(2) When "External" is selected:
A clock generated by the oscillator in the user system is supplied. It depends on the status of the oscillation
(on/off) of the user system.
(3) When "Generate" is selected:
A clock generated by the dedicated circuit in the PC7501 is supplied. It is continually supplied regardless of
the status of the user system clock and that of the user program execution.
Note on Operating Frequency:
You can not use this product with a main clock (XIN-XOUT) less than 1 MHz. To use it with a main clock less
than 1 MHz, contact your local distributor.
Notes on Map Settings:
Be sure to set the OSDRAM area (8000h -- 8FFFh) to INTERNAL.
Be sure to set the OSDROM area (30000h -- 4FFFFh) to EXTERNAL.
Note on Stop and Wait Modes:
Do not single step an instruction shifting to stop or wait mode. It may cause communication errors.
Note on the Watchdog Function:
If the reset circuit of the user system has a watchdog timer, disable it when using the emulator.
Note on Access Prohibited Area:
You cannot use internally reserved areas. Write signals to the areas will be ignored, and values read will be
undefined.
Note on Protect Register:
The protect is not canceled when bit 2 of protect register PRCR (PRC2), which enables writing into the PD9,
address 0362h and 0366h registers, is changed with the below procedure.
(1) Step execution of an instruction setting PRC2 to "1"
(2) Setting a break point between an instruction setting PRC2 to "1" and a point where the PD9, address 0362h
and 0366h registers are set
(3) Setting PRC2 to "1" by the memory window or script window