Renesas Compact Emulator M34571T2-CPE - Manual (Page 59)

M34571T2-CPE User’s Manual 4. Hardware Specifications
REJ10J0972-0100 Rev.1.00 February 10, 2006 Page 57 of 72
IMPORTANT
Note on Watchdog Timer:
In this emulator system, the watchdog timer function must be invalid during debugging operation; it is,
therefore, necessary to invalidate the watchdog timer by prefixing the following two instructions to the user
program continuously:
DWDT
WRST
In case where no watchdog timer invalid processing as described above is carried out, there arise restrictions as
described below:
- In case where the MCU was reset during user program run execution, program stop and break cannot be
performed normally after that.
During debugging operation, be sure to execute the afore-mentioned watchdog timer invalid processing.
Note on Operation in RAM Backup Mode:
In RAM backup mode, this product operates differently from the actual MCUs. Although the actual MCU
enters RAM backup mode depending on a combination of the EPOF and POF instructions, this product is
placed in RAM backup mode by only executing the POF instruction. The EPOF instruction has no effect on this
product.
Table 4.2 shows the operation in RAM backup modes when executing each program.
Table 4.2 Operation in RAM backup modes when executing each program
Program example Actual MCU M34571T2-CPE
1-1 Yes Yes
1-2 - Yes
1-3 - -
Yes: RAM backup mode
-: No RAM backup mode
Program example 1-1 (POF and EPOF instructions executed)
RC
INY
EPOF
POF
:
Program example 1-2 (Only POF instruction executed)
RC
INY
POF
:
Program example 1-3 (Only EPOF instruction executed)
RC
INY
EPOF