Renesas Emulation Pod for M16C/80 Group MCUs M30803T-RPD-E - Manual (Page 16)

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Notes on Watchdog Function:
• The MCU's watchdog timer can be used only while programs are being executed. To use it
otherwise, disable the watchdog timer. And take note that when the following two conditions are
satisfied, programs can not be executed.
(1) The watchdog timer function selection bit (CM06) of the system clock control register 0 is set
to "1".
(2) The HOLD function is used while the watchdog timer is operating.
• If the reset circuit of the target system has a watchdog timer, disable it when using the emulator.
IMPORTANT
Note on Differences between Actual MCU and Emulator:
• Operations of the emulator differs from those of mask MCUs as listed below.
(1) Reset condition
(2) Initial values of internal resource data at power-on
(3) Interrupt stack pointer (ISP) after releasing reset
(4) Internal memories (ROM and RAM) capacities, etc.
This emulator system has an MCU with 24KB RAM (0400h - 63FFh). In single-chip mode
or memory expansion mode, emulation memory for internal ROM is automatically allocated
in the area between FC0000h through FFFFFFh, and it can be read and written into.
(5) Oscillator circuit
• Make note of the fact that in the oscillator circuit where a resonator is connected between
the X
IN
and X
OUT
pins, oscillation does not occur because a flexible cable, buffer IC and other
devices are used between the evaluation MCU and the target system. It is same for sub-clock
oscillators (X
CIN
and X
COUT
).
• For notes on when using the oscillator circuit on the target system, refer to "3.3 (1) Using
the Oscillator Circuit on the Target System" (page 30).
(6) A-D conversion
As a flexible cable, a pitch converter board and other devices are used between the evaluation
MCU and the target system, some characteristics are slightly different from those of the actual
MCU. Perform final evaluations of the A-D converter with the actual MCU.
(7) Port P10
As a part of I/O port (P10) is connected to the target system through the analog switch circuit,
electric characteristics slightly differ from those of actual MCU.
(8) Voltage
When using this product with the operating frequency at 20 MHz, the voltage of the target
system should be +5.0 to +5.5 V.