Technical information

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(1) Using the Oscillator Circuit on the Target System
When turning on the power supply, the internal clock of the emulation pod is selected to supply the
clock to the MCU. To use the external clock on the target system, change the clock by the Init dialog
box when starting up the emulator debugger or the CLK command on the script window. (For details,
refer to the user's manual of the emulator debugger.)
IMPORTANT
Notes on External Clock:
• To operate the emulation pod with an external clock, construct the oscillator circuit
as shown in Figure 3.4 in the target system and input the oscillator output at 50% duty
(within the operating range of the evaluation MCU) into the XIN pin. And the XOUT
pin should be open.
• Make note of the fact that in the oscillator circuit shown in Figure 3.5 where a
resonator is connected between the XIN and XOUT pins, oscillation does not occur
because a flexible cable, pitch converter board and other devices are used between
the evaluation MCU and the target system. It is same for sub-clock oscillator circuits
(XCIN and XCOUT).
Figure 3.4 External oscillator circuit
Figure 3.5 Circuit in which oscillation does not occur (same for XCIN-XCOUT)