Renesas M30620T-CPE Network Card User Manual


 
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(2) Using the Oscillator Circuit on the Target System
To operate the compact emulator with the oscillator circuit on the target system, construct the
oscillator circuit as shown in Figure 3.1 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. It is same for sub-clock oscillator (XCIN and XCOUT).
Figure 3.1 External oscillator circuit
Make note of the fact that in the oscillator circuit shown in Figure 3.2 where a resonator is connected
between the XIN and XOUT pins, oscillation does not occur because an emulation circuit is used
between the evaluation MCU and the target system. It is same for sub-clock oscillator circuits (XCIN
and XCOUT).
Figure 3.2 Circuit in which oscillation does not occur (same for XCIN-XCOUT)