Renesas Emulator Debugger M16C PC4701 Manual de usuario descargar pdf (Pagina 24)

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(1) Using the Oscillator Circuit on the Target System

When turning on the power supply, the internal clock of 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 CLK command

or the Init dialog box on the emulator debugger. (For details, refer to the user's manual of the emulator

debugger.)

Figure 3.2 External oscillator circuit

Figure 3.3 Circuit in which oscillation does not occur (same for XCIN-XCOUT)

IMPORTANT

Notes on External Clock:

• To operate the emulation pod with an external clock, construct the oscillator circuit

as shown in Figure 3.2 in the target system and input the oscillator output at 50% duty

(within the operating range of the evaluation MCU) into pin XIN. And pin XOUT

should be open.

• Make note of the fact that in the oscillator circuit shown in Figure 3.3 where a

resonator is connected between pins XIN and XOUT, oscillation does not occur because

a flexible cable, buffer IC and other devices are used between the evaluation MCU

and the target system.

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Renesas Emulator Debugger M16C PC4701 Manual de usuario Pagina 24