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3.3 Selecting Clock Supply
There are two ways to supply a clock to the MCU, using the oscillator circuit of the emulation pod
or using the oscillator circuit on the target system. Table 3.2 shows the factory-settings of each clock
supply.
Table 3.2 Clock supply to the MCU
IMPORTANT
Note on Changing the Clock Supply:
• For using P31/XCIN pin as a sub-clock, it is necessary to set the SW1 in the
emulation pod to XCIN side. For how to set the switches, refer to "3.2 Switch
Settings" (page 23).
•The clock supply of XIN-XOUT and XCIN-XCOUT pins can be set by the Init
dialog when starting up the emulator debugger or inputting CLK command on the
script window. The examples of CLK command are below.
Example 1. When selecting the internal oscillator circuit of the emulation pod
CLK INT,INT
Example 2. When selecting the oscillator circuit on the target system
CLK EXT,EXT
Clock Description Display of emulator debugger
Factory-setting
XIN-XOUT
XCIN-XCOUT
Internal oscillator circuit of emulation pod
(OSC-3: 16 MHz)
Target system
Internal oscillator circuit of emulation pod
(32.768 kHz)
Target system
Internal
External
External
Internal
Yes
-
Yes
-