
R0E417250MCU00 User
’s Manual
2. Setup
R20UT3587EJ0302 Rev.3.02
Page 33 of 232
Sep.01. 21
2.8 Selecting the Clock Supply
2.8.1 Clock Source
You can choose the clock source supplied to the evaluation MCU in the System page in the Configuration properties dialog
box of the emulator debugger. Table 2.1 shows the clock sources and their default settings.
Table 2.1 Clock supply to the MCU
Clock
Clock selection in the
emulator debugger
Description
Default setting
Main (EXTAL)
Emulator
Oscillator module mounted on IC21
Yes
User
Oscillator circuit on the user system
-
Generate
Internal generator circuit
(8.0 to 10.0 MHz)
-
Sub
(OSC1 and OSC2)
Emulator
Internal oscillator circuit
(32.768 kHz)
Yes
IMPORTANT
Notes on Changing the Clock Supply:
⚫
The clock supply can be set on the System page of the Configuration properties dialog box when starting up the
emulator debugger or by an input of the Emulator_clock command on the Command Line window.