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M3028BT-EPB User’s Manual 2. Setup
REJ10J1459-0200 Rev.2.00 Sep 16, 2006
2.11 Selecting Clock Supply
2.11.1 Selecting Clock Supply
You can choose a clock supplied to the evaluation MCU by the Emulator tab in the Init dialog box of the emulator debugger.
Table 2.1 shows the clocks and their initial settings.
Table 2.1 Clock supply to the MCU and default settings
Clock Display of emulator debugger Description Default setting
Internal
Internal oscillator circuit
(OSC-3 or OSC-2)
Yes
External Oscillator circuit on the user system -
Main (X
IN
-X
OUT
)
Generated
Internal generator circuit
(1.0 to 20.0MHz)
-
Internal
Internal oscillator circuit
(32.768 kHz)
-
Sub (X
CIN
-X
COUT
)
External Oscillator circuit on the user system Yes
IMPORTANT
Notes on Changing the Clock Supply:
z The clock supply can be set by the Init dialog box when starting up the emulator debugger or inputting CLK
command on the script window.
2.11.2 Using an Internal Oscillator Circuit Board
(1) Kinds of Oscillator Boards
The PC7501 comes with an oscillator circuit board OSC-3 (30MHz). And an oscillator circuit board OSC-3 (20MHz) and an
oscillator circuit bare board OSC-2 are included with this product. If you use an internal oscillator circuit board (20MHz) or
OSC-2 as a main clock, choose "Internal" in the emulator debugger after replacing oscillator circuit boards to change a clock
supplied to an MCU.
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