M30290T-EPB User’s Manual
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3.1 Selecting Clock Supply
3.1.1 Clocks
You can choose a clock supplied to the evaluation MCU by the Emulator tab in the Init dialog box of the emulator
debugger. Table 3.1 shows the clocks and their initial settings.
Table 3.1 Clock supply to the MCU
Clock
Display of
emulator debugger
Description
Default
setting
Internal
Internal oscillator circuit board
(OSC-3 or OSC-2)
Yes
External
Oscillator circuit on the user system
-
Main (X
IN
-X
OUT
)
Generate
Internal generator circuit
(1.0--20.0 MHz)
-
Internal
Internal oscillator circuit
(32.768 kHz)
-
Sub (X
CIN
-X
COUT
)
External
Oscillator circuit on the user system
Yes
3.1.2 Using an Internal Oscillator Circuit Board
(1) Kinds of Oscillator Boards
The PC7501 comes with an oscillator circuit board OSC-3 (30 MHz). And an oscillator circuit board OSC-3 (20 MHz)
and an oscillator circuit bare board OSC-2 are included with this product. If you use an internal oscillator circuit board
of the PC7501 as a main clock, choose "Internal" in the emulator debugger after replacing oscillator circuit boards to
change a clock supplied to an MCU.
(2) Replacing an Oscillator Circuit Board
1. Remove the four screws of both sides of this product and lift off the upper cover (see Figure 3.1).
Figure 3.1 Removing the upper cover
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