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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
Sub (X
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 (16 MHz) and a 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
Clock
emulator debugger
Main (X
-X
)
IN
OUT
-X
)
CIN
COUT
Display of
Internal oscillator circuit board
Internal
External
Oscillator circuit on the target system
Generate
Internal
External
Oscillator circuit on the target system
( 26 / 80 )
Description
(OSC-3 or OSC-2)
Internal generator circuit
(1.0--16.0 MHz)
Internal oscillator circuit
(32.768 kHz)
Default
setting
Yes
-
-
-
Yes
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