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3.2 Using an Internal Oscillator Circuit Board
(1) Kinds of Oscillator Circuit Boards
The PC7501 comes with an oscillator circuit board OSC-3 (30 MHz). And an oscillator circuit board
OSC-3 (32 MHz) is included with this product. If you use the 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