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CHAPTER 2 CONNECTION AND SETTINGS
Figure 2.6-2 Crystal mounting example
Note:
Oscillation by mounting crystals on the user system is not supported.
To supply a clock from the user system, provide an oscillation circuit in the user system.
Include a buffer such as the CMOS buffer in the circuit, then supply the clock via the buffer.
Table 2.6-1 Clock switching method
Clock supply method SW1 setting S1 setting
Main clock Secondary clock 1 2 3 4
Crystal area Yes OFF OFF OFF OFF B1-C1, B2-C2 shorted
No OFF OFF ON ON A1-B1, A2-B2 shorted
User system Yes ON ON OFF OFF B1-C1, B2-C2 shorted
No ON ON ON ON A1-B1, A2-B2 shorted