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CHAPTER 2 CONNECTION AND SETTINGS
Table 2.6-1 Clock Switching Method
Main clock
Crystal area
User system
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.
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Figure 2.6-2 Crystal Mounting Example
Clock supply method
Secondary clock
Yes
No
Yes
No
SW1 setting
1
2
3
OFF
OFF
OFF
OFF
OFF
OFF
ON
ON
ON
ON
OFF
OFF
ON
ON
ON
ON
S1 setting
4
B1-C1, B2-C2 shorted
A1-B1, A2-B2 shorted
B1-C1, B2-C2 shorted
A1-B1, A2-B2 shorted
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