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EPSON
S1C63454 TECHNICAL MANUAL
CHAPTER 7: ELECTRICAL CHARACTERISTICS
7.7 Timing Chart
System clock switching
VDC
OSCC
CLKCHG
∗
∗
2.5 msec min.
5 msec min.
∗
1 instruction execution time or longer
Note: When the OSC1 oscillation circuit has been selected as the CR oscillation circuit, it is not neces-
sary to set the VDC register. Whether the VDC register value is "1" or "0" does not matter.
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