HD6432633 Datasheet, PDF (1019/1453 Pages) Renesas Technology Corp – Series of Microcomputers (MCUs: microcomputer units)

23A.3.2 External Clock Input
Circuit Configuration: An external clock signal can be input as shown in the examples in figure
23A-6. If the XTAL pin is left open, make sure that stray capacitance is no more than 10 pF.
In example (b), make sure that the external clock is held high in standby mode.
EXTAL
XTAL
Open
External clock input
(a) XTAL pin left open
EXTAL
XTAL
External clock input
(b) Complementary clock input at XTAL pin
Figure 23A-6 External Clock Input (Examples)
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