Datasheet

Section 5 Clock Pulse Generators
Rev. 2.00 Sep. 23, 2005 Page 67 of 444
REJ09B0068-0200
5.1.2 Connecting Ceramic Resonator
Figure 5.5 shows a typical method of connecting a ceramic resonator.
OSC
1
OSC
2
C
1
C
2
C
1
= 30 pF ±10%
C
2
= 30 pF ±10%
Figure 5.5 Typical Connection to Ceramic Resonator
5.1.3 External Clock Input Method
Connect an external clock signal to the OSC
1
pin and leave the OSC
2
pin open. Figure 5.6 shows a
typical connection. The duty cycle of the external clock signal must be 45 to 55%.
OSC
1
External clock input
OSC
2
Open
Figure 5.6 Example of External Clock Input