HD64F3687HV Datasheet, PDF (105/538 Pages) Renesas Technology Corp – Renesas 16-Bit Single-Chip Microcomputer H8 Family/H8/300H Tiny Series

Table 5.1 Crystal Resonator Parameters
Frequency (MHz)
R (max)
S
C (max)
0
2
500 Ω
7 pF
4
120 Ω
7 pF
8
80 Ω
7 pF
Section 5 Clock Pulse Generators
10
60 Ω
7 pF
16
50 Ω
7 pF
20
40 Ω
7 pF
5.1.2 Connecting Ceramic Resonator
Figure 5.5 shows a typical method of connecting a ceramic resonator.
OSC₁
OSC₂
C₁
C₂
C₁ = 5 to 30 pF
C₂ = 5 to 30 pF
Figure 5.5 Typical Connection to Ceramic Resonator
5.1.3 External Clock Input Method
Connect an external clock signal to pin OSC₁, and leave pin OSC₂ open. Figure 5.6 shows a typical
connection. The duty cycle of the external clock signal must be 45 to 55%.
OSC₁
OSC ₂
Open
External clock input
Figure 5.6 Example of External Clock Input
Rev.5.00 Nov. 02, 2005 Page 71 of 500
REJ09B0027-0500