HD64F3664FPV Datasheet, PDF (109/446 Pages) Renesas Technology Corp – Old Company Name in Catalogs and Other Documents

Table 5.1 Crystal Resonator Parameters
Frequency (MHz)
R (max)
S
C (max)
0
2
500 Ω
7 pF
4
120 Ω
7 pF
Section 5 Clock Pulse Generators
8
80 Ω
7 pF
10
60 Ω
7 pF
16
50 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 = 30 pF ±10%
C₂ = 30 pF ±10%
Note: Capacitances are reference values.
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. 6.00 Mar. 24, 2006 Page 79 of 412
REJ09B0142-0600