HD64F36024FX Datasheet, PDF (94/386 Pages) Renesas Technology Corp – Old Company Name in Catalogs and Other Documents

Section 5 Clock Pulse Generators
5.1.1 Connecting Crystal Resonator
Figure 5.3 shows a typical method of connecting a crystal resonator. An AT-cut parallel-resonance
crystal resonator should be used. Figure 5.4 shows the equivalent circuit of a crystal resonator. A
resonator having the characteristics given in table 5.1 should be used.
OSC ₁
OSC ₂
C₁
C₂
C₁ = C₂ = 12 pF ±20%
Figure 5.3 Typical Connection to Crystal Resonator
OSC₁
L_S
C_S
R_S
C₀
OSC₂
Figure 5.4 Equivalent Circuit of Crystal Resonator
Table 5.1 Crystal Resonator Parameters
Frequency (MHz)
R (max)
S
C₀ (max)
2
500 Ω
7 pF
4
120 Ω
7 pF
8
80 Ω
7 pF
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 = 30 pF ±10%
C₂ = 30 pF ±10%
Figure 5.5 Typical Connection to Ceramic Resonator
Rev. 4.00 Sep. 23, 2005 Page 66 of 354
REJ09B0025-0400