HD64F3670 Datasheet, PDF (86/323 Pages) Renesas Technology Corp – Hitachi Single-Chip Microcomputer

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_S (max)
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
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. 2.0, 03/02, page 62 of 298