H8S2148 Datasheet, PDF (779/1177 Pages) Renesas Technology Corp – Renesas 16-Bit Single-Chip Microcomputer H8S Family/H8S/2100 Series

Table 24.3 Crystal Resonator Parameters
Frequency (MHz)
2
4
8
R_S max (Ω)
C₀ max (pF)
500
120
80
7
7
7
Section 24 Clock Pulse Generator
10
12
16
20
70
60
50
40
7
7
7
7
Note on Board Design
When a crystal resonator is connected, the following points should be noted.
Other signal lines should be routed away from the oscillator circuit to prevent induction from
interfering with correct oscillation. See figure 24.4.
When designing the board, place the crystal resonator and its load capacitors as close as possible
to the XTAL and EXTAL pins.
Avoid
Signal A Signal B
C_L2
This LSI
XTAL
EXTAL
C_L1
Figure 24.4 Example of Incorrect Board Design
Rev. 4.00 Sep 27, 2006 page 735 of 1130
REJ09B0327-0400