HD6412340 HITACHI [Hitachi Semiconductor], HD6412340 Datasheet - Page 623

• Manufacturer Part Number: HD6412340
• Description: H8S/2345 F-ZTAT Hardware Manual
• Manufacturer: HITACHI [Hitachi Semiconductor]

Table 18.3 Crystal Resonator Parameters
Frequency (MHz)
R
C
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 18.4.
When designing the board, place the crystal resonator and its load capacitors as close as possible
to the XTAL and EXTAL pins.
612
S
0
max (pF)
max ( )
Figure 18.4 Example of Incorrect Board Design
Avoid
2
500
7
C
C
L2
L1
Signal A Signal B
4
120
7
8
80
7
XTAL
EXTAL
H8S/2345
12
60
7
16
50
7
20
40
7