h8s-2635 Renesas Electronics Corporation., h8s-2635 Datasheet - Page 993
h8s-2635
Manufacturer Part Number
h8s-2635
Description
Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2600 Series
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.H8S-2635.pdf
(1547 pages)
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Crystal Resonator: Figure 22A-3 shows the equivalent circuit of the crystal resonator. Use a
crystal resonator that has the characteristics shown in table 22A-3. The crystal resonator frequency
should not exceed 20 MHz.
Table 22A-3 Crystal Resonator Parameters
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 22A-4.
When designing the board, place the crystal resonator and its load capacitors as close as possible
to the XTAL and EXTAL pins.
Frequency (MHz)
R
C
S
0
max (pF)
max ( )
Section 22A Clock Pulse Generator (H8S/2636 Group, H8S/2638 Group, H8S/2630 Group)
Figure 22A-3 Crystal Resonator Equivalent Circuit
Figure 22A-4 Example of Incorrect Board Design
4
120
7
8
80
7
Rev. 6.00 Feb 22, 2005 page 933 of 1484
12
60
7
16
50
7
REJ09B0103-0600
20
40
7
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