HD6433682 ETC, HD6433682 Datasheet - Page 100

• Manufacturer Part Number: HD6433682
• Description: Renesas 16-Bit Single-Chip Microcomputer H8 Family/H8/300H Tiny Series
• Manufacturer: ETC

5.1
Clock pulses can be supplied to the system clock divider either by connecting a crystal or ceramic
resonator, or by providing external clock input. Figure 5.2 shows a block diagram of the system
clock generator.
5.1.1
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.
Rev. 3.00, 05/03, page 70 of 472
System Clock Generator
Connecting Crystal Resonator
OSC
Figure 5.2 Block Diagram of System Clock Generator
LPM: Low-power mode (standby mode, subactive mode, subsleep mode)
Figure 5.3 Typical Connection to Crystal Resonator
Figure 5.4 Equivalent Circuit of Crystal Resonator
1
OSC
OSC
OSC
OSC
1
2
2
1
L
S
C
S
C
C
1
2
C
0
C = C = 12 pF ±20%
1
R
2
S
LPM
OSC
2