HD6413003RVF RENESAS [Renesas Technology Corp], HD6413003RVF Datasheet - Page 524

• Manufacturer Part Number: HD6413003RVF
• Description: microcontroller (MCU)
• Manufacturer: RENESAS [Renesas Technology Corp]

16.2 Oscillator Circuit
Clock pulses can be supplied by connecting a crystal resonator, or by input of an external clock
signal.
16.2.1 Connecting a Crystal Resonator
Circuit Configuration: A crystal resonator can be connected as in the example in figure 16-2.
The damping resistance Rd should be selected according to table 16-1. An AT-cut parallel-
resonance crystal should be used.
Table 16-1 Damping Resistance Value
Frequency (MHz)
Rd (Ω)
Crystal Resonator: Figure 16-3 shows an equivalent circuit of the crystal resonator. The crystal
resonator should have the characteristics listed in table 16-2.
XTAL
Figure 16-2 Connection of Crystal Resonator (Example)
EXTAL
XTAL
Figure 16-3 Crystal Resonator Equivalent Circuit
2
1 k
L
4
500
C
L
C
C
L1
L2
506
8
200
C
O
10
70
C
AT-cut parallel-resonance type
L1
= C
Rs
12
0
L2
= 10 pF to 22 pF
16
0
20
0
EXTAL
24
0