MC9S08GB60A Datasheet, PDF (108/302 Pages) Freescale Semiconductor, Inc – HCS08 Microcontrollers

Internal Clock Generator (S08ICGV2)
pin is not used by the ICG. The oscillator is capable of being configured to provide a higher amplitude
output for improved noise immunity. This mode of operation is selected by HGO = 1.
7.2.3 External Clock Connections
If an external clock is used, then the pins are connected as shown in Figure 7-4.
ICG
EXTAL
CLOCK INPUT
V_SS
XTAL
NOT CONNECTED
Figure 7-4. External Clock Connections
7.2.4 External Crystal/Resonator Connections
If an external crystal/resonator frequency reference is used, then the pins are connected as shown in
Figure 7-5. Recommended component values are listed in Appendix A, “Electrical Characteristics.”
ICG
EXTAL
V_SS
XTAL
R_S
C₁
C₂
R_F
CRYSTAL OR RESONATOR
Figure 7-5. External Frequency Reference Connection
MC9S08GB60A Data Sheet, Rev. 2
108
Freescale Semiconductor