Datasheet

Chapter 5 Resets, Interrupts, and System Configuration
MC9S08AC16 Series Data Sheet, Rev. 9
80 Freescale Semiconductor
5.9.10 System Options Register 2 (SOPT2)
This high page register contains bits to configure MCU specific features on the MC9S08AC16 Series
devices.
76543210
R
COPCLKS
1
0000000
W
Reset:10000000
= Unimplemented or Reserved
1
This bit can be written only one time after reset. Additional writes are ignored.
Figure 5-12. System Options Register 2 (SOPT2)
Table 5-14. SOPT2 Register Field Descriptions
Field Description
7
COPCLKS
COP Watchdog Clock Select — This write-once bit selects the clock source of the COP watchdog.
0 Internal 1-kHz clock is source to COP.
1 Bus clock is source to COP.