Z8F0830HH020SG Datasheet, PDF (173/257 Pages) Zilog, Inc. – High-Performance 8-Bit Microcontrollers

Z8 Encore!^® F0830 Series
Product Specification
155
Bit
Description (Continued)
[4]
Primary Oscillator Failure Detection Enable
POFEN 1 = Failure detection and recovery of primary oscillator is enabled.
0 = Failure detection and recovery of primary oscillator is disabled.
[3]
Watchdog Timer Oscillator Failure Detection Enable
WDFEN 1 = Failure detection of Watchdog Timer Oscillator is enabled.
0 = Failure detection of Watchdog Timer Oscillator is disabled.
[2:0]
System Clock Oscillator Select
SCKSEL 000 = Internal Precision Oscillator functions as system clock at 5.53MHz.
001 = Internal Precision Oscillator functions as system clock at 32 kHz.
010 = Crystal oscillator or external RC oscillator functions as system clock.
011 = Watchdog Timer Oscillator functions as system clock.
100 = External clock signal on PB3 functions as system clock.
101 = Reserved.
110 = Reserved.
111 = Reserved.
PS025113-1212
Oscillator Control Register Definitions