Z8F042ASJ020EG2156 Datasheet, PDF (212/280 Pages) Zilog, Inc. – High-Performance 8-Bit Microcontrollers

Z8 Encore! XP^® F082A Series
Product Specification
197
Bit
Description (Continued)
[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.
100 = External clock signal on PB3 functions as system clock.
101 = Reserved.
110 = Reserved.
111 = Reserved.
PS022828-0413
P R E L I M I N A R Y Oscillator Control Register Definitions