User manual

PIC10F200/202/204/206
DS41239A-page 32 Preliminary  2004 Microchip Technology Inc.
To change the prescaler from the WDT to the Timer0
module, use the sequence shown in Example 6-2. This
sequence must be used even if the WDT is disabled. A
CLRWDT instruction should be executed before
switching the prescaler.
EXAMPLE 6-2: CHANGING PRESCALER
(WDT→TIMER0)
FIGURE 6-5: BLOCK DIAGRAM OF THE TIMER0/WDT PRESCALER
CLRWDT ;Clear WDT and
;prescaler
MOVLW ‘xxxx0xxx’ ;Select TMR0, new
;prescale value and
;clock source
OPTION
TCY (= FOSC/4)
Sync
2
Cycles
TMR0 reg
8-bit Prescaler
8-to-1MUX