MC80F0204 Datasheet, PDF (47/126 Pages) List of Unclassifed Manufacturers – 8-BIT SINGLE-CHIP MICROCONTROLLERS

Preliminary
MC80F0104/0204
:
Source clock
BIT overflow
Binary-counter 1
WDTR
WDTIF interrupt
WDT reset
2
3
0
1
2
Counter
Clear
n
3
WDTR ← “1000_0011_B”
3
0
Counter
Clear
Match
Detect
reset
Figure 12-3 Watchdog timer Timing
If the watchdog timer output becomes active, a reset is gen-
erated, which drives the RESET pin low to reset the inter-
nal hardware.
The main clock oscillator also turns on when a watchdog
timer reset is generated in sub clock mode.
Mar. 2005 Ver 0.2
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