BAT32G1x9 user manual | Chapter 14 Watchdog timer
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Rev.1.02
Figure 14-1 Diagram of Watchdog Timer
clock
input
control
circuit
interval
counter
(17
bits)
selector
count clear
signal
window size check
The window size
determines the
signal
overflow signal
reset
output
control
circuit
internal reset
signal
interval time
interval time control circuit
(count value overflow time x3/4
+1/2fIL)
option bytes (000C0H)
WDTINT
option bytes (000C0H)
WDCS2~WDCS0
option bytes (000C0H)
WINDOW1 and WINDOW0
option bytes (000C0H)
WDTON
watchdog timer
enable register
(WDTE)
circuit detects written
value other than
"ACH" into WDTE
Internal Bus
f
IL
/2
6
~f
IL
/2
16
f
IL
Note: f
IL
: The clock frequency of the low-speed internal oscillator