TIP670 User Manual Issue 1.3
Page 12 of 19
5.2.4 Output
Watchdog
Counter/Timer 3 and Port C of the Z8536 can be programmed to implement a watchdog for the
outputs. Any software access to the Z8536 will retrigger Timer 3 in the Z8536. If the programmed time
expires without a software access all outputs go into the ’off’ state (the maximum programmable time
is approx. 30ms). However they will return to their original state, when the TIP670 is accessed again
by the software.
The watchdog is disabled after power-up or reset.
