
How to use the
Watchdog Timer of the TriCore
2 of 17
AP3219 Rel.02
1
Overview................................................................................................................3
2
2.1
2.2
2.3
WDT Initialization..................................................................................................4
Default values.........................................................................................................4
Time Out Mode.......................................................................................................4
Servicing the WDT..................................................................................................5
3
3.1
3.2
3.3
The access to the WDT Registers .......................................................................6
Password access....................................................................................................6
Modify access.........................................................................................................7
Wrong register access ............................................................................................8
4
4.1
4.2
4.3
How to change the WDT Registers......................................................................9
How to change the WDTCON0...............................................................................9
How to change the WDTCON1.............................................................................10
Normal Timer Period.............................................................................................10
5
Using the WDT ....................................................................................................11
6
6.1
6.2
6.3
Extended Security Thoughts .............................................................................12
Multiple Service Sequences..................................................................................12
Single Service Sequence......................................................................................13
Password Access using Extended Security Thoughts ..........................................14
7
WDT Register Overview......................................................................................15
AP3219 ApNote – Revision History
Actual Revision : Rel.02 Previous Revision: Rel.01
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Logo changed to Infineon
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