Datasheet

Section number Title Page
22.3.1.2 Refreshing the Watchdog...............................................................................................................584
22.3.1.3 Example code: Refreshing the Watchdog......................................................................................585
22.3.2 Configuring the Watchdog...............................................................................................................................585
22.3.2.1 Reconfiguring the Watchdog.........................................................................................................585
22.3.2.2 Unlocking the Watchdog...............................................................................................................586
22.3.2.3 Example code: Reconfiguring the Watchdog................................................................................586
22.3.3 Clock source.....................................................................................................................................................586
22.3.4 Using interrupts to delay resets........................................................................................................................588
22.3.5 Backup reset.....................................................................................................................................................588
22.3.6 Functionality in debug and low-power modes.................................................................................................588
22.3.7 Fast testing of the watchdog.............................................................................................................................589
22.3.7.1 Testing each byte of the counter....................................................................................................589
22.3.7.2 Entering user mode........................................................................................................................590
Chapter 23
Development support
23.1 Introduction.....................................................................................................................................................................591
23.1.1 Forcing active background...............................................................................................................................591
23.1.2 Features............................................................................................................................................................591
23.2 Background debug controller (BDC)..............................................................................................................................592
23.2.1 BKGD pin description.....................................................................................................................................593
23.2.2 Communication details....................................................................................................................................594
23.2.3 BDC commands...............................................................................................................................................596
23.2.4 BDC hardware breakpoint...............................................................................................................................599
23.3 On-chip debug system (DBG)........................................................................................................................................599
23.3.1 Comparators A and B.......................................................................................................................................600
23.3.2 Bus capture information and FIFO operation..................................................................................................600
23.3.3 Change-of-flow information............................................................................................................................601
23.3.4 Tag vs. force breakpoints and triggers.............................................................................................................602
23.3.5 Trigger modes..................................................................................................................................................603
MC9S08PA60 Reference Manual, Rev. 1, 9/2012
Freescale Semiconductor, Inc. 29