MC68HC08GP32A Datasheet, PDF (224/258 Pages) Freescale Semiconductor, Inc – Microcontrollers

Development Support
POR RESET
CONDITIONS
FROM Table 19-2
NORMAL
USER MODE
NO
IRQ = V_TST?
YES
PTA0 = 1,
NO
PTC0 = 1, PTC1 = 0,
AND PTA7 = 0?
YES
NORMAL
MONITOR MODE
INVALID
USER MODE
HOST SENDS
8 SECURITY BYTES
IS RESET
POR?
NO
YES
YES
ARE ALL
SECURITY BYTES
NO
CORRECT?
ENABLE ROM
DISABLE ROM
MONITOR MODE ENTRY
DEBUGGING
EXECUTE
MONITOR CODE
YES
DOES RESET
NO
OCCUR?
Figure 19-8. Simplified Monitor Mode Entry Flowchart
MC68HC08GP32A • MC68HC08GP16A Data Sheet, Rev. 1.0
224
Freescale Semiconductor