s908qy2ad1vdwer Freescale Semiconductor, Inc, s908qy2ad1vdwer Datasheet - Page 145

• Manufacturer Part Number: s908qy2ad1vdwer
• Description: Mc68hc908qt4a Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

Freescale Semiconductor
PROGRAMMING
FROM
IS ENABLED)
DEBUGGING
CONDITIONS
AND FLASH
(IF FLASH
Table 15-1
MONITOR MODE
RESET VECTOR
Figure 15-9. Simplified Monitor Mode Entry Flowchart
PTA0 = 1,
FORCED
BLANK?
YES
MC68HC908QYA/QTA Family Data Sheet, Rev. 2
YES
NO
NO
MONITOR MODE ENTRY
8 SECURITY BYTES
MONITOR CODE
DOES RESET
HOST SENDS
USER MODE
IS RESET
EXECUTE
POR RESET
IRQ = V
OCCUR?
NORMAL
POR?
NO
TST
?
YES
NO
YES
ENABLE FLASH
MONITOR MODE
PTA1 = 1, AND
PTA4 = 0?
PTA0 = 1,
NORMAL
YES
YES
SECURITY BYTES
CORRECT?
ARE ALL
NO
Monitor Module (MON)
USER MODE
INVALID
DISABLE FLASH
NO
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