s908ey8ad4cfjer Freescale Semiconductor, Inc, s908ey8ad4cfjer Datasheet - Page 231

• Manufacturer Part Number: s908ey8ad4cfjer
• Description: M68hc08 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

Freescale Semiconductor
PROGRAMMING
FROM
IS ENABLED)
DEBUGGING
CONDITIONS
AND FLASH
(IF FLASH
Table 19-1
VECTOR BLANK?
PTA1 = 0, RESET
MONITOR MODE
Figure 19-8. Simplified Monitor Mode Entry Flowchart
PTA0 = 1,
FORCED
MC68HC908EY16 • MC68HC908EY8 Data Sheet, Rev. 10
YES
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
PTA0 = 1, PTA1 = 0,
MONITOR MODE
PTB4 = 1, AND
PTB3 = 0?
NORMAL
YES
YES
SECURITY BYTES
CORRECT?
ARE ALL
NO
Monitor Module (MON)
USER MODE
INVALID
DISABLE FLASH
NO
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