mc68hc908gr8b Freescale Semiconductor, Inc, mc68hc908gr8b Datasheet - Page 220

• Manufacturer Part Number: mc68hc908gr8b
• Description: M68hc08 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

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220
PROGRAMMING
FROM
IS ENABLED)
DEBUGGING
CONDITIONS
AND FLASH
(IF FLASH
Table 18-1
VECTOR BLANK?
PTA1 = 0, RESET
MONITOR MODE
Figure 18-9. Simplified Monitor Mode Entry Flowchart
PTA0 = 1,
FORCED
YES
YES
MC68HC908GR8B Data Sheet, Rev. 3.0
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
PTB0 = 1, AND
PTB1 = 0?
NORMAL
YES
YES
SECURITY BYTES
CORRECT?
ARE ALL
NO
Freescale Semiconductor
USER MODE
INVALID
DISABLE FLASH
NO