mc68hc908gr8a Freescale Semiconductor, Inc, mc68hc908gr8a Datasheet - Page 222

• Manufacturer Part Number: mc68hc908gr8a
• Description: M68hc08 Microcontrollers Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

Development Support
222
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
MC68HC908GR8A • MC68HC908GR4A Data Sheet, Rev. 5
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
PTB0 = 1, AND
PTB1 = 0?
NORMAL
YES
YES
SECURITY BYTES
CORRECT?
ARE ALL
NO
Freescale Semiconductor
USER MODE
INVALID
DISABLE FLASH
NO