MC68HC705C4ACB MOTOROLA [Motorola, Inc], MC68HC705C4ACB Datasheet - Page 71

• Manufacturer Part Number: MC68HC705C4ACB
• Description: Microcontrollers
• Manufacturer: MOTOROLA [Motorola, Inc]

MC68HC705C4A • MC68HSC705C4A — Rev. 3.0
MOTOROLA
Figure 6-2. COP Watchdog in Stop Mode Flowchart (NCOPE = 1)
1. LOAD PC WITH RESET VECTOR
2. SERVICE INTERRUPT:
a. SAVE CPU REGISTERS ON STACK
b. SET I BIT IN CCR
c. LOAD PC WITH INTERRUPT VECTOR
TURN OFF INTERNAL OSCILLATOR
TURN ON INTERNAL OSCILLATOR
TURN ON INTERNAL CLOCK
NO
TURN OFF COP COUNTER
TURN ON COP WATCHDOG
CLEAR COP COUNTER
CLEAR I BIT IN CCR
STABILIZATION
INTERRUPT?
EXTERNAL
EXTERNAL
OR
Low-Power Modes
RESET?
END OF
DELAY?
STOP
NO
NO
YES
YES
YES
1. LOAD PC WITH RESET VECTOR
2. SERVICE INTERRUPT:
a. SAVE CPU REGISTERS ON STACK
b. SET I BIT IN CCR
c. LOAD PC WITH INTERRUPT VECTOR
TURN ON INTERNAL OSCILLATOR
TURN ON INTERNAL CLOCK
TURN ON COP WATCHDOG
CLEAR COP COUNTER
STABILIZATION
END OF
DELAY?
OR
NO
Low-Power Modes
Technical Data
YES
Wait Mode
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