MC68HC705 MOTOROLA [Motorola, Inc], MC68HC705 Datasheet - Page 72

• Manufacturer Part Number: MC68HC705
• Description: HCMOS Microcontroller Unit
• Manufacturer: MOTOROLA [Motorola, Inc]

Low-Power Modes
Technical Data
72
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
Figure 6-3. Non-Programmable COP Watchdog
CLEAR COP COUNTER
CLEAR I BIT IN CCR
STABILIZATION
INTERRUPT?
EXTERNAL
EXTERNAL
in Stop Mode (NCOPE = 1) Flowchart
Low-Power Modes
OR
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
MC68HC705C8A — Rev. 2.0
STABILIZATION
END OF
DELAY?
OR
NO
YES
MOTOROLA