MC705P6A Motorola, MC705P6A Datasheet - Page 29

• Manufacturer Part Number: MC705P6A
• Description: Microcontrollers
• Manufacturer: Motorola

Freescale Semiconductor
STOP INTERNAL TIMER CLOCK,
STOP EXTERNAL OSCILLATOR,
RESET STARTUP DELAY
PROCESSOR CLOCK,
CLEAR I BIT IN CCR
STOP INTERNAL
INTERRUPT?
EXTERNAL
EXTERNAL
BIT SET?
RESET?
N
N
N
SWAIT
STOP
MOR
IRQ
RESTART EXTERNAL OSCILLATOR,
Y
Y
Y
START STABILIZATION DELAY
MC68HC705P6A Advance Information Data Sheet, Rev. 2.1
OF STABILIZATION
N
DELAY?
END
1.
2.
Figure 3-2. STOP/WAIT Flowcharts
FETCH RESET VECTOR
SERVICE INTERRUPT
A. STACK
B. SET I BIT
C. VECTOR TO INTERRUPT ROUTINE
INTERNAL PROCESSOR CLOCK
OR
Y
RESTART
INTERNAL TIMER CLOCK ACTIVE
EXTERNAL OSCILLATOR ACTIVE
Y
Y
Y
Y
PROCESSOR CLOCK,
CLEAR I BIT IN CCR
STOP INTERNAL
INTERRUPT?
INTERRUPT?
EXTERNAL
EXTERNAL
INTERNAL
INTERNAL
RESET?
RESET?
TIMER
HALT
COP
AND
IRQ
N
N
N
N
INTERNAL TIMER CLOCK ACTIVE
EXTERNAL OSCILLATOR ACTIVE
Y
Y
Y
Y
PROCESSOR CLOCK,
CLEAR I BIT IN CCR
STOP INTERNAL
INTERRUPT?
INTERRUPT?
EXTERNAL
EXTERNAL
INTERNAL
INTERNAL
RESET?
RESET?
TIMER
WAIT
AND
COP
IRQ
N
N
N
N
Low-Power Modes
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