XC68HC05P18A Motorola, XC68HC05P18A Datasheet - Page 51

• Manufacturer Part Number: XC68HC05P18A
• Description: HCMOS Microcontroller Unit
• Manufacturer: Motorola

MC68HC05P18A
MOTOROLA
STOP INTERNAL TIMER CLOCK
STOP EXTERNAL OSCILLATOR
STOP RC OSCILLATOR
RESET STARTUP DELAY
PROCESSOR CLOCK
CLEAR I BIT IN CCR
STOP INTERNAL
TO HALT MASK
OR EXTERNAL
INTERRUPT?
EXTERNAL
OPTION?
RESET?
N
N
N
STOP
STOP
IRQ
LVR
Y
Y
Y
START STABILIZATION DELAY
Figure 6-1. Stop, Halt, and Wait Modes Flowchart
RESTART EXTERNAL
OF STABILIZATION
OSCILLATOR
N
DELAY?
END
1.
2.
FETCH RESET VECTOR
OR
SERVICE INTERRUPT
A. STACK
B. SET I BIT
C. VECTOR TO INTERRUPT ROUTINE
PROCESSOR CLOCK
RESTART INTERNAL
Y
Operating Modes
INTERNAL TIMER CLOCK ACTIVE
EXTERNAL OSCILLATOR ACTIVE
Y
Y
Y
Y
STOP RC OSCILLATOR
PROCESSOR CLOCK
CLEAR I BIT IN CCR
STOP INTERNAL
OR EXTERNAL
INTERRUPT?
INTERRUPT?
EXTERNAL
INTERNAL
INTERNAL
RESET?
RESET?
TIMER
HALT
AND
IRQ
COP
LVR
N
N
N
N
INTERNAL TIMER CLOCK ACTIVE
EXTERNAL OSCILLATOR ACTIVE
Y
Y
Y
Y
PROCESSOR CLOCK
CLEAR I BIT IN CCR
STOP INTERNAL
OR EXTERNAL
INTERRUPT?
INTERRUPT?
EXTERNAL
INTERNAL
INTERNAL
RESET?
RESET?
TIMER
WAIT
AND
COP
LVR
IRQ
N
N
N
N
Low-Power Modes
Operating Modes
Technical Data
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