XC68HC705JJ7 Motorola, XC68HC705JJ7 Datasheet - Page 78

• Manufacturer Part Number: XC68HC705JJ7
• Description: MICROCONTROLLER
• Manufacturer: Motorola

Operating Modes
Advance Information
78
CLEAR CTOF, RTIF, CTOFE, AND RTIE BITS IN TSCR.
TURN OFF INTERNAL LOW-POWER OSCILLATOR.
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.
CLEAR ICIE, OCIE, AND TOIE BITS IN TCR.
CLEAR ICF, OCF, AND TOF BITS IN TSR.
DISABLE EXTERNAL PIN OSCILLATOR.
RESET STABILIZATION DELAY TIMER.
TURN ON SELECTED OSCILLATOR.
YES
TURN ON CPU CLOCK.
SET IRQE BIT IN ISCR.
CLEAR I BIT IN CCR.
IN MOR SET?
STABILIZATION
INTERRUPT?
EXTERNAL
EXTERNAL
OR
SWAIT BIT
RESET?
END OF
DELAY?
STOP
NO
NO
NO
NO
Figure 6-2. Stop/Wait/Halt Flowchart
YES
YES
YES
Operating Modes
YES
YES
YES
YES
YES
YES
YES
TURN OFF CPU CLOCK.
KEEP OTHER MODULE
SET IRQE BIT IN ISCR.
CLEAR I BIT IN CCR.
CLOCKS ACTIVE.
INTERRUPT?
INTERRUPT?
EXTERNAL
EXTERNAL
INTERRUPT?
INTERRUPT?
INTERRUPT?
ANALOG
RESET?
RESET?
TIMER
PROG.
TIMER
CORE
HALT
SIOP
COP
MC68HC705JJ7 • MC68HC705JP7 — REV 4
NO
NO
NO
NO
NO
NO
NO
YES
YES
YES
YES
YES
YES
YES
TURN OFF CPU CLOCK.
KEEP OTHER MODULE
SET IRQE BIT IN ISCR.
CLEAR I BIT IN CCR.
CLOCKS ACTIVE.
INTERRUPT?
INTERRUPT?
EXTERNAL
EXTERNAL
INTERRUPT?
INTERRUPT?
INTERRUPT?
ANALOG
RESET?
RESET?
WAIT
TIMER
PROG.
TIMER
CORE
SIOP
COP
NO
NO
NO
NO
NO
NO
NO
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