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MC68HC705P9CS Datasheet(PDF) 77 Page - Freescale Semiconductor, Inc

Part # MC68HC705P9CS
Description  Microcontrollers
PDF  160 Pages
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Manufacturer  FREESCALE [Freescale Semiconductor, Inc]
Direct Link  http://www.freescale.com
Logo FREESCALE - Freescale Semiconductor, Inc

MC68HC705P9CS Datasheet(HTML) 77 Page - Freescale Semiconductor, Inc

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Low Power Modes
Stop Mode
MC68HC705P9 — Rev. 4.0
Technical Data
MOTOROLA
Low Power Modes
77
Figure 6-2 shows the sequence of events caused by the STOP
instruction.
Figure 6-2. STOP Instruction Flowchart
STOP
CLEAR I BIT IN CCR
RESET?
YES
TURN ON OSCILLATOR
EXTERNAL
NO
(1) LOAD PC WITH RESET VECTOR
OR
(2) SERVICE INTERRUPT
a. SAVE CPU REGISTERS ON STACK
b. SET I BIT IN CCR
c. LOAD PC WITH INTERRUPT VECTOR
DELAY 4064 CYCLES
TO STABILIZE
INTERRUPT?
CLEAR TIMER INTERRUPT FLAGS AND TIMER INTERRUPT ENABLE BITS
CLEAR TIMER PRESCALER
TURN OFF OSCILLATOR
YES
NO
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com



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