MC68HC05P4A View Datasheet(PDF) - Advanced Analogic Technologies

Part Name

Description

MFG CO.

MC68HC05P4A

M68HC05 Microcontrollers

Advanced Analogic Technologies 

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Low-Power Modes

STOP

WAIT

STOP

TO HALT

MASK

N

STOP EXTERNAL OSCILLATOR

STOP INTERNAL TIMER CLOCK

RESET STARTUP DELAY

STOP INTERNAL PROCESSOR

CLOCK

CLEAR I-BIT IN CCR

EXTERNAL OSCILLATOR

ACTIVE AND

INTERNAL TIMER

CLOCK ACTIVE

STOP INTERNAL

PROCESSOR CLOCK,

CLEAR I-BIT IN CCR

EXTERNAL Y

RESET?

N

IRQ

EXTERNAL

INTERRUPT?

N

Y

RESTART EXTERNAL

OSCILLATOR, RESTART

STABILIZATION DELAY

END OF

Y

STABILIZATION

DELAY?

RESTART INTERNAL

PROCESSOR CLOCK

Y EXTERNAL

RESET?

N

IRQ

Y EXTERNAL

INTERRUPT?

N

TIMER

Y

INTERNAL

INTERRUPT?

N

COP

Y

INTERNAL

RESET?

N

1. FETCH RESET VECTOR

OR

2. SERVICE INTERRUPT

a. STACK

b. SET I BIT

c. VECTOR TO INTERRUPT ROUTINE

Figure 6-1. STOP/WAIT Flowchart

MC68HC05P4A Data Sheet, Rev. 7.1

30

Freescale Semiconductor

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