MC68HC05E5 Datasheet, PDF (36/140 Pages) Freescale Semiconductor, Inc – General Release Specification

Interrupts
Freescale Semiconductor, Inc.
STOP
STOP OSCILLATOR
AND ALL CLOCKS.
CLEAR I BIT.
WAIT
OSCILLATOR ACTIVE.
TIMER CLOCK ACTIVE.
PROCESSOR CLOCKS
STOPPED.
N
RESET?
N
RESET?
EXTERNAL
Y
INTERRUPT
N
(IRQ)?
Y
TURN ON OSCILLATOR.
WAIT FOR TIME
DELAY TO STABILIZE.
1. FETCH RESET
VECTOR OR
2. SERVICE
INTERRUPT
A. STACK
B. SET I BIT
C. VECTOR TO
INTERRUPT
ROUTINE
Y
EXTERNAL
N
INTERRUPT
(IRQ)?
Y
TIMER
INTERNAL
N
YINTERRUPT?
RESTART
PROCESSOR CLOCK.
1. FETCH RESET
VECTOR OR
2. SERVICE
INTERRUPT
A. STACK
B. SET I BIT
C. VECTOR TO
INTERRUPT
ROUTINE
Y
CPI, SSI, OR M-BUS N
INTERNAL
INTERRUPT?
Y
Figure 4-2. STOP/WAIT Flowcharts
General Release Specification
Interrupts
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MC68HC05E5 — Rev. 1.0