MC68HC05RC8 Datasheet, PDF (56/122 Pages) Freescale Semiconductor, Inc – General Release Specification

Freescale Semiconductor, Inc.
Low-Power Modes
STOP
STOP OSCILLATOR
AND ALL CLOCKS.
CLEAR I BIT.
WAIT
OSCILLATOR ACTIVE.
IR TIMER CLOCK ACTIVE.
CORE TIMER CLOCK ACTIVE.
PROCESSOR CLOCKS
STOPPED.
N
RESET
OR
LPRST
EXTERNAL
Y
INTERRUPT
(PTB KEYSCAN PULLUPS)
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
RESET
N
OR
LPRST
Y
EXTERNAL
INTERRUPT
N
(PTB KEYSCAN PULLUPS)
(IRQ)
Y
IR TIMER
INTERNAL
N
YINTERRUPT
RESTART
PROCESSOR CLOCK.
Y
CORE TIMER
INTERNAL
N
INTERRUPT
Y
1. FETCH RESET
VECTOR OR
2. SERVICE
INTERRUPT
A. STACK
B. SET I BIT
C. VECTOR TO
INTERRUPT
ROUTINE
Figure 6-2. Stop/Wait Flowchart
General Release Specification
MC68HC05RC16 — Rev. 3.0
Low-Power Modes
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