MCMC68HC05L16 Freescale Semiconductor, Inc, MCMC68HC05L16 Datasheet - Page 49

• Manufacturer Part Number: MCMC68HC05L16
• Description: M68hc05 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

Freescale Semiconductor
N
INTERRUPT
INTERRUPT
INTERRUPT
INTERRUPT ‡
EXTERNAL
TIMEBASE
N
N
SSPI
N
IRQ?
KWI
?
?
?
†
TURN ON OSCILLATOR
N
STOP OSCILLATOR
Y
Y
Y
Y
AND ALL CLOCKS
1. FETCH RESET
2. SERVICE
WAIT FOR TIME
EXCEPT XOSC
VECTOR OR
INTERRUPT
A. STACK
B. SET I BIT
C. VECTOR TO
CLEAR I BIT
IF FOSC = 1
INTERRUPT
ROUTINE
MC68HC05L16 • MC68HC705L16 Data Sheet, Rev. 4.1
RESET?
OSC
STOP
OSC
Y
Figure 5-2. Stop/Wait Flowcharts
TIMER CLOCK ACTIVE
PROCESSOR CLOCKS
OSCILLATOR ACTIVE
PROCESSOR CLOCK
1. FETCH RESET
2. SERVICE
A. STACK
B. SET I BIT
C. VECTOR TO
VECTOR OR
INTERRUPT
CLEAR I BIT
STOPPED
INTERRUPT
ROUTINE
RESTART
RESET?
Y
WAIT
N
Notes:
†
‡
Y
Y
Y
Y
Y
Y
When TBCLK = 0
Slave Mode Only
INTERRUPT
INTERRUPT
INTERRUPT
INTERRUPT
INTERRUPT
INTERRUPT
EXTERNAL
TIMEBASE
TIMER 1
TIMER 2
SSPI
IRQ?
KWI
?
?
?
?
?
N
N
N
N
N
N
Wait Mode
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