mc68hc05pl4b Freescale Semiconductor, Inc, mc68hc05pl4b Datasheet - Page 43

• Manufacturer Part Number: mc68hc05pl4b
• Description: Low-cost Single-chip Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

MC68HC05PL4
REV 2.0
Stop Internal Processor Clock,
Stop Internal Timer Clock,
and set IRQEN in MICSR
Stop External Oscillator,
Reset Start-up Delay
Clear I-Bit in CCR,
Keyboard
Interrupt?
Interrupt?
RESET?
External
External
N
N
STOP
N
IRQ
Y
Y
Y
Restart External Oscillator,
start Stabilization Delay
Freescale Semiconductor, Inc.
of Stabilization
For More Information On This Product,
Figure 6-1. STOP/WAIT Flowchart
N
Delay?
End
1. Fetch Reset Vector
2. Service Interrupt
or
a. Stack
b. Set I-Bit
c. Vector to Interrupt Routine
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Internal Processor Clock
OPERATING MODES
Y
April 30, 1998
Restart
GENERAL RELEASE SPECIFICATION
Stop Internal Processor Clock,
Internal Timer Clock Active
Y
Y
and set IRQEN in MICSR
Y
Y
External Oscillator Active
Y
Clear I-Bit in CCR,
Interrupt?
Keyboard
Interrupt?
Interrupt?
RESET?
Interrupt?
External
External
WAIT
Timer
16-bit
Timer
IRQ
and
8-bit
N
N
N
N
N
6-3