MC68HC708XL36 FREESCALE [Freescale Semiconductor, Inc], MC68HC708XL36 Datasheet - Page 82

• Manufacturer Part Number: MC68HC708XL36
• Description: HCMOS Microcontroller Unit
• Manufacturer: FREESCALE [Freescale Semiconductor, Inc]

Low-Power Modes
Exiting Stop Mode
MC68HC708XL36
82
NOTE:
The following events restart the system clocks and load the program
counter with the reset vector or with an interrupt vector:
Upon exit from stop mode, the system clocks begin running after an
oscillator stabilization delay. A 12-bit stop recovery counter inhibits the
system clocks for 4096 CGMXCLK cycles after the reset or external
interrupt.
The short stop recovery bit, SSREC, in the configuration register
controls the oscillator stabilization delay during stop recovery. Setting
SSREC reduces stop recovery time from 4096 CGMXCLK cycles to 32
CGMXCLK cycles.
Use the full stop recovery time (SSREC = 0) in applications that use an
external crystal.
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Freescale Semiconductor, Inc.
For More Information On This Product,
External reset — A logic 0 on the RST pin resets the MCU and
loads the program counter with the contents of locations $FFFE
and $FFFF.
External interrupt — A high-to-low transition on an external
interrupt pin loads the program counter with the contents of
locations:
– $FFFA and $FFFB (IRQ1 pin)
– $FFE0 and $FFE1 (IRQ2 pin)
– $FFDE and $FFDF (keyboard interrupt pins)
Low-voltage inhibit (LVI) reset — A power supply voltage below
the LVI
with the contents of locations $FFFE and $FFFF.
Break interrupt — A break interrupt loads the program counter
with the contents of locations $FFFC and $FFFD.
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tripf
Low-Power Modes
voltage resets the MCU and loads the program counter
MOTOROLA
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