MC908GR8CDWE Datasheet, PDF (57/408 Pages) Freescale Semiconductor, Inc – M68HC08 Microcontrollers

Freescale Semiconductor, Inc.
Low Power Modes
Exiting Wait Mode
3.15 Exiting Wait Mode
These events restart the CPU clock and load the program counter with
the reset vector or with an interrupt vector:
• 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 (IRQ pin) loads the program counter with the contents
of locations: $FFFA and $FFFB; IRQ pin.
• Break interrupt — A break interrupt loads the program counter
with the contents of $FFFC and $FFFD.
• Computer operating properly module (COP) reset — A timeout of
the COP counter resets the MCU and loads the program counter
with the contents of $FFFE and $FFFF.
• Low-voltage inhibit module (LVI) reset — A power supply voltage
below the V_tripf voltage resets the MCU and loads the program
counter with the contents of locations $FFFE and $FFFF.
• Clock generator module (CGM) interrupt — A CPU interrupt
request from the phase-locked loop (PLL) loads the program
counter with the contents of $FFF8 and $FFF9.
• Keyboard module (KBI) interrupt — A CPU interrupt request from
the KBI module loads the program counter with the contents of
$FFDE and $FFDF.
• Timer 1 interface module (TIM1) interrupt — A CPU interrupt
request from the TIM1 loads the program counter with the
contents of:
– $FFF2 and $FFF3; TIM1 overflow
– $FFF4 and $FFF5; TIM1 channel 1
– $FFF6 and $FFF7; TIM1 channel 0
• Timer 2 interface module (TIM2) interrupt — A CPU interrupt
request from the TIM2 loads the program counter with the
contents of:
MC68HC908GR8 — Rev 4.0
MOTOROLA
Low Power Modes
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Technical Data
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