mc68hc08az60 Freescale Semiconductor, Inc, mc68hc08az60 Datasheet - Page 164

• Manufacturer Part Number: mc68hc08az60
• Description: M68hc08 Family Of 8-bit Microcontroller Units Mcus
• Manufacturer: Freescale Semiconductor, Inc

Low-Voltage Inhibit (L VI)
LVI Interrupts
Low-Power Modes
Wait Mode
Stop Mode
MC68HC08AZ60 — Rev 1.0
164
The LVI module does not generate interrupt requests.
The WAIT and STOP instructions put the MCU in low
power-consumption standby modes.
With the LVIPWR bit in the mask option register programmed to logic 1,
the LVI module is active after a WAIT instruction.
With the LVIRST bit in the mask option register programmed to logic 1,
the LVI module can generate a reset and bring the MCU out of wait
mode.
With the LVISTOP and LVIPWR bits in the mask option register
programmed to a logic 1, the LVI module will be active after a STOP
instruction. Because CPU clocks are disabled during stop mode, the LVI
trip must bypass the digital filter to generate a reset and bring the MCU
out of stop.
With the LVIPWR bit in the mask option register programmed to logic 1
and the LVISTOP bit at a logic 0, the LVI module will be inactive after a
STOP instruction.
Note that the LVI feature is intended to provide the safe shutdown
of the microcontroller and thus protection of related circuitry prior
to any application V
level. Is is not intended that users operate the microcontroller at
lower than the specified operating voltage, V
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Low-Voltage Inhibit (LVI)
DD
voltage collapsing completely to an unsafe
DD
MOTOROLA
6-lvi