mc68hc11d0cfn2 Freescale Semiconductor, Inc, mc68hc11d0cfn2 Datasheet - Page 66

• Manufacturer Part Number: mc68hc11d0cfn2
• Description: M68hc11 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

Resets, Interrupts, and Low-Power Modes
4.4.2 Wait Mode
Data Sheet
66
The wait (WAI) instruction places the MCU in a low power-consumption mode. The
wait mode consumes more power than the stop mode since the oscillator is kept
running. Upon execution of the WAI instruction, the machine state is stacked and
program execution stops.
The wait state can be exited only by an unmasked interrupt or RESET. If the I bit
of the CCR is set and the COP is disabled, the timer system is turned off by WAI
to further reduce power consumption. The amount of power savings is application
dependent. It also depends upon the circuitry connected to the MCU pins, and
upon subsystems such as the timer, serial peripheral interface (SPI), or serial
communications interface (SCI) that were or were not active when the wait mode
was entered.
Freescale Semiconductor, Inc.
For More Information On This Product,
Resets, Interrupts, and Low-Power Modes
Go to: www.freescale.com
MC68HC711D3 — Rev. 2
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