MC68HC708XL36 FREESCALE [Freescale Semiconductor, Inc], MC68HC708XL36 Datasheet - Page 74

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

Low-Power Modes
Introduction
Central Processor Unit (CPU)
Wait Mode
Stop Mode
MC68HC708XL36
74
The WAIT instruction puts the MCU in a low-power standby mode in
which the CPU clock is disabled but the bus clock continues to run. The
STOP instruction disables both the CPU clock and the bus clock.
The WAIT instruction:
The STOP instruction:
After exiting stop mode, the CPU clock begins running after the oscillator
stabilization delay.
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Clears the interrupt mask (I bit) in the condition code register,
enabling interrupts. After exit from wait mode by interrupt, the I bit
remains clear. After exit by reset, the I bit is set.
Disables the CPU clock.
Clears the interrupt mask (I bit) in the condition code register,
enabling external interrupts. After exit from stop mode by external
interrupt, the I bit remains clear. After exit by reset, the I bit is set.
Disables the CPU clock.
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Low-Power Modes
MOTOROLA
2-lp24_e