XC908AS60ACFU Motorola Semiconductor Products, XC908AS60ACFU Datasheet - Page 136

• Manufacturer Part Number: XC908AS60ACFU
• Description: MC68HC908AZ60A, MC68HC908AS60A Hcmos Microcontroller Unit Technical Data
• Manufacturer: Motorola Semiconductor Products

Central Processor Unit (CPU)
8.6 Low-power modes
8.6.1 WAIT mode
8.6.2 STOP mode
8.7 CPU during break interrupts
Technical Data
136
The WAIT and STOP instructions put the MCU in low--power
consumption standby modes.
The WAIT instruction:
The STOP instruction:
After exiting STOP mode, the CPU clock begins running after the
oscillator stabilization delay.
If the break module is enabled, a break interrupt causes the CPU to
execute the software interrupt instruction (SWI) at the completion of the
current CPU instruction. See
counter vectors to $FFFC–$FFFD ($FEFC–$FEFD in monitor mode).
A return-from-interrupt instruction (RTI) in the break routine ends the
break interrupt and returns the MCU to normal operation if the break
interrupt has been deasserted.
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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
Central Processor Unit (CPU)
Break Module
(BRK). The program
MC68HC908AZ60A — Rev 2.0
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