MC68HC08AS20 Datasheet, PDF (79/386 Pages) Freescale Semiconductor, Inc – M68HC08 Microcontrollers

7.5 Arithmetic/Logic Unit (ALU)
The ALU performs the arithmetic and logic operations defined by the
instruction set.
Refer to the CPU08 Reference Manual (Freescale document number
CPU08RM/AD) for a description of the instructions and addressing
modes and more detail about CPU architecture.
7.6 CPU During Break Interrupts
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 Section 11. Break Module (Break). The
program 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.
MC68HC08AS20 — Rev. 4.1
Freescale Semiconductor
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