Fujitsu F2MC-16LX Hardware Manual page 157

CHAPTER 6 LOW-POWER CONSUMPTION MODE
Note:
When executing an interrupt, an instruction next to the instruction specifying the timebase
timer mode is normally executed first before an interrupt request is processed. If a change to
the timebase timer mode occurs at the same time as an external bus hold request is
received, an interrupt may be executed first before the next instruction is executed.
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