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CHAPTER 20 USART
■ Transmission interrupt request generation timing
If the TDRE flag is set to "1" when a transmission interrupt is enabled (SSRn: TIE=1), transmission interrupt
request is generated.
Note:
A transmission completion interrupt is generated immediately after the transmission interrupt is enabled
(TIE=1) because the TDRE bit is set to 1 as its initial value. Carefully specify the transmission interrupt
enable timing.
502
MB96300 Super Series Hardware Manual
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