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Why is there a waiting time of 1 bit before TE bit or RE bit of SCR is set to 1?

Latest Updated:03/26/2009

Question:

When initializing the SCI, a waiting time of at least 1 bit is provided before TE bit or RE bit of Serial Control Register (SCR) is set to 1. What is the reason?

Answer:

The waiting period of 1 bit is the minimum time in order to initialize the internal state of SCI. If you don't wait the time before sending the data, erroneous data may be sent.
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