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What does base clock in asynchronous mode of the SCI means?

Latest Updated:01/23/2014

Question:

What is meant by the "base clock" in asynchronous mode of the serial communications interface?

Answer:

The base clock is the clock obtained by dividing the clock source of the on-chip baud rate generator set by the clock select bit (SMR.CKS[1:0]) by the bit rate register (BRR).
Suitable Products
RX630
RX63N, RX631
RX210