Datasheet

Section 15 Serial Communication Interface (SCI)
Rev. 6.00 Mar. 18, 2010 Page 584 of 982
REJ09B0054-0600
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8 MHz
7.3725 MHz
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8 MHz
5.76 MHz
123
2 MHz
1.8431 MHz
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1 bit = Base clock x 16
*
Base clock
16 MHz/8 = 2 MHz
2 MHz x (47/51) =
1.8431 MHz (Average)
Average transfer rate when
f = 115.196 kbps
Average transfer rate = 1.8431 MHz/16 = 115.196 kbps Average error with 115.2 kbps = −0.004%
1 bit = Base clock x 16
*
Base clock
16 MHz/2 = 8 MHz
8 MHz x (47/51) =
7.3725 MHz (Average)
Average transfer rate when
f = 460.784 kbps
Average transfer rate = 7.3725 MHz/16 = 460.784 kbps Average error with 460.8 kbps = −0.004%
1 bit = Base clock x 16
*
Base clock
16 MHz/2 = 8 MHz
8 MHz x (18/5) =
5.76 MHz (Average)
Average transfer rate when
f = 720 kbps
Average transfer rate = 5.76 MHz/8 = 720 kbps Average error with 720 kbps = −0%
Note: * The 1-bit length changes according to the base clock synchronization.
φ = 16 MHz
Figure 15.4 Example of the Internal Base Clock
When the Average Transfer Rate Is Selected (2)