Datasheet

Section 13 Serial Communication Interface (SCI)
Rev. 3.00 Sep. 28, 2009 Page 268 of 710
REJ09B0384-0300
Table 13.3 Examples of BRR Settings for Various Bit Rates (Asynchronous Mode)
Operating Frequency φ (MHz)
20 25
Bit Rate
(bit/s) n N Error (%) n N Error (%)
110 3 88 –0.25 3 110 –0.02
150 3 64 0.16 3 80 –0.47
300 2 129 0.16 2 162 0.15
600 2 64 0.16 2 80 –0.47
1200 1 129 0.16 1 162 0.15
2400 1 64 0.16 1 80 –0.47
4800 0 129 0.16 0 162 0.15
9600 0 64 0.16 0 80 –0.47
19200 0 32 –1.36 0 40 –0.76
31250 0 19 0.00 0 24 0.00
38400 0 15 1.73 0 19 1.73
Note: Make the settings so that the error does not exceed 1%.
Table 13.4 Maximum Bit Rate for Each Frequency (Asynchronous Mode)
φ (MHz) Maximum Bit Rate (bit/s) n N
20 625000 0 0
25 781250 0 0
Table 13.5 Maximum Bit Rate with External Clock Input (Asynchronous Mode)
φ (MHz) External Input Clock (MHz) Maximum Bit Rate (bit/s)
20 5.0000 312500
25 6.2500 390625