Datasheet

Table Of Contents
Section 13 Serial Communication Interface
Page 416 of 846 REJ09B0140-0900 Rev. 9.00
Sep 16, 2010
H8S/2215 Group
a 1-bit transfer interval) can be selected. For details, see section 13.7.5, Receive Data Sampling
Timing and Reception Margin. Tables 13.5 and 13.7 show the maximum bit rates with external
clock input.
When the ABCS bit in SCI_0's serial extended mode register (SEMR) is set to 1 in asynchronous
mode, the maximum bit rates are twice those shown in table 13.3.
Table 13.3 BRR Settings for Various Bit Rates (Asynchronous Mode)
Operating Frequency φ (MHz)
2 2.097152 2.4576 3
Bit Rate
(bit/s)
n N Error (%) n N Error (%) n N Error (%) n N Error (%)
110 1 141 0.03 1 148 –0.04 1 174 –0.26 1 212 0.03
150 1 103 0.16 1 108 0.21 1 127 0.00 1 155 0.16
300 0 207 0.16 0 217 0.21 0 255 0.00 1 77 0.16
600 0 103 0.16 0 108 0.21 0 127 0.00 0 155 0.16
1200 0 51 0.16 0 54 –0.70 0 63 0.00 0 77 0.16
2400 0 25 0.16 0 26 1.14 0 31 0.00 0 38 0.16
4800 0 12 0.16 0 13 –2.48 0 15 0.00 0 19 –2.34
9600 6 –2.48 0 7 0.00 0 9 –2.34
19200 — — — 0 3 0.00 0 4 –2.34
31250 0 1 0.00 — — — — 0 2 0.00
38400 — — — 0 1 0.00