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H8SX/1663M 数据表(PDF) 928 Page - Renesas Technology Corp |
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H8SX/1663M 数据表(HTML) 928 Page - Renesas Technology Corp |
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928 / 1504 page ![]() Section 19 Serial Communication Interface (SCI, IrDA, CRC) Rev. 2.00 Sep. 24, 2008 Page 896 of 1468 REJ09B0412-0200 Table 19.4 shows sample N settings in BRR in normal asynchronous mode. Table 19.5 shows the maximum bit rate settable for each operating frequency. Tables 19.7 and 19.9 show sample N settings in BRR in clocked synchronous mode and smart card interface mode, respectively. In smart card interface mode, the number of base clock cycles S in a 1-bit data transfer time can be selected. For details, see section 19.7.4, Receive Data Sampling Timing and Reception Margin. Tables 19.6 and 19.8 show the maximum bit rates with external clock input. When the ABCS bit in the serial extended mode register_2, 5, and 6 (SEMR_2, 5, and 6) of SCI_2, 5, and 6 are set to 1 in asynchronous mode, the bit rate is two times that of shown in table 19.4. Table 19.4 Examples of BRR Settings for Various Bit Rates (Asynchronous Mode) (1) Operating Frequency P φ (MHz) 8 9.8304 10 12 Bit Rate (bit/s) n N Error (%) n N Error (%) n N Error (%) n N Error (%) 110 2 141 0.03 2 174 –0.26 2 177 –0.25 2 212 0.03 150 2 103 0.16 2 127 0.00 2 129 0.16 2 155 0.16 300 1 207 0.16 1 255 0.00 2 64 0.16 2 77 0.16 600 1 103 0.16 1 127 0.00 1 129 0.16 1 155 0.16 1200 0 207 0.16 0 255 0.00 1 64 0.16 1 77 0.16 2400 0 103 0.16 0 127 0.00 0 129 0.16 0 155 0.16 4800 0 51 0.16 0 63 0.00 0 64 0.16 0 77 0.16 9600 0 25 0.16 0 31 0.00 0 32 –1.36 0 38 0.16 19200 0 12 0.16 0 15 0.00 0 15 1.73 0 19 –2.34 31250 0 7 0.00 0 9 –1.70 0 9 0.00 0 11 0.00 38400 0 7 0.00 0 7 1.73 0 9 –2.34 |
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