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CHAPTER 20 LIN-UART
■ Suggested division ratios for different machine speeds and baud rates
The following settings are suggested for different MCU clock speeds and baud rates:
Note:
Deviations are given in%.
Maximum Synchronous Baud Rate: MCU-Clock div. by 5.
Table 20.6-1 Suggested Baud Rates and Reload Values at Different Machine Speeds.
Baud
rate
8 MHz 10 MHz 16 MHz 20 MHz 24 MHz
value dev. value dev. value dev. value dev. value dev.
4M------4050
2M- - 407090110
1M7090150190230
500000 15 0 19 0 31 0 39 0 47 0
460800--------51-0.16
250000 31 0 39 0 63 0 79 0 95 0
230400--------103-0.16
153600 51 -0.16 64 -0.16 103 -0.16 129 -0.16 155 -0.16
125000 63 0 79 0 127 0 159 0 191 0
115200 68 -0.64 86 0.22 138 0.08 173 0.22 207 -0.16
76800 103 -0.16 129 -0.16 207 -0.16 259 -0.16 311 -0.16
57600 138 0.08 173 0.22 277 0.08 346 -0.06 416 0.08
38400 207 -0.16 259 -0.16 416 0.08 520 0.03 624 0
28800 277 0.08 346 <0.01 554 -0.01 693 -0.06 832 -0.03
19200 416 0.08 520 0.03 832 -0.03 1041 0.03 1249 0
10417 767 <0.01 959 <0.01 1535 <0.01 1919 <0.01 2303 <0.01
9600 832 0.04 1041 0.03 1666 0.02 2083 0.03 2499 0
7200 1110 <0.01 1388 <0.01 2221 <0.01 2777 <0.01 3332 <0.01
4800 1666 0.02 2082 -0.02 3332 <0.01 4166 <0.01 4999 0
2400 3332 <0.01 4166 <0.01 6666 <0.01 8332 <0.01 9999 0
1200 6666 <0.01 8334 0.02 13332 <0.01 16666 <0.01 19999 0
600 13332 <0.01 16666 <0.01 26666 <0.01 - - - -
30026666<0.01--------