| CPU Speed = 4MHz, MaxErr = 20% | ||
| SPBRG | Rate w/ BRGH=0 | Rate w/ BRGH=1 |
|---|---|---|
| 0 | 62,500.00 (57600 -8.5%) | 250,000.00 (230400 -8.5%) |
| 1 | 31,250.00 (38400 18.6%) | 125,000.00 (115200 -8.5%) |
| 2 | 20,833.33 (19200 -8.5%) | |
| 3 | 15,625.00 (19200 18.6%) | 62,500.00 (57600 -8.5%) |
| 4 | 12,500.00 (14400 13.2%) | 50,000.00 (57600 13.2%) |
| 5 | 10,416.67 (9600 -8.5%) | 41,666.67 (38400 -8.5%) |
| 6 | 8,928.57 (9600 7.0%) | 35,714.29 (38400 7.0%) |
| 7 | 7,812.50 (9600 18.6%) | 31,250.00 (38400 18.6%) |
| 10 | 5,681.82 (4800 -18.4%) | 22,727.27 (19200 -18.4%) |
| 11 | 5,208.33 (4800 -8.5%) | 20,833.33 (19200 -8.5%) |
| 12 | 4,807.69 (4800 -0.1%) | 19,230.77 (19200 -0.2%) |
| 13 | 4,464.29 (4800 7.0%) | 17,857.14 (19200 7.0%) |
| 14 | 4,166.67 (4800 13.2%) | 16,666.67 (19200 13.2%) |
| 15 | 3,906.25 (4800 18.6%) | 15,625.00 (19200 18.6%) |
| 16 | 14,705.88 (14400 -2.1%) | |
| 17 | 13,888.89 (14400 3.6%) | |
| 18 | 13,157.89 (14400 8.6%) | |
| 19 | 12,500.00 (14400 13.2%) | |
| 20 | 11,904.76 (14400 17.3%) | |
| 21 | 2,840.91 (2400 -18.3%) | 11,363.64 (9600 -18.4%) |
| 22 | 2,717.39 (2400 -13.2%) | 10,869.57 (9600 -13.2%) |
| 23 | 2,604.17 (2400 -8.5%) | 10,416.67 (9600 -8.5%) |
| 24 | 2,500.00 (2400 -4.2%) | 10,000.00 (9600 -4.2%) |
| 25 | 2,403.85 (2400 -0.1%) | 9,615.38 (9600 -0.2%) |
| 26 | 2,314.81 (2400 3.6%) | 9,259.26 (9600 3.6%) |
| 27 | 2,232.14 (2400 7.0%) | 8,928.57 (9600 7.0%) |
| 28 | 2,155.17 (2400 10.2%) | 8,620.69 (9600 10.2%) |
| 29 | 2,083.33 (2400 13.2%) | 8,333.33 (9600 13.2%) |
| 30 | 2,016.13 (2400 16.0%) | 8,064.52 (9600 16.0%) |
| 31 | 1,953.13 (2400 18.6%) | 7,812.50 (9600 18.6%) |
| 43 | 1,420.45 (1200 -18.3%) | 5,681.82 (4800 -18.4%) |
| 44 | 1,388.89 (1200 -15.7%) | 5,555.56 (4800 -15.7%) |
| 45 | 1,358.70 (1200 -13.2%) | 5,434.78 (4800 -13.2%) |
| 46 | 1,329.79 (1200 -10.8%) | 5,319.15 (4800 -10.8%) |
| 47 | 1,302.08 (1200 -8.5%) | 5,208.33 (4800 -8.5%) |
| 48 | 1,275.51 (1200 -6.3%) | 5,102.04 (4800 -6.3%) |
| 49 | 1,250.00 (1200 -4.2%) | 5,000.00 (4800 -4.2%) |
| 50 | 1,225.49 (1200 -2.1%) | 4,901.96 (4800 -2.1%) |
| 51 | 1,201.92 (1200 -0.1%) | 4,807.69 (4800 -0.1%) |
| 52 | 1,179.25 (1200 1.8%) | 4,716.98 (4800 1.8%) |
| 53 | 1,157.41 (1200 3.6%) | 4,629.63 (4800 3.6%) |
| 54 | 1,136.36 (1200 5.3%) | 4,545.45 (4800 5.3%) |
| 55 | 1,116.07 (1200 7.0%) | 4,464.29 (4800 7.0%) |
| 56 | 1,096.49 (1200 8.7%) | 4,385.96 (4800 8.6%) |
| 57 | 1,077.59 (1200 10.3%) | 4,310.34 (4800 10.2%) |
| 58 | 1,059.32 (1200 11.8%) | 4,237.29 (4800 11.7%) |
| 59 | 1,041.67 (1200 13.3%) | 4,166.67 (4800 13.2%) |
| 60 | 1,024.59 (1200 14.7%) | 4,098.36 (4800 14.6%) |
| 61 | 1,008.06 (1200 16.0%) | 4,032.26 (4800 16.0%) |
| 62 | 992.06 (1200 17.3%) | 3,968.25 (4800 17.3%) |
| 63 | 976.56 (1200 18.7%) | 3,906.25 (4800 18.6%) |
| 64 | 961.54 (1200 19.9%) | 3,846.15 (4800 19.9%) |
| 86 | 718.39 (600 -19.7%) | 2,873.56 (2400 -19.7%) |
| 87 | 710.23 (600 -18.3%) | 2,840.91 (2400 -18.3%) |
| 88 | 702.25 (600 -17.0%) | 2,808.99 (2400 -17.0%) |
| 89 | 694.44 (600 -15.7%) | 2,777.78 (2400 -15.7%) |
| 90 | 686.81 (600 -14.3%) | 2,747.25 (2400 -14.5%) |
| 91 | 679.35 (600 -13.2%) | 2,717.39 (2400 -13.2%) |
| 92 | 672.04 (600 -12.0%) | 2,688.17 (2400 -12.0%) |
| 93 | 664.89 (600 -10.7%) | 2,659.57 (2400 -10.8%) |
| 94 | 657.89 (600 -9.5%) | 2,631.58 (2400 -9.6%) |
| 95 | 651.04 (600 -8.5%) | 2,604.17 (2400 -8.5%) |
| 96 | 644.33 (600 -7.3%) | 2,577.32 (2400 -7.4%) |
| 97 | 637.76 (600 -6.2%) | 2,551.02 (2400 -6.3%) |
| 98 | 631.31 (600 -5.2%) | 2,525.25 (2400 -5.2%) |
| 99 | 625.00 (600 -4.2%) | 2,500.00 (2400 -4.2%) |
| 100 | 618.81 (600 -3.0%) | 2,475.25 (2400 -3.1%) |
| 101 | 612.75 (600 -2.0%) | 2,450.98 (2400 -2.1%) |
| 102 | 606.80 (600 -1.0%) | 2,427.18 (2400 -1.1%) |
| 103 | 600.96 (600 0.0%) | 2,403.85 (2400 -0.1%) |
| 104 | 595.24 (600 0.8%) | 2,380.95 (2400 0.8%) |
| 105 | 589.62 (600 1.8%) | 2,358.49 (2400 1.8%) |
| 106 | 584.11 (600 2.7%) | 2,336.45 (2400 2.7%) |
| 107 | 578.70 (600 3.7%) | 2,314.81 (2400 3.6%) |
| 108 | 573.39 (600 4.5%) | 2,293.58 (2400 4.5%) |
| 109 | 568.18 (600 5.3%) | 2,272.73 (2400 5.3%) |
| 110 | 563.06 (600 6.2%) | 2,252.25 (2400 6.2%) |
| 111 | 558.04 (600 7.0%) | 2,232.14 (2400 7.0%) |
| 112 | 553.10 (600 7.8%) | 2,212.39 (2400 7.8%) |
| 113 | 548.25 (600 8.7%) | 2,192.98 (2400 8.7%) |
| 114 | 543.48 (600 9.5%) | 2,173.91 (2400 9.5%) |
| 115 | 538.79 (600 10.3%) | 2,155.17 (2400 10.2%) |
| 116 | 534.19 (600 11.0%) | 2,136.75 (2400 11.0%) |
| 117 | 529.66 (600 11.8%) | 2,118.64 (2400 11.8%) |
| 118 | 525.21 (600 12.5%) | 2,100.84 (2400 12.5%) |
| 119 | 520.83 (600 13.3%) | 2,083.33 (2400 13.2%) |
| 120 | 516.53 (600 14.0%) | 2,066.12 (2400 13.9%) |
| 121 | 512.30 (600 14.7%) | 2,049.18 (2400 14.6%) |
| 122 | 508.13 (600 15.3%) | 2,032.52 (2400 15.3%) |
| 123 | 504.03 (600 16.0%) | 2,016.13 (2400 16.0%) |
| 124 | 500.00 (600 16.7%) | 2,000.00 (2400 16.7%) |
| 125 | 496.03 (600 17.3%) | 1,984.13 (2400 17.3%) |
| 126 | 492.13 (600 18.0%) | 1,968.50 (2400 18.0%) |
| 127 | 488.28 (600 18.7%) | 1,953.13 (2400 18.6%) |
| 128 | 484.50 (600 19.3%) | 1,937.98 (2400 19.3%) |
| 129 | 480.77 (600 20.0%) | 1,923.08 (2400 19.9%) |
| 173 | 359.20 (300 -19.7%) | 1,436.78 (1200 -19.7%) |
| 174 | 357.14 (300 -19.0%) | 1,428.57 (1200 -19.0%) |
| 175 | 355.11 (300 -18.3%) | 1,420.45 (1200 -18.3%) |
| 176 | 353.11 (300 -17.7%) | 1,412.43 (1200 -17.7%) |
| 177 | 351.12 (300 -17.0%) | 1,404.49 (1200 -17.0%) |
| 178 | 349.16 (300 -16.3%) | 1,396.65 (1200 -16.3%) |
| 179 | 347.22 (300 -15.7%) | 1,388.89 (1200 -15.7%) |
| 180 | 345.30 (300 -15.0%) | 1,381.22 (1200 -15.1%) |
| 181 | 343.41 (300 -14.3%) | 1,373.63 (1200 -14.4%) |
| 182 | 341.53 (300 -13.7%) | 1,366.12 (1200 -13.8%) |
| 183 | 339.67 (300 -13.0%) | 1,358.70 (1200 -13.2%) |
| 184 | 337.84 (300 -12.3%) | 1,351.35 (1200 -12.6%) |
| 185 | 336.02 (300 -12.0%) | 1,344.09 (1200 -12.0%) |
| 186 | 334.22 (300 -11.3%) | 1,336.90 (1200 -11.3%) |
| 187 | 332.45 (300 -10.7%) | 1,329.79 (1200 -10.8%) |
| 188 | 330.69 (300 -10.0%) | 1,322.75 (1200 -10.2%) |
| 189 | 328.95 (300 -9.3%) | 1,315.79 (1200 -9.6%) |
| 190 | 327.23 (300 -9.0%) | 1,308.90 (1200 -9.0%) |
| 191 | 325.52 (300 -8.3%) | 1,302.08 (1200 -8.5%) |
| 192 | 323.83 (300 -7.7%) | 1,295.34 (1200 -7.9%) |
| 193 | 322.16 (300 -7.3%) | 1,288.66 (1200 -7.3%) |
| 194 | 320.51 (300 -6.7%) | 1,282.05 (1200 -6.8%) |
| 195 | 318.88 (300 -6.0%) | 1,275.51 (1200 -6.3%) |
| 196 | 317.26 (300 -5.7%) | 1,269.04 (1200 -5.8%) |
| 197 | 315.66 (300 -5.0%) | 1,262.63 (1200 -5.2%) |
| 198 | 314.07 (300 -4.7%) | 1,256.28 (1200 -4.7%) |
| 199 | 312.50 (300 -4.0%) | 1,250.00 (1200 -4.2%) |
| 200 | 310.95 (300 -3.3%) | 1,243.78 (1200 -3.6%) |
| 201 | 309.41 (300 -3.0%) | 1,237.62 (1200 -3.1%) |
| 202 | 307.88 (300 -2.3%) | 1,231.53 (1200 -2.6%) |
| 203 | 306.37 (300 -2.0%) | 1,225.49 (1200 -2.1%) |
| 204 | 304.88 (300 -1.3%) | 1,219.51 (1200 -1.6%) |
| 205 | 303.40 (300 -1.0%) | 1,213.59 (1200 -1.1%) |
| 206 | 301.93 (300 -0.3%) | 1,207.73 (1200 -0.6%) |
| 207 | 300.48 (300 0.0%) | 1,201.92 (1200 -0.1%) |
| 208 | 299.04 (300 0.3%) | 1,196.17 (1200 0.3%) |
| 209 | 297.62 (300 1.0%) | 1,190.48 (1200 0.8%) |
| 210 | 296.21 (300 1.3%) | 1,184.83 (1200 1.3%) |
| 211 | 294.81 (300 2.0%) | 1,179.25 (1200 1.8%) |
| 212 | 293.43 (300 2.3%) | 1,173.71 (1200 2.3%) |
| 213 | 292.06 (300 2.7%) | 1,168.22 (1200 2.7%) |
| 214 | 290.70 (300 3.3%) | 1,162.79 (1200 3.2%) |
| 215 | 289.35 (300 3.7%) | 1,157.41 (1200 3.6%) |
| 216 | 288.02 (300 4.0%) | 1,152.07 (1200 4.0%) |
| 217 | 286.70 (300 4.7%) | 1,146.79 (1200 4.5%) |
| 218 | 285.39 (300 5.0%) | 1,141.55 (1200 4.9%) |
| 219 | 284.09 (300 5.3%) | 1,136.36 (1200 5.3%) |
| 220 | 282.81 (300 6.0%) | 1,131.22 (1200 5.8%) |
| 221 | 281.53 (300 6.3%) | 1,126.13 (1200 6.2%) |
| 222 | 280.27 (300 6.7%) | 1,121.08 (1200 6.6%) |
| 223 | 279.02 (300 7.0%) | 1,116.07 (1200 7.0%) |
| 224 | 277.78 (300 7.7%) | 1,111.11 (1200 7.4%) |
| 225 | 276.55 (300 8.0%) | 1,106.19 (1200 7.8%) |
| 226 | 275.33 (300 8.3%) | 1,101.32 (1200 8.3%) |
| 227 | 274.12 (300 8.7%) | 1,096.49 (1200 8.7%) |
| 228 | 272.93 (300 9.3%) | 1,091.70 (1200 9.1%) |
| 229 | 271.74 (300 9.7%) | 1,086.96 (1200 9.5%) |
| 230 | 270.56 (300 10.0%) | 1,082.25 (1200 9.8%) |
| 231 | 269.40 (300 10.3%) | 1,077.59 (1200 10.3%) |
| 232 | 268.24 (300 10.7%) | 1,072.96 (1200 10.7%) |
| 233 | 267.09 (300 11.0%) | 1,068.38 (1200 11.0%) |
| 234 | 265.96 (300 11.7%) | 1,063.83 (1200 11.4%) |
| 235 | 264.83 (300 12.0%) | 1,059.32 (1200 11.8%) |
| 236 | 263.71 (300 12.3%) | 1,054.85 (1200 12.2%) |
| 237 | 262.61 (300 12.7%) | 1,050.42 (1200 12.5%) |
| 238 | 261.51 (300 13.0%) | 1,046.03 (1200 12.8%) |
| 239 | 260.42 (300 13.3%) | 1,041.67 (1200 13.3%) |
| 240 | 259.34 (300 13.7%) | 1,037.34 (1200 13.6%) |
| 241 | 258.26 (300 14.0%) | 1,033.06 (1200 13.9%) |
| 242 | 257.20 (300 14.3%) | 1,028.81 (1200 14.3%) |
| 243 | 256.15 (300 14.7%) | 1,024.59 (1200 14.7%) |
| 244 | 255.10 (300 15.0%) | 1,020.41 (1200 15.0%) |
| 245 | 254.07 (300 15.3%) | 1,016.26 (1200 15.3%) |
| 246 | 253.04 (300 15.7%) | 1,012.15 (1200 15.7%) |
| 247 | 252.02 (300 16.0%) | 1,008.06 (1200 16.0%) |
| 248 | 251.00 (300 16.3%) | 1,004.02 (1200 16.3%) |
| 249 | 250.00 (300 16.7%) | 1,000.00 (1200 16.7%) |
| 250 | 249.00 (300 17.0%) | 996.02 (1200 17.0%) |
| 251 | 248.02 (300 17.3%) | 992.06 (1200 17.3%) |
| 252 | 247.04 (300 17.7%) | 988.14 (1200 17.7%) |
| 253 | 246.06 (300 18.0%) | 984.25 (1200 18.0%) |
| 254 | 245.10 (300 18.3%) | 980.39 (1200 18.3%) |
| 255 | 244.14 (300 18.7%) | 976.56 (1200 18.7%) |
Based on Andy Kunz's baudrate.c
See also: