Tempo 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 190 200 210 220 230 240 250 260 270 280 290 300 350 400 450 500 550 600 650 700 750 800 850 900 950 1000 beat(ms) 1500.000 1200.000 1000.000 857.143 750.000 666.667 600.000 545.455 500.000 461.538 428.571 400.000 375.000 352.941 333.333 315.789 300.000 285.714 272.727 260.870 250.000 240.000 230.769 222.222 214.286 206.897 200.000 171.429 150.000 133.333 120.000 109.091 100.000 92.308 85.714 80.000 75.000 70.588 66.667 63.158 60.000 EM60000 Tempo setting select table (Fosc=2MHz) ideal MS0-2 real MTC(ms) divide precaler | divide | MTC(ms) Tempo 31.250 244.141 128 244 31.2 40.0 25.000 195.313 128 195 25.0 50.1 20.833 162.760 128 163 20.9 59.9 17.857 139.509 128 140 17.9 69.8 15.625 244.141 64 244 15.6 80.0 13.889 217.014 64 217 13.9 90.0 12.500 195.313 64 195 12.5 100.2 11.364 177.557 64 178 11.4 109.7 10.417 162.760 64 163 10.4 119.8 9.615 150.240 64 150 9.6 130.2 8.929 139.509 64 140 9.0 139.5 8.333 130.208 64 130 8.3 150.2 7.813 244.141 32 244 7.8 160.1 7.353 229.779 32 230 7.4 169.8 6.944 217.014 32 217 6.9 180.0 6.579 205.592 32 206 6.6 189.6 6.250 195.313 32 195 6.2 200.3 5.952 186.012 32 186 6.0 210.0 5.682 177.557 32 178 5.7 219.5 5.435 169.837 32 170 5.4 229.8 5.208 162.760 32 163 5.2 239.6 5.000 156.250 32 156 5.0 250.4 4.808 150.240 32 150 4.8 260.4 4.630 144.676 32 145 4.6 269.4 4.464 139.509 32 140 4.5 279.0 4.310 134.698 32 135 4.3 289.4 4.167 130.208 32 130 4.2 300.5 3.571 223.214 16 223 3.6 350.3 3.125 195.313 16 195 3.1 400.6 2.778 173.611 16 174 2.8 449.0 2.500 156.250 16 156 2.5 500.8 2.273 142.045 16 142 2.3 550.2 2.083 130.208 16 130 2.1 601.0 1.923 120.192 16 120 1.9 651.0 1.786 223.214 8 223 1.8 700.7 1.667 208.333 8 208 1.7 751.2 1.563 195.313 8 195 1.6 801.3 1.471 183.824 8 184 1.5 849.2 1.389 173.611 8 174 1.4 898.0 1.316 164.474 8 164 1.3 952.7 1.250 156.250 8 156 1.2 1001.6 Tempo = 60/beart = 60/(48*MTC) = 60/48*(1/Fosc * 2 * Precaler* Divide) 誤差 0.06% 0.16% -0.15% -0.35% 0.06% 0.01% 0.16% -0.25% -0.15% 0.16% -0.35% 0.16% 0.06% -0.10% 0.01% -0.20% 0.16% 0.01% -0.25% -0.10% -0.15% 0.16% 0.16% -0.22% -0.35% -0.22% 0.16% 0.10% 0.16% -0.22% 0.16% 0.03% 0.16% 0.16% 0.10% 0.16% 0.16% -0.10% -0.22% 0.29% 0.16%