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PIC16F870/P 데이터시트(PDF) 66 Page - Microchip Technology |
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PIC16F870/P 데이터시트(HTML) 66 Page - Microchip Technology |
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66 / 156 page ![]() PIC16F870/871 DS30569A-page 66 Preliminary © 1999 Microchip Technology Inc. - TABLE 9-3: BAUD RATES FOR ASYNCHRONOUS MODE (BRGH = 0) BAUD RATE (K) FOSC = 20 MHz FOSC = 16 MHz FOSC = 10 MHz KBAUD % ERROR SPBRG value (decimal) KBAUD % ERROR SPBRG value (decimal) KBAUD % ERROR SPBRG value (decimal) 0.3 - -- - - - - -- 1.2 1.221 1.75 255 1.202 0.17 207 1.202 0.17 129 2.4 2.404 0.17 129 2.404 0.17 103 2.404 0.17 64 9.6 9.766 1.73 31 9.615 0.16 25 9.766 1.73 15 19.2 19.531 1.72 15 19.231 0.16 12 19.531 1.72 7 28.8 31.250 8.51 9 27.778 3.55 8 31.250 8.51 4 33.6 34.722 3.34 8 35.714 6.29 6 31.250 6.99 4 57.6 62.500 8.51 4 62.500 8.51 3 52.083 9.58 2 HIGH 1.221 - 255 0.977 - 255 0.610 - 255 LOW 312.500 - 0 250.000 - 0 156.250 - 0 BAUD RATE (K) FOSC = 4 MHz FOSC = 3.6864 MHz KBAUD % ERROR SPBRG value (decimal) KBAUD % ERROR SPBRG value (decimal) 0.3 0.300 0 207 0.301 0.33 185 1.2 1.202 0.17 51 1.216 1.33 46 2.4 2.404 0.17 25 2.432 1.33 22 9.6 8.929 6.99 6 9.322 2.90 5 19.2 20.833 8.51 2 18.643 2.90 2 28.8 31.250 8.51 1 - - - 33.6 - - - - - - 57.6 62.500 8.51 0 55.930 2.90 0 HIGH 0.244 - 255 0.218 - 255 LOW 62.500 - 0 55.930 - 0 TABLE 9-4: BAUD RATES FOR ASYNCHRONOUS MODE (BRGH = 1) BAUD RATE (K) FOSC = 20 MHz FOSC = 16 MHz FOSC = 10 MHz KBAUD % ERROR SPBRG value (decimal) KBAUD % ERROR SPBRG value (decimal) KBAUD % ERROR SPBRG value (decimal) 0.3 - -- - - - - -- 1.2 - -- - - - - -- 2.4 - - - - - - 2.441 1.71 255 9.6 9.615 0.16 129 9.615 0.16 103 9.615 0.16 64 19.2 19.231 0.16 64 19.231 0.16 51 19.531 1.72 31 28.8 29.070 0.94 42 29.412 2.13 33 28.409 1.36 21 33.6 33.784 0.55 36 33.333 0.79 29 32.895 2.10 18 57.6 59.524 3.34 20 58.824 2.13 16 56.818 1.36 10 HIGH 4.883 - 255 3.906 - 255 2.441 - 255 LOW 1250.000 - 0 1000.000 0 625.000 - 0 BAUD RATE (K) FOSC = 4 MHz FOSC = 3.6864 MHz KBAUD % ERROR SPBRG value (decimal) KBAUD % ERROR SPBRG value (decimal) 0.3 - - - - - - 1.2 1.202 0.17 207 1.203 0.25 185 2.4 2.404 0.17 103 2.406 0.25 92 9.6 9.615 0.16 25 9.727 1.32 22 19.2 19.231 0.16 12 18.643 2.90 11 28.8 27.798 3.55 8 27.965 2.90 7 33.6 35.714 6.29 6 31.960 4.88 6 57.6 62.500 8.51 3 55.930 2.90 3 HIGH 0.977 - 255 0.874 - 255 LOW 250.000 - 0 273.722 - 0 |
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