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PIC16F688-E/ST Datasheet(PDF) 84 Page - Microchip Technology |
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PIC16F688-E/ST Datasheet(HTML) 84 Page - Microchip Technology |
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84 / 174 page  PIC16F688 DS41203B-page 82 Preliminary 2004 Microchip Technology Inc. TABLE 10-2: REGISTERS ASSOCIATED WITH BAUD RATE GENERATOR Addr Name Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 Value on: POR, BOD Value on all other Resets 11h BAUDCTL ABDOVF RCIDL — SCKP BRG16 — WUE ABDEN -1-1 0-00 -1-1 0-00 12h SPBRGH Baud Rate Generator register, high byte 0000 0000 0000 0000 13h SPBRG Baud Rate Generator register, low byte 0000 0000 0000 0000 16h TXSTA CSRC TX9 TXEN SYNC SENDB BRGH TRMT TX9D 0000 -010 0000 -010 17h RCSTA SPEN RX9 SREN CREN ADDEN FERR OERR RX9D 0000 000x 0000 000x Legend: x = unknown, u = unchanged, — = unimplemented locations read as ‘0’. Shaded cells are not used by oscillators. TABLE 10-3: BAUD RATES FOR ASYNCHRONOUS MODES BAUD RATE (K) SYNC = 0, BRGH = 0, BRG16 = 0 FOSC = 20.000 MHz FOSC = 10.000 MHz FOSC = 8.000 MHz Actual Rate (K) % Error SPBRG value (decimal) Actual Rate (K) % Error SPBRG value (decimal) Actual Rate (K) % Error SPBRG value (decimal) 0.3 — —— — — — — —— 1.2 1.221 1.73 255 1.202 0.16 129 1201 -0.16 103 2.4 2.404 0.16 129 2.404 0.16 64 2403 -0.16 51 9.6 9.766 1.73 31 9.766 1.73 15 9615 -0.16 12 19.2 19.531 1.73 15 19.531 1.73 7 — — — 57.6 62.500 8.51 4 52.083 -9.58 2 — — — 115.2 104.167 -9.58 2 78.125 -32.18 1 — — — BAUD RATE (K) SYNC = 0, BRGH = 0, BRG16 = 0 FOSC = 4.000 MHz FOSC = 2.000 MHz FOSC = 1.000 MHz Actual Rate (K) % Error SPBRG value (decimal) Actual Rate (K) % Error SPBRG value (decimal) Actual Rate (K) % Error SPBRG value (decimal) 0.3 0.300 0.16 207 300 -0.16 103 300 -0.16 51 1.2 1.202 0.16 51 1201 -0.16 25 1201 -0.16 12 2.4 2.404 0.16 25 2403 -0.16 12 — — — 9.6 8.929 -6.99 6 — — — — — — 19.2 20.833 8.51 2 — — — — — — 57.6 62.500 8.51 0 — — — — — — 115.2 62.500 -45.75 0 — — — — — — BAUD RATE (K) SYNC = 0, BRGH = 1, BRG16 = 0 FOSC = 20.000 MHz FOSC = 10.000 MHz FOSC = 8.000 MHz Actual Rate (K) % Error SPBRG value (decimal) Actual Rate (K) % Error SPBRG value (decimal) Actual Rate (K) % Error SPBRG value (decimal) 2.4 — — — 2.441 1.73 255 2403 -0.16 207 9.6 9.615 0.16 129 9.615 0.16 64 9615 -0.16 51 19.2 19.231 0.16 64 19.531 1.73 31 19230 -0.16 25 57.6 56.818 -1.36 21 56.818 -1.36 10 55555 3.55 8 115.2 113.636 -1.36 10 125.000 8.51 4 — — — |
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