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PIC18F1220E/SOSQTP Datasheet(PDF) 138 Page - Microchip Technology |
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PIC18F1220E/SOSQTP Datasheet(HTML) 138 Page - Microchip Technology |
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138 / 308 page  PIC18F1220/1320 DS39605F-page 136 © 2007 Microchip Technology Inc. TABLE 16-2: REGISTERS ASSOCIATED WITH BAUD RATE GENERATOR Name Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 Value on POR, BOR Value on all other Resets TXSTA CSRC TX9 TXEN SYNC SENDB BRGH TRMT TX9D 0000 -010 0000 -010 RCSTA SPEN RX9 SREN CREN ADDEN FERR OERR RX9D 0000 -00x 0000 -00x BAUDCTL — RCIDL — SCKP BRG16 — WUE ABDEN -1-1 0-00 -1-1 0-00 SPBRGH Baud Rate Generator Register High Byte 0000 0000 0000 0000 SPBRG Baud Rate Generator Register Low Byte 0000 0000 0000 0000 Legend: x = unknown, – = unimplemented, read as ‘0’. Shaded cells are not used by the BRG. TABLE 16-3: BAUD RATES FOR ASYNCHRONOUS MODES BAUD RATE (K) SYNC = 0, BRGH = 0, BRG16 = 0 FOSC = 40.000 MHz 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) 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 2.441 1.73 255 2.404 0.16 129 2.404 0.16 64 2403 -0.16 51 9.6 9.615 0.16 64 9.766 1.73 31 9.766 1.73 15 9615 -0.16 12 19.2 19.531 1.73 31 19.531 1.73 15 19.531 1.73 7 — — — 57.6 56.818 -1.36 10 62.500 8.51 4 52.083 -9.58 2 — — — 115.2 125.000 8.51 4 104.167 -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 — — — — — — |
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