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PIC18F44J10 데이터시트(PDF) 206 Page - Microchip Technology |
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PIC18F44J10 데이터시트(HTML) 206 Page - Microchip Technology |
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206 / 368 page ![]() PIC18F45J10 FAMILY DS39682E-page 204 © 2009 Microchip Technology Inc. FIGURE 17-4: ASYNCHRONOUS TRANSMISSION FIGURE 17-5: ASYNCHRONOUS TRANSMISSION (BACK TO BACK) TABLE 17-5: REGISTERS ASSOCIATED WITH ASYNCHRONOUS TRANSMISSION Name Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 Reset Values on page INTCON GIE/GIEH PEIE/GIEL TMR0IE INT0IE RBIE TMR0IF INT0IF RBIF 47 PIR1 PSPIF(1) ADIF RCIF TXIF SSP1IF CCP1IF TMR2IF TMR1IF 49 PIE1 PSPIE(1) ADIE RCIE TXIE SSP1IE CCP1IE TMR2IE TMR1IE 49 IPR1 PSPIP(1) ADIP RCIP TXIP SSP1IP CCP1IP TMR2IP TMR1IP 49 RCSTA SPEN RX9 SREN CREN ADDEN FERR OERR RX9D 49 TXREG EUSART Transmit Register 49 TXSTA CSRC TX9 TXEN SYNC SENDB BRGH TRMT TX9D 49 BAUDCON ABDOVF RCIDL — SCKP BRG16 — WUE ABDEN 49 SPBRGH EUSART Baud Rate Generator Register High Byte 49 SPBRG EUSART Baud Rate Generator Register Low Byte 49 Legend: — = unimplemented locations read as ‘0’. Shaded cells are not used for asynchronous transmission. Note 1: These bits are not implemented on 28-pin devices and should be read as ‘0’. Word 1 Word 1 Transmit Shift Reg Start bit bit 0 bit 1 bit 7/8 Write to TXREG BRG Output (Shift Clock) TX (pin) TXIF bit (Transmit Buffer Reg. Empty Flag) TRMT bit (Transmit Shift Reg. Empty Flag) 1 TCY Stop bit Word 1 Transmit Shift Reg. Write to TXREG BRG Output (Shift Clock) TX (pin) TXIF bit (Interrupt Reg. Flag) TRMT bit (Transmit Shift Reg. Empty Flag) Word 1 Word 2 Word 1 Word 2 Stop bit Start bit Transmit Shift Reg. Word 1 Word 2 bit 0 bit 1 bit 7/8 bit 0 Note: This timing diagram shows two consecutive transmissions. 1 TCY 1 TCY Start bit |
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