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PIC18F2610E/SOSQTP Datasheet(PDF) 201 Page - Microchip Technology |
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PIC18F2610E/SOSQTP Datasheet(HTML) 201 Page - Microchip Technology |
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201 / 376 page ![]() © 2009 Microchip Technology Inc. DS39636D-page 203 PIC18F2X1X/4X1X FIGURE 17-4: ASYNCHRONOUS TRANSMISSION FIGURE 17-5: ASYNCHRONOUS TRANSMISSION (BACK TO BACK) TABLE 17-5: REGISTERS ASSOCIATED WITH ASYNCHRONOUS TRANSMISSION Word 1 Word 1 Transmit Shift Reg Start bit bit 0 bit 1 bit 7/8 Write to TXREG BRG Output (Shift Clock) TX TXIF bit (Transmit Buffer Reg. Empty Flag) TRMT bit (Transmit Shift Reg. Empty Flag) 1 TCY (pin) Word 1 Stop bit Transmit Shift Reg. Write to TXREG BRG Output (Shift Clock) TX 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 (pin) Start bit 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 51 PIR1 PSPIF(1) ADIF RCIF TXIF SSPIF CCP1IF TMR2IF TMR1IF 54 PIE1 PSPIE(1) ADIE RCIE TXIE SSPIE CCP1IE TMR2IE TMR1IE 54 IPR1 PSPIP(1) ADIP RCIP TXIP SSPIP CCP1IP TMR2IP TMR1IP 54 RCSTA SPEN RX9 SREN CREN ADDEN FERR OERR RX9D 53 TXREG EUSART Transmit Register 53 TXSTA CSRC TX9 TXEN SYNC SENDB BRGH TRMT TX9D 53 BAUDCON ABDOVF RCIDL — SCKP BRG16 — WUE ABDEN 53 SPBRGH EUSART Baud Rate Generator Register, High Byte 53 SPBRG EUSART Baud Rate Generator Register, Low Byte 53 Legend: — = unimplemented locations read as ‘0’. Shaded cells are not used for asynchronous transmission. Note 1: These bits are unimplemented on 28-pin devices and read as ‘0’. |
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