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P16F877 датащи(PDF) 108 Page - Microchip Technology |
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P16F877 датащи(HTML) 108 Page - Microchip Technology |
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108 / 218 page ![]() PIC16F87X DS30292C-page 106 2001 Microchip Technology Inc. TABLE 10-8: REGISTERS ASSOCIATED WITH SYNCHRONOUS MASTER TRANSMISSION FIGURE 10-9: SYNCHRONOUS TRANSMISSION FIGURE 10-10: SYNCHRONOUS TRANSMISSION (THROUGH TXEN) Address 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 0Bh, 8Bh, 10Bh,18Bh INTCON GIE PEIE T0IE INTE RBIE T0IF INTF R0IF 0000 000x 0000 000u 0Ch PIR1 PSPIF(1) ADIF RCIF TXIF SSPIF CCP1IF TMR2IF TMR1IF 0000 0000 0000 0000 18h RCSTA SPEN RX9 SREN CREN — FERR OERR RX9D 0000 -00x 0000 -00x 19h TXREG USART Transmit Register 0000 0000 0000 0000 8Ch PIE1 PSPIE(1) ADIE RCIE TXIE SSPIE CCP1IE TMR2IE TMR1IE 0000 0000 0000 0000 98h TXSTA CSRC TX9 TXEN SYNC — BRGH TRMT TX9D 0000 -010 0000 -010 99h SPBRG Baud Rate Generator Register 0000 0000 0000 0000 Legend: x = unknown, - = unimplemented, read as '0'. Shaded cells are not used for synchronous master transmission. Note 1: Bits PSPIE and PSPIF are reserved on PIC16F873/876 devices; always maintain these bits clear. bit 0 bit 1 bit 7 Word 1 Q1Q2 Q3Q4 Q1 Q2Q3 Q4Q1 Q2Q3 Q4Q1 Q2Q3 Q4Q1 Q2 Q3Q4 Q3Q4 Q1Q2 Q3Q4 Q1Q2 Q3Q4 Q1Q2 Q3 Q4Q1 Q2Q3 Q4Q1 Q2Q3 Q4Q1 Q2Q3 Q4 bit 2 bit 0 bit 1 bit 7 RC7/RX/DT pin RC6/TX/CK pin Write to TXREG reg TXIF bit (Interrupt Flag) TXEN bit ’1’ ’1’ Word 2 TRMT bit Write Word1 Write Word2 Note: Sync Master mode; SPBRG = ’0’. Continuous transmission of two 8-bit words. RC7/RX/DT pin RC6/TX/CK pin Write to TXREG Reg TXIF bit TRMT bit bit0 bit1 bit2 bit6 bit7 TXEN bit |
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