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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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PIC876 датащи(PDF) 106 Page - Microchip Technology |
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PIC876 датащи(HTML) 106 Page - Microchip Technology |
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106 / 218 page  PIC16F87X DS30292C-page 104 2001 Microchip Technology Inc. FIGURE 10-7: ASYNCHRONOUS RECEPTION WITH ADDRESS DETECT FIGURE 10-8: ASYNCHRONOUS RECEPTION WITH ADDRESS BYTE FIRST TABLE 10-7: REGISTERS ASSOCIATED WITH ASYNCHRONOUS RECEPTION START bit bit1 bit0 bit8 bit0 STOP bit START bit bit8 STOP bit RC7/RX/DT (pin) Load RSR Read RCIF Word 1 RCREG Bit8 = 0, Data Byte Bit8 = 1, Address Byte Note: This timing diagram shows a data byte followed by an address byte. The data byte is not read into the RCREG (receive buffer) because ADDEN = 1. START bit bit1 bit0 bit8 bit0 STOP bit START bit bit8 STOP bit RC7/RX/DT (pin) Load RSR Read RCIF Word 1 RCREG Bit8 = 1, Address Byte Bit8 = 0, Data Byte Note: This timing diagram shows a data byte followed by an address byte. The data byte is not read into the RCREG (receive buffer) because ADDEN was not updated and still = 0. 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 ADDEN FERR OERR RX9D 0000 000x 0000 000x 1Ah RCREG USART Receive 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 locations read as '0'. Shaded cells are not used for asynchronous reception. Note 1: Bits PSPIE and PSPIF are reserved on PIC16F873/876 devices; always maintain these bits clear. |
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