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MCP19116T-E/MJ bảng dữ liệu(PDF) 73 Page - Microchip Technology |
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MCP19116T-E/MJ bảng dữ liệu(HTML) 73 Page - Microchip Technology |
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73 / 246 page ![]() 2015-2016 Microchip Technology Inc. DS20005479B-page 73 MCP19116/7 FIGURE 10-5: ASYNCHRONOUS RECEPTION FIGURE 10-6: ASYNCHRONOUS RECEPTION WITH ADDRESS DETECT FIGURE 10-7: ASYNCHRONOUS RECEPTION WITH ADDRESS BYTE FIRST START bit bit7/8 bit1 bit0 bit7/8 bit0 STOP bit START bit START bit bit7/8 STOP bit RX (pin) Rcv Buffer Reg Rcv Shift Reg & Read Rcv Buffer Reg RCREG RCIF (interrupt flag) OERR bit CREN Word 1 RCREG Word 2 RCREG STOP bit Note: This timing diagram shows three words appearing on the RX input. The RCREG (receive buffer) is read after the third word, causing the OERR (overrun) bit to be set. RCIDL Start bit bit1 bit0 bit8 bit0 Stop bit Start bit bit8 Stop bit RX (pin) Read Rcv buffer reg RCREG RCIF (interrupt flag) WORD 1 RCREG Note: This timing diagram shows a data byte followed by an address byte.The data byte is not read into the RCREG (receive buffer) Bit8 = 0, Data Byte Bit8 = 1, Address Byte because ADDEN = 0. RCIDL Rcv Buffer Reg Rcv Shift Reg & Start bit bit1 bit0 bit8 bit0 Stop bit Start bit bit8 Stop bit RX (pin) Read Rcv buffer reg RCREG RCIF (interrupt flag) WORD 1 RCREG Bit8 = 1, Address Byte Bit8 = 0, Data Byte Note: This timing diagram shows an address byte followed by an data byte. The data byte is not read into the RCREG (receive buffer) because ADDEN was not updated and still = 0. RCIDL Rcv Buffer Reg Rcv Shift Reg & |
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