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PIC12LF1501 датащи(PDF) 198 Page - Microchip Technology |
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PIC12LF1501 датащи(HTML) 198 Page - Microchip Technology |
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198 / 352 page ![]() PIC16(L)F1503 DS40001607D-page 198 2011-2015 Microchip Technology Inc. FIGURE 21-34: BUS COLLISION DURING START CONDITION (SCLX = 0) FIGURE 21-35: BRG RESET DUE TO SDA ARBITRATION DURING START CONDITION SDAx SCLx SEN bus collision occurs. Set BCLxIF. SCLx = 0 before SDAx = 0, Set SEN, enable Start sequence if SDAx = 1, SCLx = 1 TBRG TBRG SDAx = 0, SCLx = 1 BCLxIF S SSPxIF Interrupt cleared by software bus collision occurs. Set BCLxIF. SCLx = 0 before BRG time-out, ‘0’‘0’ ‘0’ ‘0’ SDAx SCLx SEN Set S Less than TBRG TBRG SDAx = 0, SCLx = 1 BCLxIF S SSPxIF S Interrupts cleared by software set SSPxIF SDAx = 0, SCLx = 1, SCLx pulled low after BRG time-out Set SSPxIF ‘0’ SDAx pulled low by other master. Reset BRG and assert SDAx. Set SEN, enable Start sequence if SDAx = 1, SCLx = 1 |
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