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전자부품 데이터시트 검색엔진 |
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전자부품 데이터시트 검색엔진 |
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PIC16F883-E/SO. 데이터시트(PDF) 209 Page - Microchip Technology |
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PIC16F883-E/SO. 데이터시트(HTML) 209 Page - Microchip Technology |
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209 / 338 page  2006-2012 Microchip Technology Inc. DS41291G-page 209 PIC16F882/883/884/886/887 FIGURE 13-22: BUS COLLISION DURING START CONDITION (SCL = 0) FIGURE 13-23: BRG RESET DUE TO SDA ARBITRATION DURING START CONDITION SDA SCL SEN Bus collision occurs, set BCLIF SCL = 0 before SDA = 0, Set SEN, enable Start sequence if SDA = 1, SCL = 1 TBRG TBRG SDA = 0, SCL = 1 BCLIF S SSPIF Interrupt cleared in software Bus collision occurs, set BCLIF SCL =0 before BRG time-out, ‘0’‘0’ ‘0’ ‘0’ SDA SCL SEN Set S Set SEN, enable Start sequence if SDA = 1, SCL = 1 Less than TBRG TBRG SDA = 0, SCL = 1 BCLIF S SSPIF S Interrupts cleared in software Set SSPIF SDA = 0, SCL = 1 SDA pulled low by other master Reset BRG and assert SDA SCL pulled low after BRG time-out Set SSPIF ‘0’ |
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