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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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P87C552 датащи(PDF) 44 Page - NXP Semiconductors |
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P87C552 датащи(HTML) 44 Page - NXP Semiconductors |
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44 / 74 page  Philips Semiconductors Preliminary specification P87C552 80C51 8-bit microcontroller 8K/256 OTP, 8 channel 10 bit A/D, I2C, PWM, capture/compare, high I/O, low voltage (2.7V–5.5V), low power 1999 Mar 30 44 Table 7. Master Receiver Mode STATUS STATUS OF THE I2C APPLICATION SOFTWARE RESPONSE STATUS CODE (S1STA) STATUS OF THE I C BUS AND SIO1 HARDWARE TO/FROM S1DAT TO S1CON NEXT ACTION TAKEN BY SIO1 HARDWARE (S1STA) SIO1 HARDWARE TO/FROM S1DAT STA STO SI AA 08H A START condition has been transmitted Load SLA+R X 0 0 X SLA+R will be transmitted; ACK bit will be received 10H A repeated START diti h b Load SLA+R or X 0 0 X As above condition has been transmitted Load SLA+W X 0 0 X SLA+W will be transmitted; SIO1 will be switched to MST/TRX mode 38H Arbitration lost in NOT ACK bit No S1DAT action or 0 0 0 X I2C bus will be released; SIO1 will enter a slave mode No S1DAT action 1 0 0 X A START condition will be transmitted when the bus becomes free 40H SLA+R has been transmitted; ACK has bi d No S1DAT action or 0 0 0 0 Data byte will be received; NOT ACK bit will be returned been received no S1DAT action 0 0 0 1 Data byte will be received; ACK bit will be returned 48H SLA+R has been t itt d NOT ACK No S1DAT action or 1 0 0 X Repeated START condition will be transmitted transmitted; NOT ACK has been received no S1DAT action or 0 1 0 X STOP condition will be transmitted; STO flag will be reset no S1DAT action 1 1 0 X STOP condition followed by a START condition will be transmitted; STO flag will be reset 50H Data byte has been received; ACK has been d Read data byte or 0 0 0 0 Data byte will be received; NOT ACK bit will be returned returned read data byte 0 0 0 1 Data byte will be received; ACK bit will be returned 58H Data byte has been i d NOT ACK h Read data byte or 1 0 0 X Repeated START condition will be transmitted received; NOT ACK has been returned read data byte or 0 1 0 X STOP condition will be transmitted; STO flag will be reset read data byte 1 1 0 X STOP condition followed by a START condition will be transmitted; STO flag will be reset |
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