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MCP19124 Datasheet(PDF) 166 Page - Microchip Technology |
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MCP19124 Datasheet(HTML) 166 Page - Microchip Technology |
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166 / 236 page  FIGURE 28-8: I2C SLAVE, 7-BIT ADDRESS, RECEPTION (SEN = 0, AHEN = 1, DHEN = 1) Receiving Address Receiving Data Received Data P A7 A6 A5 A4 A3 A2 A1 D7 D6 D5 D4 D3 D2 D1 D0 SDA SCL BF CKP S P 12 3 4 5 6 7 8 9 12 3 45 6 7 8 9 12 3 4 5 6 7 8 S Data is read from SSPBUF Cleared by software 9 ACK = 1 ACK ACKDT ACKTIM SSPIF ACK If AHEN = 1, SSPIF is set SSPIF is set on 9th falling edge of SCL, after ACK Address is read from SSBUF Slave software clears ACKDT to ACK the received byte When AHEN = 1: CKP is cleared by hardware and SCL is stretched ACKTIM set by hardware on 8th falling edge of SCL No interrupt after not ACK from Slave Slave software sets ACKDT to not ACK When DHEN = 1: CKP is cleared by hardware on 8th falling edge of SCL CKP set by software, SCL is released ACKTIM cleared by hardware on 9th rising edge of SCL ACKTIM set by hardware on 8th falling edge of SCL Master Releases SDAx to slave for ACK sequence Master sends Stop condition D7 D6 D5 D4 D3 D2 D1 D0 |
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