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OPTION_REG 数据表(PDF) 171 Page - Microchip Technology |
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OPTION_REG 数据表(HTML) 171 Page - Microchip Technology |
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171 / 222 page ![]() FIGURE 27-20: I2C MASTER MODE WAVEFORM (TRANSMISSION, 7 OR 10-BIT ADDRESS) SDA SCL SSPIF BF (SSPSTAT<0>) SEN A7 A6 A5 A4 A3 A2 A1 ACK = 0 D7 D6 D5 D4 D3 D2 D1 D0 ACK Transmitting Data or Second Half R/W = 0 Transmit Address to Slave 1 2 3 4 5 6 7 8 9 123 4 5 67 8 9 P Cleared by software service routine SSPBUF is written by software from SSP interrupt After Start condition, SEN cleared by hardware S SSPBUF written with 7-bit address and R/W start transmit SCL held low while CPU responds to SSPIF SEN = 0 of 10-bit Address Write SSPCON2<0> SEN = 1 Start condition begins From slave, clear ACKSTAT bit SSPCON2<6> ACKSTAT in SSPCON2 = 1 Cleared by software SSPBUF written PEN R/W Cleared by software |
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