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ANSELA 数据表(PDF) 154 Page - Microchip Technology |
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ANSELA 数据表(HTML) 154 Page - Microchip Technology |
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154 / 222 page ![]() FIGURE 27-7: I2C SLAVE, 7-BIT ADDRESS, RECEPTION (SEN = 1, AHEN = 0, DHEN = 0) SEN SEN A7 A6 A5 A4 A3 A2 A1 D7 D6 D5 D4 D3 D2 D1 D0 D7 D6 D5 D4 D3 D2 D1 D0 SDA SCL 1 2 3 4 56 78 9 12 3 4 5 6 7 8 9 1 2 3 4 56 78 9 P SSPIF set on 9th SCL is not held CKP is written to 1 in software, CKP is written to ‘1’ in software, ACK low because falling edge of SCL releasing SCL ACK is not sent. Bus Master sends CKP SSPOV BF SSPIF SSPOV set because SSPBUF is still full. Cleared by software First byte of data is available in SSPBUF ACK= 1 Cleared by software SSPBUF is read Clock is held low until CKP is set to ‘1’ releasing SCL Stop condition S ACK ACK Receive Address Receive Data Receive Data R/W=0 |
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