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EMC1813 Datenblatt(PDF) 34 Page - Microchip Technology |
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EMC1813 Datenblatt(HTML) 34 Page - Microchip Technology |
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34 / 102 page ![]() Table 6-7. Receive Byte Protocol START Slave Address RD ACK Register Data NACK STOP 1 → 0 YYYY_YYY 1 0 XXh 1 0 → 1 6.8 THERM Pin Considerations Because of the decode method used to determine the I2C address, it is important that the pull-up resistance on the THERM pin be within the tolerances shown in Table 5-2. For tINT_T after power-up, the THERM pin must not be pulled low or the I2C address will not be decoded properly. If the system requirements do not permit these conditions, the THERM pin must be isolated from its hard-wired OR’d bus during this time. One method of isolating this pin is shown in the following figure. Figure 6-1. THERM Pin Isolation +3.3V 22K 4.7K-33K +2.5-5V Shared THERM 1 2 3 4 VDD DP DN THERM/ ADDR Multi-Channel Low-Voltage Remote Di... System Management Bus Protocol © 2018 Microchip Technology Inc. Datasheet DS20005751A-page 34 |
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