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SC5358 Datasheet(PDF) 4 Page - Silan Microelectronics Joint-stock |
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SC5358 Datasheet(HTML) 4 Page - Silan Microelectronics Joint-stock |
4 / 9 page SC5358 HANGZHOU SILAN MICROELECTRONICS CO.,LTD REV:1.1 2004.08.03 Http: www.silan.com.cn Page 4 of 9 FUNCTION DESCRIPTION 1. I2C bus interface SC5358 is connected to I 2C bus via the SCL and SDA, controlled by MCU. Date validity A data on the SDA line must be stable when the SCL line is high state. It can be changed only when the SCL line is low state. Please refer to the figure below. Start and stop conditions A start condition is activated when the SCL is high state and the SDA shifts from high to low state. A stop condition is activated when the SCL is high state and the SDA shifts from low to high state. Please refer to the figure below. SDA SCL start condition stop condition Start and stop conditions are generated by MCU. The buses are busy after a start condition is activated and are idle after a while when a stop condition is activated. Byte format Every byte transmitted to the SDA line consists of 8 bits. Each byte must be followed by an acknowledge bit. The MSB is transmitted first. During the 9th clock pulse, MCU puts a resistive high level on the SDA line and waits for acknowledge signal. As a peripheral SC5358 must pull down the SDA line if acknowledging, or else keeps high state. Please refer to the figure below. |
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