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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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TMP93CS44 датащи(PDF) 166 Page - Toshiba Semiconductor |
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TMP93CS44 датащи(HTML) 166 Page - Toshiba Semiconductor |
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166 / 224 page  TMP93CS44/S45 2004-02-10 93CS44-164 (5) Restart Restart is used to change the direction of data transfer between a master device and a slave device during transferring data. The following explains how to restart the TMP93CS44/S45. Clear 0 to the <MST>, <TRX>, and <BB> and set 1 to the <PIN>. The SDA pin retains the high level and the SCL pin is released. Since a stop condition is not generated on the bus, the bus is assumed to be in a busy state from other devices. And confirm SCL pin, that SCL pin is released and become bus-free state by SBISR<BB> = “0” or signal level “1” of SCL pin in port mode. Test the <LRB> until it becomes 1 to check that the SCL line of the bus is not set to low level by other devices. After confirming that the bus stays in a free state, generate a start condition with procedure (2). In order to meet setup time when restarting, take at least 4.7 µs of waiting time by software from the time of restarting to confirm that the bus is free until the time to generate the start condition. Figure 3.10.17 Timing Diagram when Restarting the TMP93CS44/S45 <LRB> SCL (Bus) SCL pin SDA pin <PIN> 4.7 µs (Min) <BB> Start condition “0” → <MST> “0” → <TRX> “0” → <BB> “1” → <PIN> “1” → <MST> “1” → <TRX> “1” → <BB> “1” → <PIN> 9 |
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