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ZIOL2201 Datasheet(PDF) 82 Page - Renesas Technology Corp |
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ZIOL2201 Datasheet(HTML) 82 Page - Renesas Technology Corp |
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82 / 92 page ![]() ZIOL2xxx Datasheet © 2016 Integrated Device Technology, Inc. 82 April 26, 2016 Figure 10.1 Peak Register Access Scenarios Over-load / Over-temp Reg[20] Peak Counter Reg[21:25] Overload Counter Exception (state signal) Reg[20] monitored physical value exceeds the configured limit overload counter equals configured limit time time time Scenario A Peak Counter Reg[21:25] Overload Counter time Scenario B Read Acces of Peak Counter (via SPI) Value read via SPI In contrast to Figure 10.1 in where the overload situation stops at the point in time in which the driver has been locked Figure 10.2 shows a situation in which the overload situation, especially an over-current situation is kept. This situation occurs for instance due to a low impedance load which is permanently interconnected to the driver output. In addition to that the lock reset is configured in that way that its period is significantly shorter compared with the assert time period. In this case the overload counter does not reach the zero value at the point in time the lock is reset. This in the following time the assert time is shortened and equals approximately the lock time that even passed by. |
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