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UM1771 Datasheet(PDF) 27 Page - STMicroelectronics |
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UM1771 Datasheet(HTML) 27 Page - STMicroelectronics |
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27 / 38 page ![]() DocID026392 Rev 2 27/38 UM1771 Programming section 38 5. At this step: a) If a problem is detected, the “ready” LED (green) and the “error” LED (red) will switch on without blinking. This means that: - Either the board Id is not recognized by the FW (bad FW versions used). - Or there is a problem with the SPI (no connection between the MCU and the L6474 via the SPI). - Or there is no 5 V - 45 V DC power supply. Figure 22. Starting board (error case) |
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