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L9800 датащи(PDF) 17 Page - STMicroelectronics |
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L9800 датащи(HTML) 17 Page - STMicroelectronics |
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17 / 55 page ![]() Figure 7. Scenario 3 power-up tSLEEP2IDLE VBATT VDDIO IDLE POR V3V3 V1V2 t V Scenario 3: power-up by VBATT without VDDIO (0 V) in sleep to idle transition. VBATT is applied in its operative range (6 V to 18 V). IDLE is set to high and the POR signal is released after tSLEEP2IDLE (about 10 μs). SPI communication is not available and registers are reset. Figure 8. Scenario 4 power-up tSLEEP2LH=10μs+tON VBATT VDDIO IN0 POR V3V3 V1V2 V OUT2D t Scenario 4: power-up by VBATT without VDDIO (0 V) in sleep to limp-home transition. VBATT is applied in its operative range (6 V to 18 V). IN0 (or IN1) is set to high; the POR signal is released after about 10 μs and OUT2D reaches 90% of VBATT in tON time. SPI communication is not available and registers are reset. L9800 Power supply DS14041 - Rev 2 page 17/55 |
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