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L9788 数据表(PDF) 36 Page - STMicroelectronics |
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L9788 数据表(HTML) 36 Page - STMicroelectronics |
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36 / 264 page ![]() Operation behavior L9788 36/264 DS12308 Rev 4 Figure 8. Power hold diagram KEY_IN_DET WK_IN_DET WAKE_UP_EOT_DET WAKE_UP_CAN_DET CHIP STATUS PHOLD_EN MSC_CONFIG_REG1[0] PHOLD_TIMEOUT MSC_CONFIG_REG1[2:1] PHOLD_STATUS MSC_READ12_FRAME1[0] PHOLD_COUNTER (internal counter) t POWER HOLD FUNCTION OFF OFF ON ON ON OFF 01 10 timeout (1) (2) (3) (4) (5) (1) The timeout counter is cleared on the detection of at least one of the power up sources. (2) The timeout counter is cleared if MSC disables the PHOLD function, MRD is switched off, a power down sequence is started. (4) The PHOLD_EN and the PHOLD_STATUS bits are clear along with the power down sequence. (5) A new MSC setting for the timeout makes the timeout counter clear and restart. (2) (2) (2) (4) (3) The counter has reached the timeout, MRD is switched off, a power down sequence is started. GADG2411161503PS |
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