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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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TLE9255WLC датащи(PDF) 36 Page - Infineon Technologies AG |
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TLE9255WLC датащи(HTML) 36 Page - Infineon Technologies AG |
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36 / 100 page  Data Sheet 36 Rev. 1.02 2018-02-02 TLE9255W Fail Safe Functions Figure 31 Undervoltage detection VIO during VIO supply stabilization period after Power on Reset 6.2.5 Long-term Undervoltage detection on VIO If VIO < VIO_UV for more than the glitch filter time tVIO_filter, then the undervoltage detection timer is started. If tVIO_UV_T expires, then a long-term undervoltage is detected. On detection of long-term undervoltage the TLE9255W performs the following actions: • set the bit VIO_LTUV to “1” • perform a mode change to Sleep WUP Sub-Mode only after tSilencehas expired (no bus communication) If VIO > VIO_UV for more than the glitch filter time tVIO_filter, then the timer tVIO_UV_T is stopped and reset. Only an SPI command can reset the undervoltage bit VIO_LTUV. The tVIO_UV_T is configurable in the SPI Register SUPPLY_CTRL. Figure 32 VIO long-term undervoltage detection after power up VCC and VBAT are within the functional range VIO t „0" VIO_UV Status Bit: VIO_UV tVIO_filter „1" Notification disabled VIO t VIO_UV Status Bit: VIO_UV „1" POR Mode Stand-by Mode VBAT OR VCC is in the functional range tVIO_UV_T „0" Sleep WUP Sub-Mode1 tVIO_filter 1) State transition will be performed if the tSilence timer has expired (no CAN bus communication) |
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