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U3810BM Datenblatt(PDF) 24 Page - TEMIC Semiconductors |
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U3810BM Datenblatt(HTML) 24 Page - TEMIC Semiconductors |
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24 / 31 page ![]() TELEFUNKEN Semiconductors U3810BM Rev. A1: 19.01.1996 24 (31) Power-on-reset and reset pin The system (U3810BM + microcontroller) is woken up by an initial condition: – line voltage (VL) – ringer (THA) – external supply (ESI) To avoid undefined states of the system when it is powered on, an internal reset clears the internal registers, and maintains pin RESET low during trt. 1.) Power on in speed-up condition (VDD < VSON) LINE LVIO SHUTDOWN VDD CO RESETN 937609 Figure 11 2.) Power on without speed-up (VDD > VSON) LINE LVIO SHUTDOWN VDD CO RESETN 937610 Figure 12 |
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