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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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SRC0 датащи(PDF) 17 Page - STMicroelectronics |
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SRC0 датащи(HTML) 17 Page - STMicroelectronics |
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17 / 48 page  DocID026008 Rev 2 17/48 SRC0 Waveforms 48 Figure 10. Unsuccessful power-up on SRC0 (tON_BLANK expires prior to PB release) 1. PB detection on falling and rising edges. 2. Internal pull-down resistor 300 k is connected to PS HOLD input during power-up. 3. tON_BLANK expires prior to PB release so PSHOLD is checked at its expiration. internal pull-down resistor connected to PSHOLD input PSHOLD ignored PB status ignored VCC undervoltage detection ignored PB (1) PSHOLD (2) EN (3) RST Push-button pressed and PB connected to GND tDEBOUNCE PB released tREC tEN_OFF tON_BLANK tON_BLANK expired prior to PB release PSHOLD state detected as low EN is deasserted AM00248bv2 INT signal is held high during power-up (i.e. until tON_BLANK expires in this case). V CC is considered VCC > VTH+. Note: |
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