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전자부품 데이터시트 검색엔진 |
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전자부품 데이터시트 검색엔진 |
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SRC0 데이터시트(PDF) 15 Page - STMicroelectronics |
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SRC0 데이터시트(HTML) 15 Page - STMicroelectronics |
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15 / 48 page  DocID026008 Rev 2 15/48 SRC0 Waveforms 48 Figure 8. Successful 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. PSHOLD ignored internal pull-down resistor connected to PSHOLD input VCC undervoltage detection ignored PB (1) PSHOLD (2) EN (3) RST Push-button pressed and PB connected to GND tDEBOUNCE tREC processor sets PSHOLD PB released tON_BLANK tON_BLANK expired prior to PB release PSHOLD state detected as high EN remains asserted AM00247bv2 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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