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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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STLUX385ATR датащи(PDF) 86 Page - STMicroelectronics |
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STLUX385ATR датащи(HTML) 86 Page - STMicroelectronics |
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86 / 126 page  Electrical characteristics STLUX 86/126 DocID027870 Rev 1 12.3.1 VOUT external capacitor The stabilization of the main regulator is achieved by connecting an external capacitor CVOUT(c) to the VOUT pin. The CVOUT is specified in Section 12.3: Operating conditions. Care should be taken to limit the series inductance to less than 15 nH. Figure 15. External capacitor CVOUT 12.3.2 Supply current characteristics The STLUX supply current is calculated by summing the supply base current in the desired operating mode as per Table 72, with the peripheral supply current value reported in Table 74 on page 90 and Table Table 75 on page 92. For example, considering an application where: fMASTER = fCPU = 16 MHz provided by HSI internal RC oscillator CPU code execution in Flash All base peripheral actives: I2C, UART, DALI, ITC, GPIO0, SysTmrWWDG and IWDG ADC conversion frequency fADC = 5.3 MHz ACU (comparator and DAC units) active 6 PWM toggling at fPWM = 0.5 MHz provided by 6 SMEDs running at fSMED = 12 MHz (NPWM = 6). Table 71. Operating conditions at power-up/power-down Symbol Parameter Conditions Min.(1) 1. Guaranteed by design, not tested in production. Typ. Max.(1) Unit tVDD VDD rise time rate 2 µs/V 1 sec./V(2) 2. Power supply ramp must be monotone. VDD fall time rate 2 µs/V 1 sec./V(2) tTEMP Reset release delay VDD rising 3 ms VIT+ Power-on reset threshold 2.65 2.8 2.98 V VIT- Brownout reset threshold 2.58 2.73 2.88 VHYS(BOR) Brownout reset hysteresis 70 mV c. ESR is the equivalent series resistance and ESL is the equivalent inductance. |
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