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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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STM32F303VB датащи(PDF) 59 Page - STMicroelectronics |
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STM32F303VB датащи(HTML) 59 Page - STMicroelectronics |
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59 / 133 page  STM32F302xx/STM32F303xx Electrical characteristics Doc ID 023353 Rev 5 59/133 6.3.2 Operating conditions at power-up / power-down The parameters given in Table 23 are derived from tests performed under the ambient temperature condition summarized in Table 22. 6.3.3 Embedded reset and power control block characteristics The parameters given in Table 24 are derived from tests performed under ambient temperature and VDD supply voltage conditions summarized in Table 22. Table 23. Operating conditions at power-up / power-down Symbol Parameter Conditions Min Max Unit tVDD VDD rise time rate 0 ∞ µs/V VDD fall time rate 20 ∞ tVDDA VDDA rise time rate 0 ∞ VDDA fall time rate 20 ∞ Table 24. Embedded reset and power control block characteristics Symbol Parameter Conditions Min Typ Max Unit VPOR/PDR (1) 1. The PDR detector monitors VDD and also VDDA (if kept enabled in the option bytes). The POR detector monitors only VDD. Power on/power down reset threshold Falling edge 1.8(2) 2. The product behavior is guaranteed by design down to the minimum VPOR/PDR value. 1.88 1.96 V Rising edge 1.84 1.92 2.0 V VPDRhyst (1) PDR hysteresis - 40 - mV tRSTTEMPO (3) 3. Guaranteed by design, not tested in production POR reset temporization 1.5 2.5 4.5 ms |
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