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Motore di ricerca datesheet componenti elettronici |
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Motore di ricerca datesheet componenti elettronici |
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STM32F427AI Scheda tecnica(PDF) 136 Page - STMicroelectronics |
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STM32F427AI Scheda tecnica(HTML) 136 Page - STMicroelectronics |
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136 / 240 page  Electrical characteristics STM32F427xx STM32F429xx 136/240 DS9405 Rev 12 All I/Os are CMOS and TTL compliant (no software configuration required). Their characteristics cover more than the strict CMOS-technology or TTL parameters. The coverage of these requirements for FT I/Os is shown in Figure 35. RPU Weak pull-up equivalent resistor(6) All pins except for PA10/PB12 (OTG_FS_ID, OTG_HS_ID) VIN = VSS 30 40 50 kΩ PA10/PB12 (OTG_FS_ID, OTG_HS_ID) 710 14 RPD Weak pull- down equivalent resistor(7) All pins except for PA10/PB12 (OTG_FS_ID, OTG_HS_ID) VIN = VDD 30 40 50 PA10/PB12 (OTG_FS_ID, OTG_HS_ID) 710 14 CIO(8) I/O pin capacitance - - 5 - pF 1. Specified by design. 2. Tested in production. 3. With a minimum of 200 mV. 4. Leakage could be higher than the maximum value, if negative current is injected on adjacent pins, refer to Table 56: I/O current injection susceptibility 5. To sustain a voltage higher than VDD +0.3 V, the internal pull-up/pull-down resistors must be disabled. Leakage could be higher than the maximum value, if a negative current is injected on adjacent pins. Refer to Table 56: I/O current injection susceptibility 6. Pull-up resistors are designed with a true resistance in series with a switchable PMOS. This PMOS contribution to the series resistance is minimum (~10% order). 7. Pull-down resistors are designed with a true resistance in series with a switchable NMOS. This NMOS contribution to the series resistance is minimum (~10% order). 8. Hysteresis voltage between Schmitt trigger switching levels. Evaluated by characterization. Table 57. I/O static characteristics (continued) Symbol Parameter Conditions Min Typ Max Unit |
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