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STM32H7B3AI 数据表(PDF) 82 Page - STMicroelectronics |
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STM32H7B3AI 数据表(HTML) 82 Page - STMicroelectronics |
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82 / 238 page  Symbols Ratings Min Max Unit |VSSx−VSS| Variations between all the different ground pins - 50 mV 1. VIN maximum value must always be respected. Refer to Table 64. I/O current injection susceptibility for the maximum allowed injected current values. 2. To sustain a voltage higher than 4 V the internal pull-up/pull-down resistors must be disabled. 3. This formula has to be applied on power supplies related to the I/O structure described by the pin definition table. Table 20. Current characteristics Symbols Ratings Max Unit ΣIVDD Total current into sum of all VDD power lines (source)(1) 620 mA ΣIVSS Total current out of sum of all VSS ground lines (sink)(1) 620 IVDD Maximum current into each VDD power pin (source)(1) 100 IVSS Maximum current out of each VSS ground pin (sink)(1) 100 IIO Output current sunk or sourced by any I/O and control pin 20 Output current sunk or sourced by Pxy_C pin 1 ΣI(PIN) Total output current sunk by sum of all I/Os and control pins(2) 140 Total output current sourced by sum of all I/Os and control pins(2) 140 IINJ(PIN)(3)(4) Injected current on FT_xxx, TT_xx, RST and B pins except PA4, PA5 −5/+0 Injected current on PA4, PA5 −0/0 ΣIINJ(PIN) Total injected current (sum of all I/Os and control pins)(5) ±25 1. All main power (VDD, VDDA, VDDSMPS, VDDLDO, VDD33USB, VDDMMC) and ground (VSS, VSSA) pins must always be connected to the external power supplies, in the permitted range. 2. This current consumption must be correctly distributed over all I/Os and control pins. The total output current must not be sunk/sourced between two consecutive power supply pins referring to high pin count QFP packages. 3. A positive injection is induced by VIN>VDD while a negative injection is induced by VIN<VSS. IINJ(PIN) must never be exceeded. Refer also to Table 19. Voltage characteristics for the maximum allowed input voltage values. 4. Positive injection is not possible on these I/Os and does not occur for input voltages lower than the specified maximum value. 5. When several inputs are submitted to a current injection, the maximum ∑IINJ(PIN) is the absolute sum of the positive and negative injected currents (instantaneous values). Table 21. Thermal characteristics Symbol Ratings Value Unit TSTG Storage temperature range −65 to +150 °C TJmax Maximum junction temperature 130(1) 1. The junction temperature is limited to 105 °C in the VOS0 voltage range. STM32H7B3xI Absolute maximum ratings DS13139 - Rev 8 page 82/238 |
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