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STM32L412RBI6PTR 数据表(PDF) 133 Page - STMicroelectronics |
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STM32L412RBI6PTR 数据表(HTML) 133 Page - STMicroelectronics |
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133 / 192 page  DS12469 Rev 8 133/192 STM32L412xx Electrical characteristics 164 In the user application, the number of I/O pins which can drive current must be limited to respect the absolute maximum rating specified in Section 6.2: • The sum of the currents sourced by all the I/Os on VDDIOx, plus the maximum consumption of the MCU sourced on VDD, cannot exceed the absolute maximum rating ΣIVDD (see Table 18: Voltage characteristics). • The sum of the currents sunk by all the I/Os on VSS, plus the maximum consumption of the MCU sunk on VSS, cannot exceed the absolute maximum rating ΣIVSS (see Table 18: Voltage characteristics). Output voltage levels Unless otherwise specified, the parameters given in the table below are derived from tests performed under the ambient temperature and supply voltage conditions summarized in Table 21: General operating conditions. All I/Os are CMOS- and TTL-compliant (FT OR TT unless otherwise specified). Input/output AC characteristics The definition and values of input/output AC characteristics are given in Figure 29 and Table 71, respectively. Table 70. Output voltage characteristics(1) Symbol Parameter Conditions Min Max Unit VOL Output low level voltage for an I/O pin CMOS port(2) |IIO| = 8 mA VDDIOx ≥ 2.7 V -0.4 V VOH Output high level voltage for an I/O pin VDDIOx-0.4 - VOL(3) Output low level voltage for an I/O pin TTL port(2) |IIO| = 8 mA VDDIOx ≥ 2.7 V -0.4 VOH(3) Output high level voltage for an I/O pin 2.4 - VOL(3) Output low level voltage for an I/O pin |I IO| = 20 mA VDDIOx ≥ 2.7 V -1.3 VOH(3) Output high level voltage for an I/O pin VDDIOx-1.3 - VOL(3) Output low level voltage for an I/O pin |I IO| = 4 mA VDDIOx ≥ 1.62 V -0.45 VOH(3) Output high level voltage for an I/O pin VDDIOx-0.45 - VOL(3) Output low level voltage for an I/O pin |I IO| = 2 mA 1.62 V ≥ VDDIOx ≥ 1.08 V -0.35ₓVDDIOx VOH(3) Output high level voltage for an I/O pin 0.65ₓVDDIOx - VOLFM+ (3) Output low level voltage for an FT I/O pin in FM+ mode (FT I/O with "f" option) |IIO| = 20 mA VDDIOx ≥ 2.7 V -0.4 |IIO| = 10 mA VDDIOx ≥ 1.62 V -0.4 |IIO| = 2 mA 1.62 V ≥ VDDIOx ≥ 1.08 V -0.4 1. The IIO current sourced or sunk by the device must always respect the absolute maximum rating specified in Table 18: Voltage characteristics, and the sum of the currents sourced or sunk by all the I/Os (I/O ports and control pins) must always respect the absolute maximum ratings ΣIIO. 2. TTL and CMOS outputs are compatible with JEDEC standards JESD36 and JESD52. 3. Guaranteed by design. |
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