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STM32L475VC 数据表(PDF) 129 Page - STMicroelectronics |
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STM32L475VC 数据表(HTML) 129 Page - STMicroelectronics |
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129 / 193 page ![]() DocID027692 Rev 2 129/193 STM32L475xx Electrical characteristics 181 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 22: 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 20 and Table 61, respectively. Unless otherwise specified, the parameters given are derived from tests performed under the ambient temperature and supply voltage conditions summarized in Table 22: General operating conditions. Table 60. 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 |IIO| = 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 |IIO| = 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 |IIO| = 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 19: 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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