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STM32L151VB-A 数据表(PDF) 86 Page - STMicroelectronics |
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STM32L151VB-A 数据表(HTML) 86 Page - STMicroelectronics |
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86 / 130 page  Electrical characteristics STM32L151x6/8/B-A STM32L152x6/8/B-A 86/130 DocID024330 Rev 5 Input/output AC characteristics The definition and values of input/output AC characteristics are given in Figure 19 and Table 45, respectively. Unless otherwise specified, the parameters given in Table 45 are derived from tests performed under ambient temperature and VDD supply voltage conditions summarized in Table 14. Table 45. I/O AC characteristics(1) OSPEEDRx [1:0] bit value(1) Symbol Parameter Conditions Min Max(2) Unit 00 fmax(IO)out Maximum frequency(3) CL = 50 pF, VDD = 2.7 V to 3.6 V - 400 kHz CL = 50 pF, VDD = 1.65 V to 2.7 V - 400 tf(IO)out tr(IO)out Output rise and fall time CL = 50 pF, VDD = 2.7 V to 3.6 V - 625 ns CL = 50 pF, VDD = 1.65 V to 2.7 V - 625 01 fmax(IO)out Maximum frequency(3) CL = 50 pF, VDD = 2.7 V to 3.6 V - 2 MHz CL = 50 pF, VDD = 1.65 V to 2.7 V - 1 tf(IO)out tr(IO)out Output rise and fall time CL = 50 pF, VDD = 2.7 V to 3.6 V - 125 ns CL = 50 pF, VDD = 1.65 V to 2.7 V - 250 10 Fmax(IO)out Maximum frequency(3) CL = 50 pF, VDD = 2.7 V to 3.6 V - 10 MHz CL = 50 pF, VDD = 1.65 V to 2.7 V - 2 tf(IO)out tr(IO)out Output rise and fall time CL = 50 pF, VDD = 2.7 V to 3.6 V - 25 ns CL = 50 pF, VDD = 1.65 V to 2.7 V - 125 11 Fmax(IO)out Maximum frequency(3) CL = 50 pF, VDD = 2.7 V to 3.6 V - 50 MHz CL = 50 pF, VDD = 1.65 V to 2.7 V - 8 tf(IO)out tr(IO)out Output rise and fall time CL = 30 pF, VDD = 2.7 V to 3.6 V - 5 ns CL = 50 pF, VDD = 1.65 V to 2.7 V - 30 -tEXTIpw Pulse width of external signals detected by the EXTI controller -8 - 1. The I/O speed is configured using the OSPEEDRx[1:0] bits. Refer to the reference manual for a description of GPIO Port configuration register. 2. Guaranteed by design. 3. The maximum frequency is defined in Figure 19. |
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