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STM32L152C6 数据表(PDF) 81 Page - STMicroelectronics |
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STM32L152C6 数据表(HTML) 81 Page - STMicroelectronics |
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81 / 121 page  STM32L151x6/8/B, STM32L152x6/8/B Electrical characteristics Doc ID 17659 Rev 8 81/121 Input/output AC characteristics The definition and values of input/output AC characteristics are given in Figure 18 and Table 44, respectively. Unless otherwise specified, the parameters given in Table 44 are derived from tests performed under ambient temperature and VDD supply voltage conditions summarized in Table 14. Table 44. 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 STM32L15xxx reference manual for a description of GPIO Port configuration register. 2. Guaranteed by design. Not tested in production. 3. The maximum frequency is defined in Figure 18. |
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