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STM32F101X4 Datasheet(PDF) 52 Page - STMicroelectronics |
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STM32F101X4 Datasheet(HTML) 52 Page - STMicroelectronics |
52 / 73 page ![]() Electrical characteristics STM32F101x4, STM32F101x6 52/74 Doc ID 15058 Rev 3 Input/output AC characteristics The definition and values of input/output AC characteristics are given in Figure 21 and Table 35, respectively. Unless otherwise specified, the parameters given in Table 35 are derived from tests performed under the ambient temperature and VDD supply voltage conditions summarized in Table 8. Table 35. I/O AC characteristics(1) 1. The I/O speed is configured using the MODEx[1:0] bits. Refer to the STM32F10xxx reference manual for a description of GPIO Port configuration register. MODEx [1:0] bit value(1) Symbol Parameter Conditions Max Unit 10 fmax(IO)out Maximum frequency (2) 2. The maximum frequency is defined in Figure 21. CL = 50 pF, VDD = 2 V to 3.6 V 2 MHz tf(IO)out Output high to low level fall time CL = 50 pF, VDD = 2 V to 3.6 V 125(3) 3. Guaranteed by design, not tested in production. ns tr(IO)out Output low to high level rise time 125(3) 01 fmax(IO)out Maximum frequency (2) CL= 50 pF, VDD = 2 V to 3.6 V 10 MHz tf(IO)out Output high to low level fall time CL= 50 pF, VDD = 2 V to 3.6 V 25(3) ns tr(IO)out Output low to high level rise time 25(3) 11 Fmax(IO)out Maximum Frequency (2) CL= 30 pF, VDD = 2.7 V to 3.6 V 50 MHz CL = 50 pF, VDD = 2.7 V to 3.6 V 30 MHz CL = 50 pF, VDD = 2 V to 2.7 V 20 MHz tf(IO)out Output high to low level fall time CL = 30 pF, VDD = 2.7 V to 3.6 V 5(3) ns CL = 50 pF, VDD = 2.7 V to 3.6 V 8(3) CL = 50 pF, VDD = 2 V to 2.7 V 12(3) tr(IO)out Output low to high level rise time CL = 30 pF, VDD = 2.7 V to 3.6 V 5(3) CL = 50 pF, VDD = 2.7 V to 3.6 V 8(3) CL = 50 pF, VDD = 2 V to 2.7 V 12(3) -tEXTIpw Pulse width of external signals detected by the EXTI controller 10 ns |
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