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STM32L010RB bảng dữ liệu(PDF) 71 Page - STMicroelectronics |
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STM32L010RB bảng dữ liệu(HTML) 71 Page - STMicroelectronics |
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71 / 89 page ![]() DS12319 Rev 3 71/89 STM32L010RB Electrical characteristics 82 Figure 20. I/O AC characteristics definition 6.3.14 NRST pin characteristics The NRST pin input driver uses CMOS technology. It is connected to a permanent pull-up resistor, RPU , except when it is internally driven low (see Table 51). Unless otherwise specified, the parameters given in Table 51 are derived from tests performed under ambient temperature and VDD supply voltage conditions summarized in Table 15. 11 Fmax(IO)out Maximum frequency(4) CL = 30 pF, VDD = 2.7 V to 3.6 V -35 MHz CL = 50 pF, VDD = 1.8 V to 2.7 V -10 tf(IO)out tr(IO)out Output rise and fall time CL = 30 pF, VDD = 2.7 V to 3.6 V -6 ns CL = 50 pF, VDD = 1.8 V to 2.7 V -17 -tEXTIpw Pulse width of external signals detected by the EXTI controller -8 - ns 1. The I/O speed is configured using the OSPEEDRx[1:0] bits. Refer to the line reference manual for a description of GPIO Port configuration register. 2. BOOT0/PB9 maximum input frequency is 10 KHz (1.8 V < VDD < 2.7 V) and 5 MHz (2.7 V < VDD <3.6 V). 3. Guaranteed by design. Not tested in production. 4. The maximum frequency is defined in Figure 20. Table 50. I/O AC characteristics(1)(2) (continued) OSPEEDRx [1:0] bit value(1) Symbol Parameter Conditions Min Max(3) Unit ai14131d 10% 90% 50% tr(IO)out OUTPUT EXTERNAL ON CL Maximum frequency is achieved if (tr + tf) ≤ (2/3)T and if the duty cycle is (45-55%) when loaded by CL specified in the table “ I/O AC characteristics”. 10% 50% 90% T tf(IO)out |
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