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STM32F405XX Datasheet(PDF) 96 Page - STMicroelectronics |
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STM32F405XX Datasheet(HTML) 96 Page - STMicroelectronics |
96 / 185 page Electrical characteristics STM32F405xx, STM32F407xx 96/185 DocID022152 Rev 4 5.3.8 External clock source characteristics High-speed external user clock generated from an external source The characteristics given in Table 29 result from tests performed using an high-speed external clock source, and under ambient temperature and supply voltage conditions summarized in Table 14. Low-speed external user clock generated from an external source The characteristics given in Table 30 result from tests performed using an low-speed external clock source, and under ambient temperature and supply voltage conditions summarized in Table 14. Table 29. High-speed external user clock characteristics Symbol Parameter Conditions Min Typ Max Unit fHSE_ext External user clock source frequency(1) 1- 50 MHz VHSEH OSC_IN input pin high level voltage 0.7VDD -VDD V VHSEL OSC_IN input pin low level voltage VSS -0.3VDD tw(HSE) tw(HSE) OSC_IN high or low time(1) 1. Guaranteed by design, not tested in production. 5- - ns tr(HSE) tf(HSE) OSC_IN rise or fall time(1) -- 10 Cin(HSE) OSC_IN input capacitance(1) -5 - pF DuCy(HSE) Duty cycle 45 - 55 % IL OSC_IN Input leakage current VSS ≤ VIN ≤ VDD -- ±1 µA Table 30. Low-speed external user clock characteristics Symbol Parameter Conditions Min Typ Max Unit fLSE_ext User External clock source frequency(1) - 32.768 1000 kHz VLSEH OSC32_IN input pin high level voltage 0.7VDD -VDD V VLSEL OSC32_IN input pin low level voltage VSS -0.3VDD tw(LSE) tf(LSE) OSC32_IN high or low time(1) 450 - - ns tr(LSE) tf(LSE) OSC32_IN rise or fall time(1) -- 50 Cin(LSE) OSC32_IN input capacitance(1) -5 - pF DuCy(LSE) Duty cycle 30 - 70 % IL OSC32_IN Input leakage current VSS ≤ VIN ≤ VDD -- ±1 µA 1. Guaranteed by design, not tested in production. |
Similar Part No. - STM32F405XX_13 |
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Similar Description - STM32F405XX_13 |
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