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STM32L100RB bảng dữ liệu(PDF) 81 Page - STMicroelectronics |
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STM32L100RB bảng dữ liệu(HTML) 81 Page - STMicroelectronics |
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81 / 103 page ![]() DocID024295 Rev 5 81/103 STM32L100C6 STM32L100R8/RB Electrical characteristics 90 Figure 21. USB timings: definition of data signal rise and fall time Table 50. USB DC electrical characteristics Symbol Parameter Conditions Min.(1) 1. All the voltages are measured from the local ground potential. Max.(1) Unit Input levels VDD USB operating voltage(2) 2. To be compliant with the USB 2.0 full speed electrical specification, the USB_DP (D+) pin should be pulled up with a 1.5 k Ω resistor to a 3.0-to-3.6 V voltage range. -3.0 3.6 V VDI(3) 3. Guaranteed by characterization results. Differential input sensitivity I(USB_DP, USB_DM) 0.2 - V VCM(3) Differential common mode range Includes VDI range 0.8 2.5 VSE(3) Single ended receiver threshold - 1.3 2.0 Output levels VOL(4) 4. Guaranteed by test in production. Static output level low RL of 1.5 kΩ to 3.6 V(5) 5. RL is the load connected on the USB drivers. -0.3 V VOH(4) Static output level high RL of 15 kΩ to VSS(5) 2.8 3.6 Table 51. USB: full speed electrical characteristics Driver characteristics(1) 1. Guaranteed by design. Symbol Parameter Conditions Min Max Unit tr Rise time(2) 2. Measured from 10% to 90% of the data signal. For more detailed informations, please refer to USB Specification section 7 (version 2.0). CL = 50 pF 420 ns tf Fall Time(2) CL = 50 pF 4 20 ns trfm Rise/ fall time matching tr/tf 90 110 % VCRS Output signal crossover voltage - 1.3 2.0 V |
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