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STW4810 Datasheet(PDF) 53 Page - STMicroelectronics |
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STW4810 Datasheet(HTML) 53 Page - STMicroelectronics |
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53 / 72 page  STw4810 5 Electrical and timing characteristics Rev3 53/72 5.4 Digital specifications 5.4.1 CMOS input/output static characteristics: I2C interface 5.4.2 CMOS input/output dynamic characteristics: I2C interface Table 43. CMOS input/output static characteristics: I²C interface Symbol Description Test conditions Min. Typ. Max. Units I²C interface(1) 1. Vio is for VIO_VMEM VIL Low level input voltage 0.3*VIO V VIH High level input voltage 0.7*VIO V IIL Low level input current -1.0 1.0 µA IIH High level input current -1.0 1.0 µA VOL Low level output voltage IOL = 3mA (with open drain or open collector) 0.2*VIO V VOH High level output voltage IOL = 3mA (with open drain or open collector) 0.8*VIO V Table 44. CMOS input/output dynamic characteristics: I²C interface Symbol Description Min. Typ. Max. Units I²C interface ( Figure 8) Fscl Clock frequency 400 Khz thigh Clock pulse width high 600 ns tlow Clock pulse width low 1300 ns tr SDA, SCL, USBSDA, USBSCL rise time 20+0.1*Cb (1) 1. Cb = total capacitance of one bus line in pF 300 ns tf SDA, SCL, USBSDA, USBSCL fall time 20+0.1*Cb 300 ns thd_sta Start condition hold time 600 ns tsu_sta Start condition set up time 600 ns thd_dat Data input hold time 0 ns tsu_dat Data input set up time 250 ns tsu_sto Stop condition set up time 600 ns tbuf Bus free time 1300 ns Cb Capacitive load for each bus line 400 pF |
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