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L6474PDTR 데이터시트(PDF) 11 Page - STMicroelectronics |
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L6474PDTR 데이터시트(HTML) 11 Page - STMicroelectronics |
11 / 51 page L6474 Electrical characteristics Doc ID 022529 Rev 2 11/51 Logic inputs and outputs V IL Low logic level input voltage 0.8 V VIH High logic level input voltage 2 V IIH High logic level input current (4) V IN = 5 V 1 µA IIL Low logic level input current (5) VIN = 0 V -1 µA VOL Low logic level output voltage (6) VDD = 3.3 V, IOL = 4 mA 0.3 V VDD = 5 V, IOL = 4 mA 0.3 VOH High logic level output voltage VDD = 3.3 V, IOH = 4 mA 2.4 V VDD = 5 V, IOH = 4 mA 4.7 RPU RPD CS pull-up and STBY pull-down resistors CS = GND; STBY/RST = 5 V 335 430 565 k Ω RPUDIR DIR input pull-up resistance DIR = GND 60 85 110 k Ω Ilogic Internal logic supply current 3.3 V VREG externally supplied, internal oscillator 3.7 4.3 mA Ilogic,STBY Standby mode internal logic supply current 3.3 V VREG externally supplied 2 2.5 µA fSTCK Step clock input frequency 2 MHz Internal oscillator and external oscillator driver fosc,i Internal oscillator frequency T j = 25 °C, V REG = 3.3 V -3% 16 +3% MHz fosc,e Programmable external oscillator frequency 8 32 MHz VOSCOUTH OSCOUT clock source high level voltage Internal oscillator 3.3 V VREG externally supplied; IOSCOUT = 4 mA 2.4 V VOSCOUTL OSCOUT clock source low level voltage Internal oscillator 3.3 V VREG externally supplied; IOSCOUT = 4 mA 0.3 V trOSCOUT tfOSCOUT OSCOUT clock source rise and fall time Internal oscillator 20 ns textosc Internal to external oscillator switching delay 3 ms tintosc External to internal oscillator switching delay 1.5 µs SPI fCK,MAX Maximum SPI clock frequency (7) 5 MHz trCK tfCK SPI clock rise and fall time (7) CL = 30 pF 25 ns thCK tlCK SPI clock high and low time (7) 75 ns tsetCS Chip select set-up time (7) 350 ns Table 5. Electrical characteristics (continued) Symbol Parameter Test condition Min. Typ. Max. Unit |
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