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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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RT6908 датащи(PDF) 7 Page - Richtek Technology Corporation |
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RT6908 датащи(HTML) 7 Page - Richtek Technology Corporation |
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7 / 22 page  RT6908 7 DS6908-01 March 2013 www.richtek.com Copyright 2013 Richtek Technology Corporation. All rights reserved. is a registered trademark of Richtek Technology Corporation. © Parameter Symbol Test Conditions Min Typ Max Unit Logic Inputs (SDA, SCL, EN, EN_I2C) Input High Voltage VIH 1.7 -- -- V Input Low Voltage VIL -- -- 0.6 V Input Leakage Current IIH, IIL VIN = 0 or 3.3V −1 0.01 1 μA Input Capacitance -- 5 -- pF SDA Output Low Voltage VOL ISINK = 6mA -- 0.3 -- V I 2C Timing Characteristics Serial-Clock Frequency fSCL 0 -- 400 kHz Bus Free Time Between STOP and START Conditions tBUF 1.3 -- -- μs Hold Time (Repeated) START Condition tHD, STA 0.6 -- -- μs SCL Pulse-Width Low tLOW 1.3 -- -- μs SCL Pulse-Width High tHIGH 0.6 -- -- μs Setup Time for a Repeated START Condition tSU, STA 0.6 -- -- μs Data Hold Time tHD, DAT 0 -- 800 ns Data Setup Time tSU, DAT 100 -- -- ns SDA and SCL Receiving Rise Time tR 20 + 0.1CB -- 300 ns SDA and SCL Receiving Fall Time tF 20 + 0.1CB -- 300 ns SDA Transmitting Fall Time tF 20 + 0.1CB -- 250 ns Setup Time for STOP Condition tSU, STO 0.6 -- -- μs Bus Capacitance CB -- -- 400 pF Pulse Width of Suppressed Spike tSP -- -- 50 ns Reset Voltage Detector Minimum Operating Voltage AVIN Minimum Voltage for RSTB 2.2 -- -- V VDET Detecting Threshold VTH VDET Falling -- 0.6 -- V VDET Threshold Hysteresis ΔVTH -- 100 -- mV RSTB Output Low Voltage VOL ISINK = 500μA -- -- 0.3 V RSTB Leakage Current ILEAK VRSTB = 5.0V -- 0.01 0.1 μA CRST Charge Current ICRST -- 8 -- μA CRST Threshold VCRST -- 1.25 -- V Boost Converter (AVDD) Adjustable Output Voltage Range VAVDD Register Address = ”00h”, 6 bits, AVDD = (12.7V to 19V) [00h to 3Fh] 12.7 -- 19 V AVDD Regulation Voltage (Default) VAVDD No load 15.444 15.6 15.756 V Oscillator Frequency fOSC 600 750 900 kHz Maximum Duty Cycle -- 90 -- % |
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