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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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AMC7812SPAPR датащи(PDF) 11 Page - Texas Instruments |
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AMC7812SPAPR датащи(HTML) 11 Page - Texas Instruments |
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11 / 92 page  SDA Sr Sr t FDA t RDA t SU, STA t HD, STA P SCL t HD, DAT t SU, DAT t RCL1 (1) t RCL1 (1) t HIGH t LOW t LOW t RCL t FCL t HIGH t SU, STO =CurrentSourcePull-Up =ResistorPull-Up Sr=RepeatedSTARTCondition P=STOPCondition AMC7812 www.ti.com SBAS513E – JANUARY 2011 – REVISED SEPTEMBER 2013 (1) First rising edge of the SCL signal after Sr and after each acknowledge bit. Figure 2. Timing for High-Speed (Hs) Mode Devices on the I2C Bus TIMING CHARACTERISTICS: SDA and SCL for Hs Mode (1) At –40°C to +105°C, AVDD = 4.5V to 5.5V, DVDD = 2.7V to 5.5V, AGND = DGND = 0V, and IOVDD = 2.7V to 5.5V, unless otherwise noted. CB = 10pF to 100pF CB = 400pF PARAMETER MIN MAX MIN MAX UNIT fSCL (2) SCL clock frequency 0 3.4 0 1.7 MHz tSU, STA Setup time for (repeated) start condition 160 — 160 — ns tHD, STA Hold time (repeated) start condition 160 — 160 — ns tLOW Low period of the SCL clock 160 — 320 — ns tHIGH High period of the SCL clock 60 — 120 — ns tSU, DAT Data setup time 10 — 10 — ns tHD, DAT Data hold time 0 70 0 150 ns tRCL Rise time of SCL signal 10 40 20 80 ns Rise time of SCL signal after a repeated start condition tRCL1 10 80 20 160 ns and after an acknowledge bit tFCL Fall time of SCL signal 10 40 20 80 ns tRDA Rise time of SDA signal 10 80 20 160 ns tFDA Fall time of SDA signal 10 80 20 160 ns tSU, STO Set-up time for stop condition 160 — 160 — ns CB (3) Capacitive load for SDA and SCL lines 10 100 — 400 pF tSP Pulse width of spike suppressed 0 10 0 10 ns (1) All values refer to VIHmin and VILmax levels. (2) An SCL operating frequency of at least 1kHz is recommended to avoid activating the I2C timeout function. See the Timeout Function section for details. (3) For bus line loads where CB is between 100pF and 400pF, the timing parameters must be linearly interpolated. Copyright © 2011–2013, Texas Instruments Incorporated Submit Documentation Feedback 11 Product Folder Links: AMC7812 |
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