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TSC2007IPWR 数据表(PDF) 6 Page - Texas Instruments |
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TSC2007IPWR 数据表(HTML) 6 Page - Texas Instruments |
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6 / 41 page  www.ti.com TIMING INFORMATION t HD, STA t SU, DAT t HD, DAT t SU, STA t SU, STO t HD, STA t LOW t HIGH t R t F t BUF SDA START CONDITION START CONDITION STOP CONDITION REPEATED START CONDITION SCL TIMING REQUIREMENTS: I2C Standard Mode (SCL = 100kHz) TSC2007 SBAS405 – MARCH 2007 Figure 1. Detailed I/O Timing All specifications typical at –40 °C to +85°C, V DD = 1.6V, unless otherwise noted. 2-WIRE STANDARD MODE PARAMETERS TEST CONDITIONS MIN TYP MAX UNIT SCL clock frequency fSCL 0 100 kHz Bus free time between a STOP and START condition tBUF 4.7 µs Hold time (repeated) START condition tHD, STA 4.0 µs Low period of SCL clock tLOW 4.7 µs High period of the SCL clock tHIGH 4.0 µs Setup time for a repeated START condition tSU, STA 4.7 µs Data hold time tHD, DAT 0 3.45 µs Data setup time tSU, DAT 250 ns Rise time for both SDA and SCL clock signals (receiving) tR Cb = total bus capacitance 1000 ns Fall time for both SDA and SCL clock signals (receiving) tF Cb = total bus capacitance 300 ns Fall time for both SDA and SCL clock signals (transmitting) tOF Cb = total bus capacitance 250 ns Setup time for STOP condition tSU, STO 4.0 µs Capacitive load for each bus line Cb Cb = total capacitance of one bus line in pF 400 pF 8 bits 40 SCL + 127 CCLK, VDD = 1.8V 434.7 µs Cycle time 12 bits 49 SCL + 148 CCLK, VDD = 1.8V 570.9 µs 8 bits VDD = 1.8V 2.3 kSPS Effective throughput 12 bits VDD = 1.8V 1.75 kSPS 8 bits VDD = 1.8V 16.1 kHz Equivalent rate = effective throughput × 7 12 bits VDD = 1.8V 12.26 kHz 6 Submit Documentation Feedback |
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