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DM385 Datasheet(PDF) 211 Page - Texas Instruments |
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DM385 Datasheet(HTML) 211 Page - Texas Instruments |
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211 / 281 page  25 23 19 18 22 27 20 21 17 18 28 Stop Start Repeated Start Stop I2C[x]_SDA I2C[x]_SCL 16 26 24 DM385, DM388 www.ti.com SPRS821D – MARCH 2013 – REVISED DECEMBER 2013 Table 8-41. Switching Characteristics Over Recommended Operating Conditions for I2C Output Timings (see Figure 8-45) OPP100/OPP120/Turbo/Nitro STANDARD NO. PARAMETER FAST MODE UNIT MODE MIN MAX MIN MAX 16 tc(SCL) Cycle time, SCL 10 2.5 µs Setup time, SCL high before SDA low (for a repeated START 17 tsu(SCLH-SDAL) 4.7 0.6 µs condition) Hold time, SCL low after SDA low (for a START and a repeated 18 th(SDAL-SCLL) 4 0.6 µs START condition) 19 tw(SCLL) Pulse duration, SCL low 4.7 1.3 µs 20 tw(SCLH) Pulse duration, SCL high 4 0.6 µs 21 tsu(SDAV-SCLH) Setup time, SDA valid before SCL high 250 100 ns 22 th(SCLL-SDAV) Hold time, SDA valid after SCL low (for I2C bus devices) 0 3.45 0 0.9 µs Pulse duration, SDA high between STOP and START 23 tw(SDAH) 4.7 1.3 µs conditions 20 + 0.1Cb 24 tr(SDA) Rise time, SDA 1000 300 ns (1) 20 + 0.1Cb 25 tr(SCL) Rise time, SCL 1000 300 ns (1) 20 + 0.1Cb 26 tf(SDA) Fall time, SDA 300 300 ns (1) 20 + 0.1Cb 27 tf(SCL) Fall time, SCL 300 300 ns (1) 28 tsu(SCLH-SDAH) Setup time, SCL high before SDA high (for STOP condition) 4 0.6 µs 29 Cp Capacitance for each I2C pin 10 10 pF (1) Cb = total capacitance of one bus line in pF. If mixed with HS-mode devices, faster fall-times are allowed. Figure 8-45. I2C Transmit Timing Copyright © 2013, Texas Instruments Incorporated Peripheral Information and Timings 211 Submit Documentation Feedback Product Folder Links: DM385 DM388 |
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