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TMS320VC5507 датащи(PDF) 102 Page - Texas Instruments |
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TMS320VC5507 датащи(HTML) 102 Page - Texas Instruments |
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102 / 108 page ![]() IC10 IC8 IC4 IC3 IC7 IC12 IC5 IC6 IC14 IC2 IC3 IC13 Stop Start Repeated Start Stop SDA SCL IC1 IC11 IC9 SM320VC5507-EP SPRS613 – SEPTEMBER 2009 www.ti.com Figure 5-37. I2C Receive Timings Table 5-40. I2C Signals (SDA and SCL) Timing Requirements CVDD = 1.2 V CVDD = 1.6 V CVDD = 1.35 V NO. STANDARD FAST STANDARD FAST UNIT MODE MODE MODE MODE MIN MAX MIN MAX MIN MAX MIN MAX IC16 tc(SCL) Cycle time, SCL 10 2.5 10 2.5 μs Delay time, SCL high to IC17 td(SCLH–SDAL) SDA low for a repeated 4.7 0.6 4.7 0.6 μs START condition Delay time, SDA low to SCL low for a START and IC18 td(SDAL–SCLL) 4 0.6 4 0.6 μs a repeated START condition IC19 tw(SCLL) Pulse duration, SCL low 4.7 1.3 4.7 1.3 μs IC20 tw(SCLH) Pulse duration, SCL high 4 0.6 4 0.6 μs Delay time, SDA valid to IC21 td(SDA–SCLH) 250 100 250 100 ns SCL high Valid time, SDA valid after IC22 tv(SCLL–SDAV) 0 0 0.9 0 0 0.9 μs SCL low Pulse duration, SDA high IC23 tw(SDAH) between STOP and 4.7 1.3 4.7 1.3 μs START conditions 20 + 20 + IC24 tr(SDA) Rise time, SDA 1000 300 1000 0.1Cb 300 ns 0.1Cb (1) (1) 20 + 20 + IC25 tr(SCL) Rise time, SCL 1000 300 1000 0.1Cb 300 ns 0.1Cb (1) (1) 20 + 20 + IC26 tf(SDA) Fall time, SDA 300 300 300 0.1Cb 300 ns 0.1Cb (1) (1) 20 + 20 + IC27 tf(SCL) Fall time, SCL 300 300 300 0.1Cb 300 ns 0.1Cb (1) (1) Delay time, SCL high to IC28 td(SCLH–SDAH) SDA high for a STOP 4 0.6 4 0.6 μs condition Capacitance for each IC29 Cp 10 10 10 10 pF I2C pin (1) Cb = total capacitance of one bus line in pF. If mixed with HS-mode devices, faster fall-times are allowed. 102 Electrical Specifications Copyright © 2009, Texas Instruments Incorporated Submit Documentation Feedback Product Folder Link(s): SM320VC5507-EP |
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