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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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PCA9533DP02 датащи(PDF) 14 Page - NXP Semiconductors |
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PCA9533DP02 датащи(HTML) 14 Page - NXP Semiconductors |
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14 / 18 page  Philips Semiconductors Product data sheet PCA9533 4-bit I2C LED dimmer 2004 Oct 01 14 tSP tBUF tHD;STA P P S tLOW tR tHD;DAT tF tHIGH tSU;DAT tSU;STA Sr tHD;STA tSU;STO SDA SCL SU00645 Figure 18. Definition of timing PROTOCOL SCL SDA t HD;STA t SU;DAT t HD;DAT t VD;DAT t f r t t BUF t SU;STA t LOW t HIGH 1 / f SCL START CONDITION (S) BIT 7 MSB (A7) BIT 6 (A6) t VD;ACK SW02333 BIT 7 (D1) STOP CONDITION (P) t SU;STO BIT 8 (D0) ACKNOWLEDGE (A) Figure 19. I2C-bus timing diagram; rise and fall times refer to VIL and VIH PULSE GENERATOR VI VO CL 50 pF VDD DEFINITIONS RL = Load resistor FOR LEDN. RL FOR SDA AND SCL > 1 kΩ (3 mA or less current). CL = Load capacitance includes jig and probe capacitance RT = Termination resistance should be equal to the output impedance ZO of the pulse generators. VDD RT Open D.U.T. RL = 500 Ω SW02334 Figure 20. Test circuitry for switching times |
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