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XRP7620EVB Datasheet(PDF) 3 Page - Exar Corporation |
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XRP7620EVB Datasheet(HTML) 3 Page - Exar Corporation |
3 / 11 page X XR RP P7 76 62 20 0 4 4--C Ch ha an nn ne ell A Ad djju us stta ab blle e C Cu urrrre en ntt II2 2C C C Co on nttrro olllle ed d L LE ED D D Drriiv ve err © 2009 Exar Corporation 3/11 Rev. 1.0.0 Parameter Min. Typ. Max. Units Conditions Thermal Shutdown Hysteresis 15 °C Regulator turns on SDA, SCL Input Logic Low Voltage 0.4 V • SDA, SCL Input Logic High Voltage 1.6 V • SDA, SCL Timeout for Shutdown 90 150 ms I2C SPECIFICATION XRP7620 Address R/W Status Data LED1 Data LED2 Data LED3 Data LED4 Data S 7-bit 1/0 A 8-bit A 8-bit A 8-bit A 8-bit A 8-bit A SP Fig. 2: Data Input Format I2C TIMING CHARACTERISTICS Unless otherwise indicated, VIN = 2.7V to 4.6V, CIN = 1µF, TA= –40°C to 85°C, TJ = –40°C to 100°C. Parameter Symbol Min. Typ. Max. Units Conditions Serial Clock Frequency fSCL 400 KHz Bus Free Time between a STOP and a START tBUF 1.3 µs Hold Time, Repeated START Condition tHD_STA 0.6 µs STOP Condition Setup Time tSU,STO 0.6 ms Data Hold Time tHD,DAT(OUT) 225 900 ns Input Data Hold Time tHD, DAT(IN) 0 900 ns Data Setup Time tSU, DAT 100 ns SCL Clock Low Period tLOW 1.3 ms SCL Clock High Period tHIGH 0.6 ms Rise Time of Both SDA and SCL Signals, receiving tR 20+0.1Cb 300 ns Note 4,5 Fall Time of Both SDA and SCL Signals, Receiving tF 20+0.1Cb 300 ns Note 4,5 Fall Time of SDA Transmitting tF.TX 20+0.1Cb 250 ns Note 4,5, 6 Pulse Width of Spike Suppressed tSP 0 50 ns Note 7 Capacitive Load for each Bus Line Cb 400 pF Note 4 I2C Startup Time after UVLO clears tSRT 1 µs Note 4 Note 1: All parameters tested at TA=25 °C. Specifications over temperature are guaranteed by design. Note 2: LED current matching is calculated by this equation: % 100 × − AVG AVG LED I I I Where IAVG is the average current of 4 channels. Start Condition Acknowledgement sent by the slave Acknowledgement - sent by the slave when R/W=0 - sent by master when R/W=1 Stop Condition |
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