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AS3715 Datasheet(PDF) 78 Page - ams-OSRAM AG |
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AS3715 Datasheet(HTML) 78 Page - ams-OSRAM AG |
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78 / 159 page ![]() ams Datasheet Page 77 [v1-03] 2015-Aug-10 Document Feedback AS3715 − Detailed Description – System Functions Figure 81: I²C Current Address Read I²C Current Address Read: Shows the format of an I²C current address read access. To keep the access time as small as possible, this format allows a read access without the word address transfer in advance to the data transfer. The bus is idle and the master issues a START condition followed by the Device-Read address. Analogous to Random Read, a single byte transfer is terminated with a not-acknowledge after the 1st register byte. Analogous to Sequential Read an unlimited number of data bytes can be transferred, where the data bytes has to be responded with an acknowledge from the master. For termination of the transmission the master sends a not-acknowledge following the last data byte and a subsequent STOP condition. I²C Parameter Figure 82: I²C Characteristics I²C Characteristics: Shows the key electrical parameter of the I²C interface. The AS3715 is compatible to the NXP two wire specification www.nxp.com/documents/user_manual/UM10204.pdf Version 4.0 Feb 2012 for standard mode and fast mode (no fast mode plus or high speed mode support). Symbol Parameter Conditions Min Typ Max Unit VIL SCL,SDA Low Level input voltage -0.3 0.4 V VIH SCL,SDA High Level input voltage 1.4 VSUP_GPIO V VOH High-Level Output Voltage at -2.0mA 0.8x VSUP_GPIO_lv V VOL Low-Level Output Voltage at 2.0mA 0.2x VSUP_GPIO_lv V CLOAD Capacitive Load 50 pF S DR A data 1 A data 2 A ... data n RA++ RA++ RA++ P N |
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