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ATA6628 Datasheet(PDF) 8 Page - ATMEL Corporation |
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ATA6628 Datasheet(HTML) 8 Page - ATMEL Corporation |
8 / 36 page ATA6628/ATA6630 [DATASHEET] 9117I–AUTO–10/14 8 4.2 Silent Mode A falling edge at EN when TXD is high switches the IC into Silent Mode. The TXD Signal has to be logic high during the Mode Select window (see Figure 4-2 on page 8). The transmission path is disabled in Silent Mode. The INH output is switched off and the voltage divider can be activated by the DIV_ON pin. The overall supply current from VBatt is a combination of the IVSsilent = 35µA plus the VCC regulator output current IVCC. The internal slave termination between the LIN pin and the VS pin is disabled in Silent Mode to minimize the current consumption in the event that the LIN pin is short-circuited to GND. Only a weak pull-up current (typically 10µA) between the LIN pin and the VS pin is present. Silent Mode can be activated independently from the actual level on the LIN, WAKE, or KL_15 pins. If an undervoltage condition occurs, NRES is switched to low, and the IC changes its state to Fail-safe Mode. A voltage less than the LIN Pre_Wake detection VLINL at the LIN pin activates the internal LIN receiver and starts the wake- up detection timer. Figure 4-2. Switch to Silent Mode Delay time silent mode td_silent = maximum 20μs Mode select window LIN switches directly to recessive mode td = 3.2μs LIN VCC NRES TXD EN Normal Mode Silent Mode |
Similar Part No. - ATA6628_14 |
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Similar Description - ATA6628_14 |
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