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NCV7381 Datasheet(PDF) 5 Page - ON Semiconductor |
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NCV7381 Datasheet(HTML) 5 Page - ON Semiconductor |
5 / 23 page NCV7381 http://onsemi.com 5 Receive−Only Mode STBN EN ERRN Error Flag Wake Flag Normal Mode Error Flag Standby Mode Go−to−sleep Mode Sleep Mode Normal Mode dBDModeChange dBDModeChange dBDModeChange dBDModeChange dGo−to−sleep Error Flag Wake Flag Figure 4. Timing Diagram of Operating Modes Control by the STBN and EN Pins Power Supplies and Power Supply Monitoring NCV7381 is supplied by three pins. VBAT is the main supply both for NCV7381 and the full electronic module. VBAT will be typically connected to the automobile battery through a reverse−polarity protection. VCC is a 5 V low−voltage supply primarily powering the FlexRay bus driver core in a normal−power mode. VIO supply serves to adapt the logical levels of NCV7381 to the host and/or the FlexRay communication controller digital signal levels. All supplies should be properly decoupled by filtering capacitors − see Figure 2 and Table 2. All three supplies are monitored by under−voltage detectors with individual thresholds and filtering times both for under−voltage detection and recovery – see Table 18. Logic Level Adaptation Level shift input VIO is used to apply a reference voltage uVDIG = uVIO to all digital inputs and outputs in order to adapt the logical levels of NCV7381 to the host and/or the FlexRay communication controller digital signal levels |
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