Datenblatt-Suchmaschine für elektronische Bauteile |
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TLIN1028-Q1 Datenblatt(PDF) 22 Page - Texas Instruments |
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TLIN1028-Q1 Datenblatt(HTML) 22 Page - Texas Instruments |
22 / 35 page EN LIN Bus < tCLEAR tLINBUS tLINBUS tLINBUS tCLEAR EN LIN Bus < tLINBUS < tLINBUS tLINBUS 22 TLIN1028-Q1 SLLSEX4 – AUGUST 2019 www.ti.com Product Folder Links: TLIN1028-Q1 Submit Documentation Feedback Copyright © 2019, Texas Instruments Incorporated Feature Description (continued) Figure 21. No Bus Fault: Entering Sleep Mode with Bus Recessive Condition and Wakeup Figure 22. Bus Fault: Entering Sleep Mode with Bus Stuck Dominant Fault, Clearing, and Wakeup 9.3.9.3 Thermal Shutdown The LIN transmitter is protected by current limiting circuit; however, if the junction temperature of the device exceeds the thermal shutdown threshold, the device puts the LIN transmitter into the recessive state and turns off the VCC regulator. The nRST pin is pulled to ground during a TSD event. Once the over-temperature fault condition has been removed and the virtual junction temperature has cooled beyond the hysteresis temperature, the transmitter is re-enabled. During this fault the device enters a TSD off mode. Once the junction temperature cools, the device enters standby mode as per the state diagram. 9.3.9.4 Under Voltage on VSUP The device contains a power-on reset circuit to avoid false bus messages during under voltage conditions when VSUP is less than UVSUP. 9.3.9.5 Unpowered Device and LIN Bus In automotive applications, some LIN nodes in a system can be unpowered (ignition supplied) while others in the network remain powered by the battery. The device has extremely low unpowered leakage current from the bus, so an unpowered node does not affect the network or load it down. 9.4 Device Functional Modes The TLIN1028-Q1 has three functional modes of operation, normal, sleep, and standby. The next sections describes these modes as well as how the device moves between the different modes. Figure 23 graphically shows the relationship while Table 1 shows the state of pins. Table 1. Operating Modes Mode EN RXD LIN BUS Termination Transmitter nRST Comment Sleep Low Floating Weak Current pull- up Off Ground nRST is internally connected to the LDO output which in sleep mode is pulled to ground |
Ähnliche Teilenummer - TLIN1028-Q1_V01 |
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Ähnliche Beschreibung - TLIN1028-Q1_V01 |
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