BUS IC DC/DC CONVERTER MOTOR DRIVER IC RIPPLE COUNTER DRIVER IC I/O IC SENSOR IC SENSOR INTERFACE IC K-Bus transceiver LIN- / K-Bus transceiver LIN transceiver + VREG ÿ LIN transceiver LIN transceiver + VREG + WD Single wire CAN transceiver CAN transceiver ÿ LIN transceiver E910.43 FEATURES DESCRIPTION PINNING ÿ Supply voltage range VS 6V to 18V The IC interfaces between a µC and a Local Interconnect Network ÿ Supply voltage range VDD 4.5V to 5.5V (LIN) bus-line, mainly in automotive sub bus applications. When ÿ LIN 2.0 compatible interface for pin EN is at High level (VDD), a digital input signal at pin TxD data rates up to 20kBaud is transferred to the fully protected low side driver on pin BUS. ÿ Output slewrate control to reduce EMI The voltage level on pin BUS is detected by a comparator with a ÿ Short circuit current limitation threshold of nominally 50% of the battery supply VS. After pass- ÿ Over temperature protection ing a debounce filter it is valid on pin RxD as a digital signal refer- ÿ Bus-line DC voltage range – 24V to + 30V enced to the digital supply voltage VDD. ÿ Receiver debounce filter ÿ Very low active current consumption EN also statically keeps the high side output INH active. A high to ÿ Very low standby current (typ. < 10 µA) low transition on EN as well as VDD falling under the POR thresh- ÿ Wake up output by LIN-Bus transition and EN, old will dynamically reset INH to high impedance. A debounced battery power on low level on the bus-line for a certain time will set INH to high ÿ – 40°C to + 125°C operating temperature level as well as a - power on condition - on the battery supply ÿ SO 8n package pin VS. PACKAGE Pin Name Description 1 RxD Serial data from IC to µC 2 EN Enable activates transmitter,receive and output INH 3 VDD +5V digital supply 4 TxD Serial data from µC to IC 5 GND Ground 6 BUS LIN-Bus pin 7 VS +12V positive supply 8 INH RxD 1 8 EN 2 7 VDD 3 6 TxD 4 5 INH VS BUS GND Switched battery supply output to activate, e.g. an external voltage regulator APPLICATION ÿ Bus interface for Local Interconnect Network (LIN) communication especially in automobile applications BLOCK DIAGRAM ext. voltage regulator VDD VDD VDD EN INH VBAT VS EN wake up & POR µC BUS RXD control slewrate control TXD Note ELMOS Semiconductor AG (below ELMOS) reserves the right to make changes to the product contained in this publication without notice. ELMOS assumes no responsibility for the use of any circuits described herein, conveys no licence under any patent or other right, and makes no representation that the circuits are free of patent infringement. While the information in this publication has been checked, no responsibility, however, is assumed for inaccuracies. ELMOS does not recommend the use of any of its products in life support applications where the failure or malfunction of the product can reasonably be expected to cause failure of a life-support system or to significantly affect its safety or effectiveness. Products are not authorized for use in such applications. 14 Copyright © 2005 ELMOS Reproduction, in part or whole, without the prior written consent of ELMOS, is prohibited. www.elmos.de | [email protected] elmos product catalog june 2005 15