BUS IC DC/DC CONVERTER MOTOR DRIVER IC RIPPLE COUNTER DRIVER IC I/O IC SENSOR IC SENSOR INTERFACE IC ÿ K-Bus transceiver LIN- / K-Bus transceiver LIN transceiver + VREG LIN transceiver LIN transceiver + VREG + WD Single wire CAN transceiver CAN transceiver ÿ K-Bus transceiver E910.05 FEATURES DESCRIPTION PINNING ÿ Supply voltage range VS 6.9V to 19V The IC is designed for communication via bidirectional serial data ÿ Supply voltage range VDD 4.5V to 5.5V channels. In addition to the level conversion of transmit and re- ÿ Data rate up to 9.600 Baud ceive signals from the micro processor’s voltage level to the 12V ÿ Bus-line input voltage range from – 24V to + 30V bus level, the device includes plausibility checks in order to guar- (+40V for t < 0.5s) antee undisturbed bus communication in case of corrupted data ÿ Internal monitoring of prohibited conditions from the micro controller. ÿ Output slewrate control to reduce EMI ÿ Very low standby current (30µA typical) Undefined states are avoided during low voltage conditions by ÿ Useable as diagnostic interface to ISO 9141 means of a Power-on-Reset which blocks the outputs. The inputs ÿ – 40°C to + 125°C operating temperature feature internal pull-up and pull-down current sources to main- ÿ SO14n package tain defined levels. APPLICATION ÿ The bus pins TRM and REC feature a wide input voltage range Automotive low speed bus systems from – 24V to + 40V independent of VS and VDD. This ensures that in case of missing ground or power supply connection the operation of other devices using the bus is not affected. BLOCK DIAGRAM PACKAGE Pin Name Description 1 RxMI Receive data from MI-Bus 2 MIR MI-Bus input 3 GND Ground 4 VDD +5V supply 5 TRM Transmitter output 6 REC K-Bus input 7 VS +12V supply 8 PU Switching pull-up between VDD and VS 9 MI MI-mode, disables slewrate control on TRM 10 SEN/STA Status of transmit path 11 TxD Transmit data to TRM 12 BCEN Enable bit compare function 13 RxD Receive data from K-Bus 14 NRxD Inverted RxD RxMI 1 14 NRxD MIR 2 13 RxD GND 3 12 BCEN VDD 4 11 TxD TRM 5 10 SEN/STA REC 6 9 MI VS 7 8 PU VBAT VS VDD VDD REC RxD NRxD Ref. 12 TRM µC TxD BCEN SEN/STA control slewrate control & currentlimitation PU MI MIR RxMI Ref.5 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. 8 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 9