Introduction bus ic dc/dc converter motor driver ic ripple counter driver ic I/O ic Sensor interface ic sensor ic ip’s E 910.02 Analog multiplexer 8:1 E 910.33 Contact monitor 8 * to GND E 910.34 Contact monitor 8 * to VBAT ÿE 910.35 Contact monitor 2 * 4, adj., par. E 910.36 Contact monitor 2 * 4, par. out E 910.47 Non volatile contact monitor E 910.52 Contact monitor 16 *, ser. out E 910.66 DC motor control with Hall int. ÿ Contact monitor (4 * GND & 4 * VBAT, adjustable, parallel interface) features description ÿ Programmable input current of 1mA / 10mA The IC is developed for automotive applications. It continuously ÿ Supply voltage range VS 5.25 to 25V monitors the status of two groups of switch contacts connected ÿ Supply voltage range VDD 4.75 to 5.25V to GND or VBAT. ÿ Maximum overvoltage protection up to 40V ÿ Low standby current (typical < 10µA) The input currents are compared to internal references. The IC is ÿ Contact status monitoring by comparing the designed to operate with an external resistor of 1kÝ. E910.35 pinning switch resistance with the internal reference ÿ High noise immunity If the switch resistance is less than 1.5kÝ the IC will lead into an ÿ – 40°C to + 125 ºC operating temperature active state (‘1’ for switches to VBAT and ‘0’ for switches to GND). ÿ SO24w package If the resistance will be more than 9kÝ than the IC will switch to the corresponding inactive state. The input current as well as application the tristate driver are activated with the enable pin. Due to the ÿ Automotive electronics tristate outputs the IC can be used in bus configuration. ÿ Monitor for mechanical switches ÿ Monitor for interface levels Block diagram package Pin Name Description 1 VS Supply voltage 2 IN0 Input for switch / voltage sensing 3 IN1 Input for switch / voltage sensing 4 IN2 Input for switch / voltage sensing 5 IN3 Input for switch / voltage sensing 6 IN4 Input for switch / voltage sensing 7 IN5 Input for switch / voltage sensing 8 IN6 9 IN7 10 EN 11 LOAD 12 CLEAR Reset current value register 13 NC Not connected 14 NC Not connected 15 GND Ground 16 OUT7 TTL compatible tristate data port 17 OUT6 TTL compatible tristate data port 18 OUT5 TTL compatible tristate data port 19 OUT4 TTL compatible tristate data port 20 OUT3 TTL compatible tristate data port 21 OUT2 TTL compatible tristate data port 22 OUT1 TTL compatible tristate data port 23 OUT0 TTL compatible tristate data port 24 VDD Logic supply voltage VS 1 24 IN0 2 23 IN1 3 22 IN2 4 21 IN3 5 20 IN4 6 19 IN5 7 18 IN6 8 17 IN7 9 16 Input for switch / voltage sensing EN 10 15 LOAD 11 14 Input for switch / voltage sensing CLEAR 12 13 Chip enable for input current and tristate outputs, active low VDD OUT0 OUT1 OUT2 OUT3 OUT4 OUT5 OUT6 OUT7 GND NC NC SO24 Set current value register VBAT VDD VS Ref. EN IN0 VDD 4 D0 D1 D2 D3 D4 D5 D6 D7 4 IN1 IN2 IN3 8 VS IN6 EN LOAD control 4 Ref. CLEAR EN EN IN7 E910.35 86 external µC 4 IN4 IN5 8 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. Copyright © 2007 ELMOS Reproduction, in part or whole, without the prior written consent of ELMOS, is prohibited. www.elmos.de | [email protected] elmos product catalog 2007/2008 87