BUS IC DC/DC CONVERTER MOTOR DRIVER IC RIPPLE COUNTER DRIVER IC I/O IC SENSOR IC SENSOR INTERFACE IC Analog multiplexer 8:1 Contact monitor 8 * to GND, par. out Contact monitor 8 * to VBAT, par. out Contact monitor 2 * 4, adj., par. out Contact monitor 2 * 4, par. out ÿ Non volatile contact monitor Contact monitor 16 *, ser. out ÿ Non volatile contact monitor FEATURES E910.47 DESCRIPTION PINNING ÿ Supply voltage range VS 6.9V to 19V The IC is designed for use in electric power window systems to ÿ On chip voltage clamping store and display the status of a childproof lock function of the ÿ Under voltage reset rear windows. The actual status is stored in three bits of the ÿ Charge pump to generate programming voltage EEPROM whenever switch activity is detected. The redundant in- ÿ Redundant non - volatile memory formation is checked periodically by a two out of three selection ÿ Periodical check of data consistency and in case of one bit distinguishes from the others, the dominant ÿ Automatic data correction in case of inconsistency information is stored in all three EEPROM cells again. ÿ Two I/Os to detect switch activation and drive LEDs To make sure that programming the memory is successful under ÿ – 40°C to + 85°C operating temperature all supply voltage conditions, the energy is taken from an external ÿ SO8n package capacitor once the programming cycle has started. The capacitor PACKAGE Pin Name Description 1 KISI Output for status; low side driver 2 L1 Input and LED driver 3 VS Supply voltage 4 TEST1 For test only; connect to GND 5 VDD VDD output 6 TEST2 For test only; connect to GND 7 L0 Input and LED driver 8 GND GND KISI 1 8 L1 2 7 VS 3 6 TEST1 4 5 GND L0 TEST2 VDD is charged by an internal voltage regulator. Switch detection and APPLICATION ÿ the start of the programming cycle are disabled by an undervolt- Status IC for switches age detection, while a programming cycle once started will always be completed. Two I/O Pins are used for detecting switch activation as well as driving the LEDs to display the status. An open drain low-side driver output “KISI” is active when the rear window operation is released. Detection of a short to ground, an open load or an overload condition on KISI will be indicated by flashing the red LED with 2Hz. BLOCK DIAGRAM VBAT VS RED GREEN L0 int. Supply VDD L1 control KISI current Limitation Status E² 74 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 © 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 75