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BUS IC
DC/DC CONVERTER
MOTOR DRIVER IC
RIPPLE COUNTER
DRIVER IC
I/O 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 y Non volatile contact monitor Contact monitor 16 *, ser. out
SENSOR IC
SENSOR INTERFACE IC
y Non volatile contact monitor
FEATURES y y y y y y y y y y Supply voltage range VS 6.9V to 19V On chip voltage clamping Under voltage reset Charge pump to generate programming voltage Redundant non - volatile memory Periodical check of data consistency Automatic data correction in case of inconsistency Two I/Os to detect switch activation and drive LEDs - 40C to + 85C operating temperature SO8n package To make sure that programming the memory is successful under all supply voltage conditions, the energy is taken from an external capacitor once the programming cycle has started. The capacitor is charged by an internal voltage regulator. Switch detection and APPLICATION y Status IC for switches the start of the programming cycle are disabled by an undervoltage 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. DESCRIPTION The IC is designed for use in electric power window systems to store and display the status of a childproof lock function of the rear windows. The actual status is stored in three bits of the EEPROM whenever switch activity is detected. The redundant information is checked periodically by a two out of three selection and in case of one bit distinguishes from the others, the dominant information is stored in all three EEPROM cells again. PINNING Pin 1 2 3 4 5 6 7 8 Name KISI L1 VS TEST1 VDD TEST2 L0 GND Description Output for status; low side driver Input and LED driver Supply voltage For test only; connect to GND VDD output For test only; connect to GND Input and LED driver GND
KISI L1 VS TEST1 1 2 3 4
E910.47
PACKAGE
8 7 6 5
GND L0 TEST2 VDD
BLOCK DIAGRAM
VBAT
VS RED GREEN L0
int. Supply
VDD
L1
control
KISI
current Limitation Status E
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 (c) 2005 ELMOS Reproduction, in part or whole, without the prior written consent of ELMOS, is prohibited. www.elmos.de | sales@elmos.de
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elmos product catalog june 2005
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