lm9011 National Semiconductor Corporation, lm9011 Datasheet
lm9011
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... LM9011 Electronic Ignition Interface General Description The LM9011 is an interface circuit which integrates the tim- ing detection and logic control functions required for an automotive electronic ignition system into one device. A VRS interface is provided for crankshaft position informa- tion via a toothed-wheel. Four voltage comparators are provided for hardware diag- nostics ...
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Absolute Maximum Ratings Voltage S_HI Voltage VR_HI and VR_LO Inputs Comparator Inputs Timing Interface Inputs ESD Susceptibility (Note 3) Maximum Junction Temperature Storage Temperature Range Lead Soldering Information: Vapor Phase (60 Seconds) Infrared (15 Seconds) DC Electrical Characteristics , -40˚C ...
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DC Electrical Characteristics -40˚C ≤ T ≤ +125˚C, Application Circuit Figure 16, unless otherwise specified. (Continued) A Symbol Parameter I Input Low Current Inputs D0, D1, IL ENB I Input Low Current Input RESET IL V Output High Voltage Outputs ...
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AC Electrical Characteristics The following specifications apply for V are not production tested. Minimum and Maximum limits are guaranteed by device characterization. Symbol Parameter T 1 Fault Delay Time Fault Delay Time DF T TRI-STATE Delay Time ...
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Typical Performance Characteristics Supply Current vs Temperature VFault Threshold vs Temperature Sx Sink Current vs S_HI Voltage Ifol Source Current vs Temperature 10126403 Sx Source Current vs S_HI Voltage 10126405 Sx Vol vs Sx Sink Current 10126407 5 10126404 10126406 ...
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Typical Performance Characteristics Sx Voh vs Sx Source Current VRS Interface Minimum Detect vs VR_BIAS www.national.com (Continued) VRS Interface Minimum Detect 10126409 10126411 6 vs Temperature 10126410 ...
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Timing Diagrams FIGURE 1. Electronic Timing Interface Timing Diagram FIGURE 2. Fault Pin Timing During Sx Shorted to Ground 10126413 7 10126412 www.national.com ...
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Timing Diagrams (Continued) FIGURE 3. Fault Pin Timing During Sx Shorted to Battery FIGURE 4. False FAULT Time for Disabled Sx Output www.national.com 10126414 10126415 8 ...
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Timing Diagrams (Continued) FIGURE 5. False FAULT Time for Enabled Sx Output FIGURE 6. Time for Valid Fault Detection 9 10126416 10126417 www.national.com ...
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Timing Diagrams (Continued) FIGURE 7. Electronic Timing Interface Typical Waveforms www.national.com FIGURE 8. VR Interface Test Circuit 10 10126418 10126419 ...
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Timing Diagrams (Continued) FIGURE 9. VR Interface Timing Diagram Circuit Description VR SENSOR INTERFACE The differential inputs, VR_HI and VR_LO are low imped- ance inputs with a DC voltage bias of one half of Vcc, Both inputs require equal value ...
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Circuit Description (Continued) linear. For VR_BIAS values greater than 500KΩ, the mini- mum detect level is typically determined more by the internal device offsets, and thermal effects. FIGURE 11. Voltage Comparator Block Diagram VOLTAGE COMPARATORS The circuit includes four general ...
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Circuit Description (Continued) Inputs RESET ENB FIGURE 14. Truth Table for Electronic Timing Interface The Electronic Timing Interface provide signals to the spark module from the micro-processor. The ...
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Circuit Description (Continued) FIGURE 15. FAULT Pin Output During Normal Operation Ground cannot be detected. The internal logic is unable to discern which output pin is above the Fault Threshold Volt- age, only that a pin is. Thus, the logical ...
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Circuit Description (Continued) FIGURE 16. Typical Application 15 10126426 www.national.com ...
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... NATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT AND GENERAL COUNSEL OF NATIONAL SEMICONDUCTOR CORPORATION. As used herein: 1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant ...