Document Number: MC33811 Freescale Semiconductor Rev. 3, 8/2008 Advance Information Solenoid Monitor Integrated Circuit (IC) 33811 The 33811 is a 5 channel Solenoid Monitor IC that is used to verify proper electrical and mechanical solenoid operation. The IC contains five solenoid driver voltage monitoring stages and a serial peripheral SOLENOID MONITOR interface (SPI) for fault communication and setup. The IC has the ability to determine the correct movement of solenoid armatures by analyzing the variation in the voltage profile, across the solenoid driver MOSFET, which represents the actual solenoid current profile. These features, along with cost effective packaging, make the 33811 ideal for powertrain solenoid monitoring applications. Features EG SUFFIX (PB FREE) Typical operating voltage range, 10.5 < VPWR < 15.5 volts 98ASB42567B Interfaces to 3.3 and 5 volt microprocessors via SPI protocol 16-PIN SOICW Reset pin to initialize all 5 fault outputs Internal voltage regulator Internal oscillator ORDERING INFORMATION Unique solenoid current profile detection circuitry Temperature Device Package Pb-free packaging designated by suffix code EG Range (T ) A MCZ33811EG/R2 -40C to 125C 16 SOICW 33811 V BAT VPWR VDD VDD SOLM1 VSPI SOLM2 SOLM3 MCU SOLM4 SI MOSI SOLM5 SCLK SCLK CS CS MISO SO D GND A GND RESET P00 SOLENOIDS V BAT SOLENOID DRIVER P01 IN1 OUT1 PORTS V BAT P02 IN2 OUT2 V BAT IN3 P03 OUT3 V BAT IN4 P04 OUT4 V BAT P05 IN5 OUT5 Figure 1. 33811 Simplified Application Diagram * This document contains certain information on a new product. Specifications and information herein are subject to change without notice. Freescale Semiconductor, Inc., 2007. All rights reserved.INTERNAL BLOCK DIAGRAM INTERNAL BLOCK DIAGRAM VPWR, VDD, 5.0 V VPWR Oscillator VDD and Clock Generator D GND VSPI Waveform Detection SOLM1 Circuitry RESET Waveform Detection SOLM2 Circuitry SPI Interface Waveform Detection SI SOLM3 V DD Circuitry 15A 15A CS SCLK SO Waveform Detection SOLM4 Circuitry A GND Waveform Detection SOLM5 Circuitry Figure 2. 33811 Simplified Internal Block Diagram 33811 Analog Integrated Circuit Device Data 2 Freescale Semiconductor