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33812 Datasheet(PDF) 4 Page - Freescale Semiconductor, Inc |
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33812 Datasheet(HTML) 4 Page - Freescale Semiconductor, Inc |
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4 / 25 page  Analog Integrated Circuit Device Data 4 Freescale Semiconductor 33812 PIN CONNECTIONS PIN CONNECTIONS Figure 4. 33812 Pin Connections GND IGNOUTL IGNOUTH IGNSUP IGNFB ISO9141 VCCSENS VCCREF VPWR RESET INJFLT RELFLT IGNFLT INJIN RIN LAMPIN IGNIN TEST3 TEST2 TEST1 WD_INH N.C. INJOUT PGND1 DGND LAMPOUT PGND2 ROUT N.C. TM_EN WDRFSH MRX MTX 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 Table 1. 33812 Pin Definitions Pin Pin Name Pin Function Formal Name Description 1 IGNOUTL Output Ignition Output Low Low side output to drive Gate/Base of IGBT/Bipolar Darlington 2 IGNOUTH Output Ignition Output High High side output to drive Gate/Base of IGBT/Bipolar Darlington 3 IGNSUP Input Ignition Output Supply Tie to +5 V for Darlington, tie to the VPWR supply for IGBT output device 4 IGNFB Input Feedback from Source Voltage feedback from source of Ignition driver transistor through 10:1 voltage divider 5 ISO9141 Input/Output ISO9141 K-Line Bidirectional Serial Data Signal The ISO9141 pin is VPWR level IN/OUT signal connected to external ECU Tester using ISO9141 Protocol.The Output is Open drain and the Input is a ratiometric VPWR level threshold comparator 6 VCCSENS Input Voltage Sense from VCC Feedback to internal VCC regulator from external pass transistor 7 VCCREF Output VCC Reference Base drive Base drive voltage for external PNP pass transistor 8 VPWR Supply Input Main Voltage Supply Input VPWR is the main voltage supply Input for the device. Connected to +12 volt battery (It should have reverse battery protection and transient suppression.) 9 RESET Output Reset Output to MCU Logic Level Reset signal used to reset the MCU when the watchdog circuit times out, during under voltage condition on VCC and for initial power up and power down 10 INJFLT Output Injector Fault Logic Level output to MCU indicating any fault in the injector circuit. 11 RELFLT Output Relay Fault Logic Level output to MCU indicating any fault in the relay circuit. 12 IGNFLT Output Ignition Fault Logic Level output to MCU indicating any fault in the ignition circuit. 13 INJIN Input Injector Parallel Input Logic Level input from the MCU to control the injector driver output 14 RIN Input Relay Parallel Input Logic Level Parallel input to activate RELAY output, ROUT 15 LAMPIN Input LAMP Parallel Input Logic Level Parallel input to activate the malfunction indicator lamp output, LAMP 16 IGNIN Input Ignition Parallel Input Logic Level Input from MCU controlling the ignition coil current flow and spark. 17 MTX Input ISO9141 MCU Data Input Input logic level ISO9141 data from the MCU to the ISO9141 IN/OUT pin |
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