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MM912_P812 Datasheet(PDF) 7 Page - Freescale Semiconductor, Inc |
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MM912_P812 Datasheet(HTML) 7 Page - Freescale Semiconductor, Inc |
7 / 19 page Analog Integrated Circuit Device Data Freescale Semiconductor 7 MM912_P812 PIN CONNECTIONS Table 4. MM912_P812 Pin Definitions Analog or MCU Pin Pin Name Pin Function Formal Name Description and Recommendations - 1 N.C. Unused ------- Unused pin, leave open - 2 N.C. Unused ------- Unused pin, leave open Analog 3 MTX Input ISO9141 Data Input to MCU Input logic level ISO9141 data, from the MCU, to the ISO9141 IN/OUT pin Connect to MCU SCI TXD output (pin 90) if using ISO9141 circuit Analog 4 MRX Output ISO9141 Data Output to MCU Output logic level ISO9141 data to the MCU from the ISO9141 IN/OUT pin Connect to MCU SCI RXD input (pin 89) if using ISO9141 circuit Analog 5 WDRFSH Input Watchdog Refresh Logic Level input from MCU to refresh the watchdog circuit to prevent RESET Connect to MCU I/O output (e.g. PT4 pin 48) Analog 6 TM_EN Input Test Mode Enable Used by Freescale test engineering, Connect to Ground - 7 N.C. Unused ------- Unused pin, leave open - 8 N.C. Unused ------- Unused pin, leave open Analog 9 ROUT Output Relay Driver Output Low side relay driver output driven by parallel input RIN Use ESD capacitor where the signal goes off the PC Board Analog 10 PGND2 Ground Power Ground 2 Ground for the RELAY driver output Connect to Ground - 11 N.C. Unused ------- Unused pin, leave open Analog 12 LAMPOUT Output Warning Lamp Output Low side driver output for MIL (warning lamp) driven by parallel input LAMPIN. Use an ESD capacitor where the signal goes off the PC Board - 13 N.C. Unused ------- Unused pin, leave open Analog 14 DGND Ground Supply Ground Used as ground for all low power signals. Connect to Ground - 15 N.C. Unused ------- Unused pin, leave open Analog 16 PGND1 Ground Power Ground 1 Ground for INJOUT injector driver output. Connect to Ground Analog 17 INJOUT Output Injector Driver Output Low side driver output for the Injector driven by parallel input INJIN. Use an ESD capacitor where the signal goes off the PC Board. - 18 N.C. Unused ------- Unused pin, leave open - 19 N.C. Unused ------- Unused pin, leave open - 20 N.C. Unused ------- Unused pin, leave open Analog 21 WD_INH Input Watchdog Inhibit Normally tied to GND, If tied high through a pull-up, it inhibits RESET from occurring when a watchdog timeout occurs. Normally connect to Ground. Analog 22 TEST1 Input Test 1 MUST be tied to GND. Connect to Ground Analog 23 TEST2 Input Test 2 MUST be tied to GND. Connect to Ground Analog 24 TEST3 Input Test 3 MUST leave OPEN. leave open - 25 N.C. Unused ------- Unused pin, leave open Analog 26 IGNOUTL Output Ignition Output Low Low side output to drive the Gate/Base of the IGBT/Bipolar Darlington The network used on this pin is determined by the user requirements. Analog 27 IGNOUTH Output Ignition Output High High side output to drive the Gate/Base of IGBT/Bipolar Darlington The network used on this pin is determined by the user requirements. |
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