33812 datasheet(5/25 Pages) FREESCALE

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Analog Integrated Circuit Device Data

Freescale Semiconductor

33812

PIN CONNECTIONS

MRX

Output

Low Side Driver Output

Output logic level ISO9141 data to the MCU from the ISO9141 IN/OUT pin

WDRFSH

Input

Watchdog Refresh

Logic Level input from MCU to refresh the watchdog circuit to prevent

RESET

TM_EN

Input

Test Mode Enable

Used by Freescale test engineering, tie to Gnd in operation

N.C.

Unused

-------

Unused pin, leave open

ROUT

Output

Relay Driver Output

Low side relay driver output driven by parallel input RIN

PGND2

Ground

Power Ground 2

Ground for RELAY driver output

LAMPOUT

Output

Warning Lamp Output

Low side driver output for MIL (warning lamp) driven by parallel input

LAMPIN

DGND

Ground

Supply Ground

Tied to ground plane, used for ground for all low power signals

PGND1

Ground

Power Ground 1

Ground for INJOUT injector driver output

INJOUT

Output

Injector Driver Output

Low side driver output for Injector driven by parallel input INJIN

N.C.

Unused

-------

Unused pin, leave open

WD_INH

Input

Watch Dog Inhibit

Normally tied to GND, If tied high through a pull-up, it inhibits RESET from

a watchdog time-out

TEST1

Input

Test 1

MUST be tied to GND.

TEST2

Input

Test 2

MUST be tied to GND.

TEST3

Input

Test 3

MUST leave OPEN.

GND

Ground

Substrate Ground

Should be tied to DGND.

Table 1. 33812 Pin Definitions

Pin Name

Function

Formal Name

Description

33812 Datasheet(PDF) 5 Page - Freescale Semiconductor, Inc

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