mc33812 Freescale Semiconductor, Inc, mc33812 Datasheet - Page 5

• Manufacturer Part Number: mc33812
• Description: Multifunctional Ignition And Injector Driver
• Manufacturer: Freescale Semiconductor, Inc

Table 1. 33812 Pin Definitions
Analog Integrated Circuit Device Data
Freescale Semiconductor
Pin
EP
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
LAMPOUT
Pin Name
WDRFSH
WD_INH
INJOUT
PGND2
PGND1
TM_EN
TEST1
TEST2
TEST3
ROUT
DGND
MRX
GND
N.C.
N.C.
Function
Unused
Unused
Ground
Ground
Ground
Ground
Output
Output
Output
Output
Input
Input
Input
Input
Input
Input
Pin
Low Side Driver Output
Warning Lamp Output
Injector Driver Output
Relay Driver Output
Watchdog Refresh
Test Mode Enable
Watch Dog Inhibit
Substrate Ground
Power Ground 2
Power Ground 1
Supply Ground
Formal Name
Test 1
Test 2
Test 3
-------
-------
Output logic level ISO9141 data to the MCU from the ISO9141 IN/OUT pin
Logic Level input from MCU to refresh the watchdog circuit to prevent
RESET
Used by Freescale test engineering, tie to Gnd in operation
Unused pin, leave open
Low side relay driver output driven by parallel input RIN
Ground for RELAY driver output
Low side driver output for MIL (warning lamp) driven by parallel input
LAMPIN
Tied to ground plane, used for ground for all low power signals
Ground for INJOUT injector driver output
Low side driver output for Injector driven by parallel input INJIN
Unused pin, leave open
Normally tied to GND, If tied high through a pull-up, it inhibits RESET from
a watchdog time-out
MUST be tied to GND.
MUST be tied to GND.
MUST leave OPEN.
Should be tied to DGND.
Description
PIN CONNECTIONS
33812
5