33812 Datasheet, PDF (2/25 Pages) Freescale Semiconductor, Inc – SMALL ENGINE CONTROL IC

V_BAT
+5 V
MCU
VCC
GPIO
GPIO
RESET
GPIO
GPIO
GPIO
GPIO
GPIO
GPIO
RXD
TXD
PNP
VPWR
33812
LAMPOUT
MIL ^VBAT
V_BAT
+5 V
VCCREF
VCCSENS
LAMPIN
RIN
RESET
WDRFSH
ROUT
INJECTOR
INJOUT
V_BAT
IGNSUP
IGNFB
+5 V
RELAY OR
OTHER LOAD
V_BAT
INJIN
INJFLT
IGNIN
IGNFLT
RELFLT
MRX
MTX
IGNOUTH
IGNOUTL
(DARLINGTON
DRIVER SHOWN)
TM_EN, TEST2
WD_INH
PGND1,2
DGND
ISO9141
ISO9141
Figure 2. 33812 Simplified Application Diagram (Darlington Mode)
33812
2
Analog Integrated Circuit Device Data
Freescale Semiconductor