Freescale Semiconductor
Advance Information
Document Number: MC33800
Rev. 5.0, 10/2007
Engine Control Integrated
Circuit
The 33800 is a combination output switch and driver Integrated
Circuit (IC) which can be used in numerous powertrain applications.
The IC contains two programmable constant current drivers (CCD),
an octal, low side, serial switch (OSS), and six, external MOSFET
gate pre-drivers (GD). The IC has over-voltage, under-voltage, and
thermal protection. All drivers and switches, including the external
MOSFETs, have over-current protection, off-state open load
detection, on-state shorted load detection, and fault annunciation via
the serial peripheral interface (SPI).
Additional features include: Low power Sleep Mode, Heated
Exhaust Gas Oxygen (HEGO) sensor diagnostics, output control via
serial and/or parallel inputs, PWM capability, and programmable
current output with dithering. These features, along with cost effective
packaging, make the 33800 ideal for Powertrain Engine Control
applications.
Features
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Wide operating voltage range, 5 < VPWR < 36V
Interfaces to 3.3V and 5V microprocessors via SPI protocol
Low, Sleep Mode, standby current, typically 10uA.
Internal or external voltage reference
Internal oscillator with calibrate capability
Measures resistance to monitor HEGO sensors
CCDs have programmable current, dither frequency and amplitude
OSSs can be paralleled to increase current capability
GDs have programmable frequency and duty cycle PWM
All outputs controllable via serial and/or parallel inputs
Pb-free packaging designated by suffix code EK
V
BAT
33800
ENGINE CONTROL
EK SUFFIX (Pb-FREE)
98ASA99334D
54-PIN SOICW-EP
ORDERING INFORMATION
Device
MCZ33800EK/R2
Temperature
Range (T
A
)
-40°C to 125°C
Package
54 SOICW EP
33800
V
DD
VPWR
2.5V
VDD
VCAL
RI_REF
REXT
SI
SCLK
CS
SO
DEFAULT
EN
AN0
V
PWR
MCU
CCD1_REC
CCD1_OUT
V
PWR
CCD2_REC
CCD2_OUT
V
BAT
V
BAT
OUT1
OUT8
MOSI
SCLK
CS
MISO
{
{
VDSNS1
GD1
LRFDBK
P1,P3,P5,P7
PWM1
PWM6
GND
VSSNS123
VDSNS6
GD6
VSSNS456
Figure 1. MC33800 Simplified Application Diagram
* This document contains certain information on a new product.
Specifications and information herein are subject to change without notice.
© Freescale Semiconductor, Inc., 2007. All rights reserved.
FREESCALE [ FREESCALE SEMICONDUCTOR, INC ]
