Freescale Semiconductor
Technical Data
Document Number: MC33989
Rev. 13.0, 3/2007
System Basis Chip with
High-Speed CAN Transceiver
The 33989 is a monolithic integrated circuit combining many
functions used by microcontrollers (MCU) found in automotive
Engine Control Units (ECUs). The device incorporates
functions such as: two voltage regulators, four high voltage
(wake up) inputs, a 1Mbaud capable CAN physical interface,
an SPI interface to the MCU and VSUP monitoring and fault
detection circuitry. The 33989 also provides reset control in
conjunction with VSUP monitoring and the watchdog timer
features. Also, an Interrupt can be generated, for the MCU,
based on CAN bus activity as well as mode changes.
Features
• V
DD1
: Low Drop Voltage Regulator, Current Limitation,
Overtemperature Detection, Monitoring, and Reset Function
• V
DD1
: Total Current Capability 200 mA
• V2: Tracking Function of V
DD1
Regulator. Control Circuitry for
External Bipolar Ballast Transistor for High Flexibility in Choice of
Peripheral Voltage and Current Supply
• Low Stand-By Current Consumption in Stop and Sleep Modes
• High-Speed 1 MBaud CAN Physical Interface
• Four External High Voltage Wake-up Inputs Associated with HS1
V
BAT
Switch
• 150 mA Output Current Capability for HS1 V
BAT
Switch Allowing
Drive of External Switches Pull-Up Resistors or Relays
• V
SUP
Failure Detection
• 40 V Maximum Transient Voltage
• Pb Free designated by suffix code EG
33989
SYSTEM BASIS CHIP
WITH HIGH-SPEED CAN
DW SUFFIX
EG SUFFIX (PB-FREE)
98ASB42345B
28-PIN SOICW
ORDERING INFORMATION
Device
MC33989DW/R2
- 40°C to 125°C
MCZ33989EG/R2
28 SOICW
Temperature
Range (T
A
)
Package
33989
5.0 V
MCU
VDD1
GND
RST
INT
CS
SCLK
MOSI
MISO
CS
SCLK
MOSI
MISO
V2CTRL
V2
HS1
L0
L1
L2
L3
WD
CANH
CANL
VSUP
VPWR
V2
Local Module Supply
Wake-Up Inputs
Safe Circuits
Twisted
Pair
CAN Bus
SPI
TX
RX
Figure 1. MC33989 Simplified Application Diagram
Freescale Semiconductor, Inc. reserves the right to change the detail specifications,
as may be required, to permit improvements in the design of its products.
© Freescale Semiconductor, Inc., 2007. All rights reserved.
FREESCALE [ FREESCALE SEMICONDUCTOR, INC ]
