MC33989FS, System Basis Chip with High-Speed CAN Transceiver

Analog Mixed Signal and Power Management
MC33989
System Basis Chip with High Speed CAN Transceiver
Applications
MC33989 Simplified Application Diagram
• Aircraft Systems
• Automotive Systems
• Robotic Systems
• Farm Equipment
• Industrial Actuator Control
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 (wakeup) inputs, a 1.0 Mbaud 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.
V2
VSUP
5.0 V
VDD
GND
• Marine Applications
Overview
VPWR
33989
RST
MCU
CS
SCLK
MOSI
MISO
INT
SPI
CS
SCLK
MOSI
MISO
V2CTRL
V2
HS1
L0
L1
L2
L3
WD
TX
RX
Performance
Operating Voltage
Data Rate
Internal 5.0 V Regulator
External 5.0 V Series Regulator
Sleep & Stop Current
Operating Temperature
Local Module Supply
Wake-up Inputs
Safe Circuits
CANH
Twisted
CANL
Pair
Typical Values
5.5 - 27 V
1.0 MB/s
200 mA
User Defined
60/120 μA
-40 °C ≤ TA ≤ 125 °C
CAN Bus
Features
• VDD1: Low Drop voltage regulator, current limitation, over-temperature detection, monitoring, and reset function
• VDD1: Total current capability 200 mA
• V2: Tracking Function of VDD1 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 1.0 MBaud CAN physical interface
• Four external high voltage wake-up inputs associated with HS1 VBAT switch
• 150 mA output current capability for HS1 VBAT switch allowing drive of external switches pull-up resistors or relays
• VSUP failure detection
• 40 V maximum transient voltage
• Additional devices available for comparison in Analog Product Selector Guide, SG1002 and Automotive Product Selector
Guide, SG187
CUSTOMER BENEFITS
• Provides complete MCU power management solution with few components
• CAN and SPI interface
• Internal wake-up and watchdog function
• Freescale offers a complete line of compatible system basis chips with transceivers
• Simple system design with direct interfacing to a microprocessor
• Reduced PC board space resulting in enhanced application reliability
• Economical solution with an optimized performance/cost ratio
• Simplified MCU power supply design with internal safety features and output voltage supervisory circuits
33989 INTERNAL BLOCK DIAGRAM
V2CTRL
VSUP Monitor Dual
Voltage Regulator
VDD1 Monitor
VSUP
V2
VDD1
Oscillator
HS1 Control
INT
HS1
Interrupt
Watchdog
Reset
L0
L1
Programmable
Wake-up Inputs
RST
Mode Control
L2
CS
L3
SPI
Intrace
TX
RX
CANH
SCLK
MOSI
High Speed
1.0 MB/s CAN
Physical
Interface
MISO
V2
GND
CANL
PROTECTION
WD
DETECT
LIMITING
SHUT
DOWN
STATUS
REPORTING
V1:
Under-voltage
z
Over-temperature
z
Over-current
z
z
Short-circuit
z
z
z
z
z
V2:
Under-voltage
z
z
HS1:
Over-temperature
z
Over-current
z
z
z
CAN Bus Failure:
H&L Over-current
z
H&L Over-temperature
z
z
z
z
z
Supply Line:
Under-voltage
z
z
Disconnect
z
z
Analog Mixed signal and Power Management
Questions
• What voltage (5.0 or 3.3 V) does your microcontroller need?
• What type of CAN (high/low speed) do you need?
• Do you need several power supplies?
• Do you need a fully protected low drop series pass regulator?
• How many wake-up inputs do you need?
• Do you need a watchdog with independent reset/interrupt capability?
• Are you looking for a complete, easy-to-design power supply solution for your embedded system?
• Do you need an advanced microcontroller power supply with power sequencing and supervisory functions??
28 SOICW
Ordering Information
Device
MC33989PEG/R2
Temperature Range
Package
-40 to 125°C
28 SOICW
Evaluation Board
KIT33989XXXXX
Evaluation Board
1.27 mm Pitch
7.5 x 18 mm Body
Documentation
MC33989
Data sheet order number
SG1002
Analog Product Selector Guide
SG 187
Automotive Product Selector Guide
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© Freescale Semiconductor, Inc., 2011. All rights reserved.
Document Number: MC33989FS REV 6.0