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PDF MC33389 Data sheet ( Hoja de datos )
| Número de pieza | MC33389 | |
| Descripción | System Basis Chip with Low Speed Fault Tolerant CAN | |
| Fabricantes | Motorola Semiconductors | |
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MOTOROLA Order Number: MC33389/D
Semiconductor TechnicFarleDeastacale Semiconductor, Inc.
Rev 3.5, March 17th, 03
Advance Information
System Basis Chip with Low
Speed Fault Tolerant CAN
MC33389
AUTOMOTIVE SBC
SYSTEM BASIS CHIP
The MC33389 is a monolithic integrated circuit combining many functions
frequently used by automotive ECUs. It incorporates a low speed fault tolerant
CAN transceiver.
SILICON MONOLITHIC
INTEGRATED CIRCUIT
• Dual Low Drop Voltage Regulators, with Respectively 100mA and 200mA
PIN CONNECTIONS
Current Capabilities, Current Limitation and Over Temperature Detection with
Prewarning
• 5V Output Voltage for V1 Regulator
• Three Operational Modes (Normal, Standby and Sleep Mode) Separated
from the CAN Interface Operating Modes
DH SUFFIX
POWER PACKAGE
CASE 979C
HSOP-20
• Low Speed 125kBaud Fault Tolerant CAN Interface, Compatible with
MC33388 Standalone Physical Interface
• V1 Regulator Monitoring and Reset Function
• Three External High Voltage Wake-up Inputs, Associated with V3 Vbat Switch
• 100mA Output Current Capability for V3 Vbat Switch Allowing Drive of
External Switches or Relays
• Low Standby and Sleep Current Consumption
• Vbat Monitoring and Vbat Failure Detection Capabilities
• DC Operating Voltage up to 27V
• 40V Maximum Transient Voltage
• Programmable Software Window Watchog and Reset
TX 1
V1 2
RX 3
RSTB 4
INTB 5
MISO 6
MOSI 7
SCK 8
CSB 9
L2 10
• Wake up Capabilities (CAN Interface, Local Programmable Cyclic Wake up)
• Interface with MCU through SPI
www.DataSheet4U.com• Programmable Interupt Function
20 V3
19 VBAT
18 RTL
17 V2
16 CANH
15 GND
14 CANL
13 RTH
12 L0
11 L1
DW SUFFIX
PLASTIC PACKAGE
CASE 751F
SO-28
Simplified Block Diagram
(+12V)
VBAT
Dual Voltage Regulator
Voltage control 5V
Bat fail detect
VCC monitor 5V
VBAT switch supply
Mode control
V2
max 200mA
max 110mA
V1
TX
V1
RX
RSTB
INTB
GND
GND
GND
GND
MISO
MOSI
SCK
CSB
L2
1
2
3
4
5
6
7
8
9
10
11
12
13
14
28 V3
27 VBAT
26 RTL
25 V2
24 CANH
23 GND
2 2 GND
2 1 GND
20 GND
19 CANL
18 RTH
17 NC
16 L0
15 L1
I3 max. 100mA
V3
(Switch supply)
Interrupt control
Reset control
Watchdog & oscillator
INT
Reset
ORDERING INFORMATION
Device and version
Operating
Temperature Range
Package
MC33389ADW (1) TA = -40 to 125°C SO-28
SPI Interface
MOSI
SCK
MISO
CSB
MC33389ADH (1) TA = -40 to 125°C HSOP20
MC33389CDW (2) TA = -40 to 125°C SO-28
MC33389CDH (2) TA = -40 to 125°C HSOP20
MC33389DDW (3) TA = -40 to 125°C SO-28
L0
Wake-up L1
inputs L2
CAN H
R1 Rth
R2 Rtl
CAN L
Programmable
wake-up inputs
Fault tolerant
CAN
transceiver
Gnd
TX
RX
(1) Version A: If device remains in reset greater than 100ms due
to V1 undervoltage, device switches to sleep mode to minimise
current consumption. Wake-up configuration active.
(2) Version C: In V1 undervoltage condition, device remains in
permanent reset state until V1 returns to nominal conditions. V1
protected by overcurrent and over temperature functions.
(3) Version D: In V1 undervoltage condition, device remains in
permanent reset state until V1 returns to nominal conditions. V1
protected by overcurrent and over temperature functions.
Change of undervoltage reset threshold. Refer to electrical pa-
rameter table, V1 PIn 5V.
For More Information On This Product,
4DataSheet
This document
rigUht .tocochmange
contains information on a new product under
or discontinue this product without notice.
deGveoloptmoen:t.wMowtorwola.rferseerevess ctheale.com
© Motorola, Inc., 2002. All rights reserved.
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Parameter
MC33389
Freescale Semiconductor, Inc.
Symbol Min Typ Max Unit
Test Conditions
High Level Voltage Drop
V3drop
0.4 1
V IV3=-50mA, 9V<Vbat<40V
High Level Voltage Drop
V3drop
1.5 V IV3=50mA, 6V<Vbat<9V
V3 Output Current Limitation
I3lim
100
15
250 mA
5.5V<Vbat<27V
V3 Leakage Current
I3leak
15 µA
V3=0 (V3 off)
V3 Overtemp Detection
TV3 155
185 °C
Junction Temperature
V3 voltage with -30mA (negative
current for Relay Switch off)
VV3
0.3
0.5 V
For t≤100ms, no
Functional Error Allowed
CAN TRANSCEIVER
V2 for Forced BusStandby Mode
(Fail Safe)
Vrc2
3
3.9 4.7
V
CANH, CANL Pins
Differential Receiver, Threshold Voltage
-3.2
-2.5 V
Differential Receiver, Dominant to
Recessive Threshold
-3.2
-2.5 V
(Bus failures 1, 2, 5)
CANH Recessive Output Voltage
Vcanh
0.2 V
TX=high, R(RTH)<4k
CANL Recessive Output Voltage
Vcanl
V2-0.2
V TX=high, R(RTL)<4k
www.DataSheet4U.comCANH Output Voltage, Dominant
Vcanh
V2-1.4
V
TX=0V ; BusNormal Mode,
Icanh= -40mA
CANL Output Voltage, Dominant
Vcanl
1.4
V
TX=0V ; BusNormal Mode,
Icanl=40mA
CANH Output Current Limit
Icanh
50
75 100 mA
(Vcanh=0, TX=0)
CANL Output Current Limit
Icanl 50
95 130 mA
(Vcanl=14V, TX=0)
Detection Threshold
for Short-circuit to Battery Voltage
VcanhVcanl
7.3
7.9
8.9
V
BusNormal Mode
Detection Threshold
for Short-circuit to Battery Voltage
Vcanh Vbat/2+3
Vbat/2+5
V
BusStandby Mode
CANH Output Current, Failure3
CANL Output Current, Failure4
CANL Wake up Voltage Threshold VwakeL
CANH Wake up Voltage Threshold VwakeH
Wake up Threshold Difference
VwakeL-VwakeH
CANH Single Ended
Receiver Threshold
Vcanh
2.5
1.2
0.2
1.5
5 10
02
3.3 3.9
2 2.7
1.85 2.15
µA BusStandby Mode Vcanh=12V
µA
BusStandby Mode,
Vcanl=0V, Vbat=12V
V BusStandby Mode
V BusStandby Mode
V
V Failures 4,6,7
CANL Single Ended
Receiver Threshold
Vcanl 2.8 3.05 3.4
V
Failures 3,8
CANL Pull up Current
Icanlpu
45
75
90
µA
BusNormal Mode
MC33389
DataSheet4 U .com
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MC33389
FreescalDeEVSICEeDmESiCcRoIPnTIOdNuctor, Inc.
Introduction
The System Basis Chip is an integrated circuit dedicated
against short to ground (current limitation) and overtemperature.
V2 is active in Normal mode.
to car body applications. It includes three main blocks :
- A dual voltage regulator
Undervoltage Detection
V2 is monitored for undervoltage and a flag is set in the
- Reset, watchdog, wake up inputs, cyclic wake up
- CAN low speed fault tolerant physical interface
VSSR register.
Overtemperature Protection
V2 internal ballast transistor is monitored for
Supplies
Two low drop regulators and one switch to Vbat are
provided to supply the ECU microcontroller or peripherals,
with independent control and monitoring through SPI.
Voltage Regulator V1
V1 is a 5V, 3% low drop voltage regulator dedicated to the
microcontroller supply. It can deliver up to 100mA and is
overtemperature. Two detection thresholds are provided. A
pre-warning threshold at 140°C and a shut-off threshold at
165°C. Once the first threshold is reached, a flag is set in the
OTSR register which is readable. A maskable interrupt can be
sent to microcontroller.
Once the second threshold is reached, a flag is set in the
OTSR register, V2 is switched off. It can only be switched on
again via the SPI.
totally protected against short to ground (current limitation)
and overtemperature. V1 is active in Normal request, Normal
Table 5. V2 Control
and standby modes.
No forward parasitic diode exists from V1 to Vbat. This
means that, if Vbat voltage drops below V1, no high current
flowing from V1 to Vbat will discharge the capacitor connected
to V1. Its stored energy will only be used to supply the
microcontroller and gives time to save all relevant data.
Conditions For V2 On
Normal mode (via SPI) AND
V2 below shut off
temperature threshold
Conditions For V2 Off
Sleep mode, or standby
mode or NormalRequest or
emergency mode (via SPI)
Shut-off temp.
threshold reached
Undervoltage Reset
V1 is monitored for undervoltage (power up, power down)
and a reset is provided at RSTB output for 1ms. This ensures
proper initialization of the microcontroller at power-on or after
supply is lost. On top of that, a flag is set in RSR register
readable via the SPI.
V1 disabled
(for any reason)
Switch V3
V3 is a 10Ω switch to Vbat, it can be used to supply
external contacts or relays. A great flexibility is given for the
different possible ways for its control. It is protected against
short to ground (current limitation).
Overtemperature Protection
www.DataSheet4U.comV1 internal ballast transistor is monitored for
Overtemperature Protection
V3 output transistor is monitored for overtemperature.
overtemperature. Two detection thresholds are provided. A Once the threshold is reached, a flag is set in the VSSR
pre-warning threshold at 145°C and a shut-off threshold at register, V3 is switched off. It will be automatically switched on
175°C. Once the first threshold is reached, a flag is set in the once the junction temperature is back to the pre-warning
OTSR register. A maskable interrupt can be sent to the threshold.
microcontroller. Once the second threshold is reached, a flag
is set in the OTSR register, a maskable interrupt is sent to the
Table 6. V3 Control
microcontroller and V1 is switched off.
Once the junction temperature is back to the pre-warning
threshold, V1 regulator it will be automatically switched on.
Conditions For V3 On
Permanently in Normal
mode if configured via SPI
Conditions For V3 Off
Permanently in Normal
mode if configured
Table 4. V1 Control
Permanently in Standby
mode if configured via SPI
NormalRequest mode
Conditions For V1 On
NormalRequest mode
(at V1 power on)
Normal mode (via SPI)
Standby mode
(via SPI)
V1 below pre-warning
temperature threshold
During Reset
Conditions For V1 Off
Sleep mode (via SPI)
Shut-off temperature
threshold reached
No Vbat power supply
(cold start)
Emergency mode
Note: current capability of V1, V2 and V3 depends upon
the thermal management. Over temperature shutdown might
In sleep mode, during
enable time of cyclic
sense if configured
Permanently in Standby
mode if configured
Permanently in sleep
mode if configured
In sleep mode, during
disable time of cyclic
sense if configured
Overtemp threshold reached
V1 disabled (for any reason)
V2 over temperature shutdown
be reached and lead to turn off of V1, V2 and V3 for output
current below their max current capability.
Voltage Regulator V2
V2 is a 5V low drop voltage regulator dedicated to
peripherals supply. It can deliver up to 200mA and is protected
Supply and Vbat Block
Vbat Monitoring
Vbat is the main power supply coming from the Battery
voltage after an external protection diode (for reverse battery).
DataSheet4MUC.3c3o3m89
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| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet MC33389.PDF ] | |
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