Freescale Semiconductor, Inc.
MOTOROLA
SEMICONDUCTOR TECHNICAL DATA
Document order number: MC33742
Rev 2.0, 10/2004
Advance Information
System Basis Chip (SBC) with
Enhanced High-Speed CAN
Transceiver
The 33742 and the 33742S are monolithic integrated circuits combining
many functions frequently used by automotive environmental control units
(ECUs).
The 33742 is an SBC having a fully protected fixed 5.0 V low-drop regulator
with current limit, overtemperature pre-warning, and reset. An output drive with
sense input is also provided to implement a second 5.0 V regulator, using an
external PNP bipolar junction transistor. The 33742 has normal, standby, stop,
and sleep modes, an internally switched high-side power supply output with
four wake-up inputs, programmable window watchdog, interrupt, reset, SPI
input control, and a high-speed CAN transceiver compatible with CAN 2.0 A
and B protocols for module-to-module communication.
Features
• High-Speed 1.0 Mbps CAN Interface with Bus Diagnostic Capability
(Detection of CANH and CANL Short to Ground, to V
DD
, and to V
SUP
)
• Low-Drop Voltage 5.0 V, 200 mA V
DD
Regulator with Current-Limiting,
Overtemperature Pre-Warning, and Output Monitoring with Reset
• Additional 5.0 V Regulator with External Series Pass Transistor
• Normal, Standby, Stop, and Sleep Modes with Low Sleep and Stop
Mode Current
• 150 mA High-Side Switch Output for Control of External Circuitry
• Four External Wake-Up Inputs
• Software-Programmable Watchdog Window, Interrupt, and Reset
33742
33742S
SYSTEM BASIS CHIP
WITH ENHANCED
HIGH-SPEED CAN
Freescale Semiconductor, Inc...
DW SUFFIX
CASE 751F-05
28-TERMINAL SOICW
ORDERING INFORMATION
Device
MC33742DW/R2
MC33742SDW/R2
Temperature
Range (T
A
)
-40°C to 125°C
Package
28 SOICW
33742 Simplified Application Diagram
V
PWR
33742
33742
5.0 V
MCU
RST
V
DD
V
SUP
V
2
V2CTRL
V2
V
PWR
CS
SCLK
MOSI
MISO
SPI
CS
SCLK
MOSI
MISO
INT
L0
L1
L2
L3
WDOG
HS
CANH
CANL
GND
Safe Circuitry
ECU Local
Supply
Twisted
Pair
CAN Bus
TXD
RXD
GND
This document contains certain information on a new product.
Specifications and information herein are subject to change without notice.
© Motorola, Inc. 2004
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Freescale Semiconductor, Inc.
Table 1. Significance Device Differences
Motorola Part No.
33742
Reset Duration
15 ms (typical)
Device Differences
The duration of the reset mode, in which the
RST
terminal is asserted low, is 15 ms
typical. Reset mode is entered after device power up, when a V
DD
undervoltage
condition occurred and if the watchdog register is not properly triggered.
The duration of the reset mode, in which the
RST
terminal is asserted low, is 3.5 ms
typical. Reset mode is entered after device power up, when a V
DD
undervoltage
condition occurred and if the watchdog register is not properly triggered.
See Page
15
33742S
3.5 ms (typical)
15
Freescale Semiconductor, Inc...
V2CTRL
V2
V
SUP
V
SUP
Monitor
CAN
Dual Voltage Regulator
5.0 V/200 mA Supply
V
DD
Monitor
HS Control
Mode Control
Oscillator
Interrupt
Watchdog
Reset
V
DD
HS
L0
L1
L2
L3
Programmable
Wake-Up Input
INT
WDOG
RST
SPI
V2
MOSI
SCLK
MISO
CS
CANH
CANL
High-Speed 1.0 Mbps
CAN
Physical Interface
TXD
RXD
GND
Figure 1. 33742 Simplified Internal Block Diagram
33742
2
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MOTOROLA ANALOG INTEGRATED CIRCUIT DEVICE DATA
Freescale Semiconductor, Inc.
RXD
TXD
V
DD
RST
INT
1
2
3
4
5
6
7
8
9
10
11
12
13
14
28
27
26
25
24
23
22
21
20
19
18
17
16
15
WDOG
CS
GND
GND
GND
GND
V2
V2CTRL
V
SUP
HS
L0
MOSI
MISO
SCLK
GND
GND
GND
GND
CANL
CANH
L3
L2
L1
Freescale Semiconductor, Inc...
TERMINAL DEFINITIONS
A functional description of each terminal can be found in the System/Application Information section beginning on
page 18.
Terminal
1
2
3
4
5
6–9
20–23
10
11
12
13
14–17
Terminal
Name
RXD
TXD
V
DD
RST
Formal Name
Receive Data
Transmit Data
Voltage Digital Drain
Reset Output
(Active LOW)
Interrupt Output
(Active LOW)
Ground
Voltage Source 2
Voltage Source 2 Control
Voltage Supply
High-Side Output
Level 0 –3 Inputs
CAN bus receive data output
CAN bus transmit data input
5.0 V regulator output terminal.
Definition
This is the device reset output whose main function is to reset the MCU. This terminal
has an internal pull-up current source to V
DD
This output is asserted LOW when an enabled interrupt condition occurs. The output
is a push-pull structure.
Ground of the IC. These terminals are connected to the package lead frame in order to
provide a thermal path.
Sense input for V2 regulator using external ballast. V2 is also the internal supply for the
CAN cell.
Output driver for the external ballast transistor.
Supply input for the complete device.
Output of internal high-side switch. Current capability is internally limited to 150 mA.
Input interfaces to external circuitry (switched or ICs). Levels at these terminals can be
read by SPI and input can be used as programmable wake-up input in Sleep or Stop
mode.
CAN high output.
CAN low output.
Clock input for the Serial Peripheral Interface (SPI) of the device.
SPI data sent to MCU. When
CS
is HIGH, terminal is high impedance.
SPI data received by the 33742.
Chip select terminal for SPI. When
CS
is LOW, device is selected.
Output of watchdog circuitry. Terminal is asserted LOW if software watchdog is not
correctly triggered.
INT
GND
V2
V2CTRL
V
SUP
HS
L0–L3
18
19
24
25
26
27
28
CANH
CANL
SCLK
MISO
MOSI
CS
CAN High
CAN Low
Serial Data Clock
Master In/Slave Out
Master Out/Slave In
Chip Select
(Active LOW)
Watchdog Output
(Active LOW)
WDOG
MOTOROLA ANALOG INTEGRATED CIRCUIT DEVICE DATA
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33742
3
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MAXIMUM RATINGS
All voltages are with respect to ground unless otherwise noted.
Rating
Symbol
Value
Unit
ELECTRICAL RATINGS
Power Supply Voltage at V
SUP
Terminal
Continuous (Steady-State)
Transient Voltage (Load Dump)
Logic Inputs (RXD, TXD, MOSI, MISO,
CS
, SCLK,
RST
,
WDOG
, and
INT
Terminals)
Output Current at V
DD
Terminal
HS Terminal
V
LOG
I
DD
V
HS
I
HS
V
ESD1
±4000
±2000
V
ESD2
V
DCIN
I
DCIN
V
TRINEC
P
D
V
CANH/L
I
CANH/L
V
LDH/L
V
TRH/L
±200
V
V
SUP
-0.3 to 27
-0.3 to 40
-0.3 to V
DD
+ 0.3
Internally Limited
V
A
V
Freescale Semiconductor, Inc...
Voltage
Output Current
ESD Voltage, Human Body Model
(Note 1)
HS, L0, L1, L2, L3, CANH, CANL Terminals
All Other Terminals
ESD Voltage, Machine Model
(Note 2)
L0, L1, L2, L3 Terminals
DC Input Voltage
DC Input Current
Transient Input Voltage with External Component
(Note 3)
Power Dissipation
(Note 4)
CANL and CANH Terminals
Continuous Voltage
Continuous Current
CANH and CANL Transient Voltage (Load Dump)
(Note 5)
CANH and CANL Transient Voltage
(Note 6)
-0.3 to V
SUP
+ 0.3
Internally Limited
V
A
V
-0.3 to 40
±2.0
±100
1.0
-27 to 40
200
40
±40
V
mA
V
W
V
mA
V
V
Notes
1. ESD1 testing is performed in accordance with the Human Body Model (C
ZAP
=100 pF, R
ZAP
=1500
Ω).
2.
3.
4.
5.
6.
ESD2 testing is performed in accordance with the Machine Model (C
ZAP
=200 pF, R
ZAP
=0
Ω).
Testing in accordance with ISO 7637-1. See also
Figure 2.
Maximum power dissipation at 85°C ambient temperature in free air with no heatsink, according to JEDEC JESD51-2 and JESD51-3
specifications.
Load dump test in accordance with ISO 7637-1.
Transient test in accordance with ISO 7637-1. See also
Figure 3.
33742
1.0 nF
Lx
10 kΩ
GND
Transient Pulse
Generator
(Note)
GND
33742
1.0 nF
CANH
CANL
GND
1.0 nF
Transient Pulse
Generator
(Note)
GND
Note
Waveform per ISO 7637-1. Test Pulses 1, 2, 3a, and 3b.
Note
Waveform per ISO 7637-1. Test Pulses 1, 2, 3a, and 3b.
Figure 2. ISO 7637 Test Setup for L0:L3 Inputs
Figure 3. ISO 7637 Test Setup for CANH/CANL
33742
4
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MOTOROLA ANALOG INTEGRATED CIRCUIT DEVICE DATA
Freescale Semiconductor, Inc.
MAXIMUM RATINGS (continued)
All voltages are with respect to ground unless otherwise noted.
Rating
Symbol
Value
Unit
THERMAL RATINGS
Operating Temperature
Ambient
Junction
Storage Temperature
Thermal Resistance Junction to GND Terminals
Peak Package Reflow Temperature During Solder Mounting
(Note 7)
T
A
T
J
T
STG
R
θ
JG
T
SOLDER
-40 to 125
-40 to 150
-55 to 165
20
240
°C
°C/W
°C
°C
Freescale Semiconductor, Inc...
Notes
7. Terminal soldering temperature limit is for 10 seconds maximum duration. Not designed for immersion soldering. Exceeding these limits
may cause malfunction or permanent damage to the device.
MOTOROLA ANALOG INTEGRATED CIRCUIT DEVICE DATA
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33742
5
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