MC33389CDW Freescale, MC33389CDW Datasheet - Page 43

• Manufacturer Part Number: MC33389CDW
• Manufacturer: Freescale

Specifications of MC33389CDW

• Number Of Transceivers: 1
• Power Down Mode: Sleep/Standby
• Operating Supply Voltage (max): 27V
• Operating Supply Voltage (typ): 9/12/15/18/24V
• Operating Supply Voltage (min): 5.5V
• Package Type: SOIC W
• Supply Current: 7mA
• Operating Temperature (max): 125C
• Operating Temperature (min): -40C
• Operating Temperature Classification: Automotive
• Mounting: Surface Mount
• Pin Count: 28
• Lead Free Status / RoHS Status: Not Compliant

their application.
• External bias of V1 and reset pin
• Turn OFF software watchdog in the Stand-by mode
• Special debug samples with software watchdog disable at
DEBUG AND PROGRAM DOWNLOAD INTO FLASH
MEMORY
and expects during the 75 ms time period in the NR mode, an
SPI trigger word (to enter Normal mode and select the
watchdog time period). If this does not occur, the SBC enters
the Sleep mode and turns off V1.
development tools, it is not always easy to make sure these
events happen properly. It is thus possible to externally
power the V1 line with an external 5.0 V supply, and to force
the Reset pin to V1 or to and external 5.0 V. These can be
Analog Integrated Circuit Device Data
Freescale Semiconductor
The SBC offers several capabilities to help users debug
power-up (contact local Motorola representative)
While the SBC is powered, it enters Normal Request mode
When the software is debugged, and when using
Ignition
S0
CAN bus # 2
LIN bus
Rp0
CAN bus # 1
(Wake-up input linked to peripheral circuits: (ex: low speed CAN or LIN transceivers).
CL0
Rs0
Figure 25. Typical Application Schematic 2
RH
1k
RL
+12V
Auxiliary 12V
VBAT
RTH
VSUP
RTL
CANH
CANL
LIN
C1
RH
MC33399
RL
GND
GND
INH
MC33388
C2
VDD
INH
VBAT
L2
RTL
CANH
CANL
RTH
V3
L0
L1
done at nominal voltage and temperature. By doing this, 5.0
V is provided to the MCU V
the reset pin is pulled low and is sinking 5 mA to ground. This
means, the external circuitry driving reset must have a
current capability higher than 5 mA in order to drive the reset
in the high-state.
DISABLE OF SOFTWARE WATCHDOG IN STAND-
BY MODE
only. In order to disable it the following operation must be
done:
• Write to MCR register–data 011 (bit 2, bit 1, bit 0)
• Write to MCVR register–data 011 (bit 2, bit 1, bit 0)
watchdog. However the V2 can not be turn on, and the CAN
cell can not be used.
Under this condition the SBC is not operational. However,
The software watchdog can be disable in Stand-by mode
Then the SBC enters the Stand-by mode without software
Tx/Rx
Tx/Rx
33389
GND
MISO
MOSI
SCK
RST
INT
CS
V2
V1
TX
RX
DD
C5
SPI bus
and reset lines.
C6
TYPICAL APPLICATIONS
Auxiliary 5V
RESET
INT
VDD
SPI
CAN 1
CAN 2
SCI
GND
33389
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