MC33742DW Freescale, MC33742DW Datasheet - Page 60

• Manufacturer Part Number: MC33742DW
• Manufacturer: Freescale

Specifications of MC33742DW

• Data Rate: 1000Kbps
• Number Of Transceivers: 1
• Standard Supported: CAN 2.0
• Operating Supply Voltage (max): 27V
• Operating Supply Voltage (typ): 5/9/12/15/18/24V
• Operating Supply Voltage (min): 4.5V
• Package Type: SOIC W
• Supply Current: 45mA
• 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

POWER-UP AND VDD GOING LOW WITH SLEEP MODE AS DEFAULT LOW POWER MODE IS SELECTED
over-current or short-circuit (for instance, short to 4.0V), and if the low power mode previously selected was Sleep mode and if
the BATFAIL flag has been cleared, the 33742 enters in Reset mode for a time period of 100ms. The WDOG pin stays HIGH,
but the high level (VOH) follows VDD level. The RST and INT pins are low. After 100ms the 33742 goes into Sleep mode, and
the VDD and V2 are off.
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60
33742
TYPICAL APPLICATIONS
The first part of Figure 35 is identical to Figure 34. If VDD is pulled below the VDD under-voltage reset (typ 4.6V), say by an
Figure 35 shows an example wherein VDD is shorted to 4.0V, and after 100ms the 33742 enters Sleep mode.
CAN Connector
Legend
R5: 60Ω
CL, CH: 220pF
CANH
CANL
Figure 36. CAN Bus Standard Termination
VDD
SPI
WD
RST
INT
(CS)
SBC in
Reset
mode
CH
Figure 35. Under-voltage at VDD. Sleep mode selected.
CL
Reset each 350ms
SBC in Normal Request
& Reset modes
R5
CANH (33742)
CANL (33742)
Watchdog Refresh
SBC in Normal
mode
CANH
CANL
CAN Connector
Legend
R6, R7: 30Ω
CL, CH: 220pF
CS: > 470pF
Figure 37. CAN Bus Split Termination
SBC in Reset mode for
100ms, then enter
Sleep mode
SBC in Sleep mode
Under-voltage at VDD
100ms
Analog Integrated Circuit Device Data
CH
CL
Freescale Semiconductor
CS
Reset mode
R6
R7
CANH (33742)
CANL (33742)