MC33663ALEFR2 Freescale Semiconductor, MC33663ALEFR2 Datasheet - Page 27

• Manufacturer Part Number: MC33663ALEFR2
• Description: LIN Transceivers dual LINcell
• Manufacturer: Freescale Semiconductor

Specifications of MC33663ALEFR2

• Rohs: yes
• Operating Supply Voltage: 7 V to 18 V
• Supply Current: 22 uA
• Maximum Operating Temperature: + 125 C
• Package / Case: SOIC-14
• Minimum Operating Temperature: - 40 C
• Mounting Style: SMD/SMT

ENABLE INPUT PINS (EN1, EN2)
(TXD2) to LIN1 (LIN2) after t
3.3 V and 5.0 V compatible. RXD1 (RXD2) V
by setting EN1 (EN2) LOW for a delay higher than t
during this delay. (see
operation (see
INHIBIT OUTPUT PINS (INH1, INH2)
can be used to control an external switchable voltage regulator having an inhibit input. It can also be used to drive the LIN bus
external resistor in the master node application, thanks to its high drive capability. This is illustrated in
be disabled. If the master node pull-up resistor is connected to INH1 (INH2), the pull-up resistor will be unpowered and left
floating.
recessive state. An external 10 to 100 pF capacitor on INH1 (INH2) pin is advised in order to improve EMC performances.
WAKE INPUT PINS (WAKE1, WAKE2)
usually connected to an external switch in the application.
transitions. When entering into Sleep mode, the corresponded LIN Module monitors the state of its WAKE pin and stores it as a
reference state. The opposite state of this reference state will be the wake-up event used by the LIN Module to enter again into
Normal mode.
deglitcher lower than t
input structure exhibits a high-impedance, with extremely low input current when voltage at this pin is below 27 V. Two serial
resistors should be inserted in order to limit the input current mainly during transient pulses and ESD. The total recommended
resistor value is 33 kΩ. An external 10 to 100 nF capacitor is advised for better EMC and ESD performances.
be connected to ground to avoid a false wake-up.
Analog Integrated Circuit Device Data
Freescale Semiconductor
EN1 (EN2) input pin controls the operation mode of the interface. If EN1 (EN2) = 1, the interface is in Normal mode, TXD1
A combination of the logic levels on EN1 (EN2) and TXD1 (TXD2) pins allows the device to enter in Fast Baud Rate mode of
The INH1 (INH2) output pin is connected to an internal high side power MOSFET. The pin has two possible main functions. It
In Sleep mode, INH1 (INH2) is turned OFF. If a voltage regulator inhibit input is connected to INH1 (INH2), the regulator will
In case of a INH1 (INH2) thermal shutdown, the high side is turned off and the LIN1 (LIN2) transmitter and receiver are in
The WAKE1 (WAKE2) pin is a high-voltage input used to wake-up the device from the Sleep mode. WAKE1 (WAKE2) is
The WAKE1 (WAKE2) pin has a special design structure and allows wake-up from both HIGH to LOW or LOW to HIGH
If the WAKE1 (WAKE2) pin state changes during the Sleep mode Delay Time (t
An internal filter is implemented to avoid false wake-up event due to parasitic pulses (See
Important The WAKE1 (WAKE2) pin should not be left open. If the wake-up function is not used, WAKE1 (WAKE2) should
Figure
19).
WF
Figure
, the LIN Module will not enter in Sleep mode, but will go into Awake mode (See
FIRS_DOM
22). Both LIN Modules enter Sleep Mode if EN1 & EN2 LOW.
delay and LIN1 (LIN2) to RXD1 (RXD2) paths are both active. EN1 (EN2) pin thresholds are
OH
level follows EN1 (EN2) pin high level. One LIN Module enters the Sleep Mode
SD
(70 µs typ. value) and if the WAKE1 (WAKE2) pin state doesn’t change
SD
) or before EN1 (EN2) goes low with a
Figure
FUNCTIONAL PIN DESCRIPTION
FUNCTIONAL DESCRIPTION
16). WAKE1 (WAKE2) pin
Figure
Figure
26.
23).
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