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Analog Integrated Circuit Device Data
38
Freescale Semiconductor
33903/4/5
FUNCTIONAL DESCRIPTION
FUNCTIONAL PIN DESCRIPTION
INT has an internal pull-up structure to VDD. In LP VDD ON
mode, a diode is inserted in series with the pull-up, so the
high level is slightly lower than in other modes.
CANH, CANL, SPLIT, RXD, TXD
These are the pins of the high speed CAN physical
interface, between the CAN bus and the micro controller. A
detail description is provided in the document.
LIN, LIN-T, TXDL AND RXDL
These are the pins of the LIN physical interface. Device
contains zero, one or two LIN interfaces.
The MC33903, MC33903P, and MC33904 do not have a
LIN interface. However, the MC33903S/5S (S = Single) and
MC33903D/5D (D=Dual) contain 1 and 2 LIN interfaces,
respectively.
LIN, LIN1 and LIN2 pins are the connection to the LIN sub
buses.
LIN interfaces are connected to the MCU via the TXD,
TXD-L1 and TXD-L2 and RXD, RXD-L1 and RXD-L2 pins.
The device also includes one or two HS switches to VSUP/
2 pin which can be used as a LIN master termination switch.
Pins LINT, LINT-1 and LINT-2 pins are the same as
I/O-2 and I/O-3.