Analog Integrated Circuit Device Data

28

Freescale Semiconductor

33902

COMPARISON WITH COMPETITION 14 PIN HIGH SPEED CAN TRANS-

CEIVER

COMPARISON WITH COMPETITION 14 PIN HIGH SPEED CAN TRANSCEIVER

The table below is a comparison between the MC33902 and the competition 14 pin high speed CAN transceiver having no

embedded power supply.

Item

MC33902

Competition w/o Embedded Regulator

Output. Requires local decoupling capacitor(s). No extra

load should be connected.

Input. Requires connection to a 5.0 V supply.

Wake pin

Fixed threshold typ 3.0 V with hysteresis. No pull-up or

pull-down. High-impedance input. Connect to GND when

not used.

threshold. Active pull-down when input is below threshold.

Active low, reports flags, or used as MISO during P_SPI

communication. Strong driver (capability typ. 3.0 mA).

Active low, reports flags, weak driver, requiring 8.0

stabilization time

EN and STBY pins Input used for static mode control. Used as CLOCK and

MOSI during P_SPI communication.

Input used for mode control.

Bus dom failure

flag

Failure reported on

(considered as a bus failure => reported in Normal mode)

Failure reported on the

(considered as a local failure)

No effect on device mode. Failure on CAN transceiver

disabled “locally” to reduce current consumption. The

low threshold set at 4.25 V

Set the device into Sleep mode. INH is turned OFF. If the ECU

regulator is controlled by INH, ECU is turned OFF.

Same

Same

Wake-up time

From Sleep or Standby mode, device needs 35

be ready.

No need for a delay for device ready.

Transition time

At least 8.0

and P_SPI communication

Immediate transition. However, the

and an 8.0

is switched between Normal and Listen Only mode to check

the fail flag, a delay of 8.0