33902 Datasheet, PDF(28/31 Page) Freescale Semiconductor, Inc – High Speed CAN Interface with Embedded 5.0 V Supply

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33902 Datasheet, PDF (28/31 Pages) Freescale Semiconductor, Inc – High Speed CAN Interface with Embedded 5.0 V Supply

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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

VDD pin

Output. Requires local decoupling capacitor(s). No extra Input. Requires connection to a 5.0 V supply.

load should be connected.

Wake pin

ERR pin

Fixed threshold typ 3.0 V with hysteresis. No pull-up or Threshold VBAT -3.0 V. Active pull-up when input is above

pull-down. High-impedance input. Connect to GND when threshold. Active pull-down when input is below threshold.

not used.

Active low, reports flags, or used as MISO during P_SPI Active low, reports flags, weak driver, requiring 8.0 Î¼s

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

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

MOSI during P_SPI communication.

Bus dom failure

flag

Failure reported on ERR pin in Normal mode

Failure reported on the ERR pin in Listen Only mode

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

VDD low flag

No effect on device mode. Failure on CAN transceiver

supply should not affect the complete ECU. VDD is

disabled âlocallyâ to reduce current consumption. The

ERR pin is set low in Normal and Listen Only mode. VDD

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.

VIO low flag

Wake-up time

Transition time

Same

From Sleep or Standby mode, device needs 35 Î¼s typ. to No need for a delay for device ready.

be ready.

At least 8.0 Î¼s, to differentiate between a static transition

and P_SPI communication

Immediate transition. However, the ERR pin has weak driver

and an 8.0 Î¼s stabilization time is required. When the device

is switched between Normal and Listen Only mode to check

the fail flag, a delay of 8.0 Î¼s is needed.

33902

Analog Integrated Circuit Device Data

Freescale Semiconductor

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