33742 datasheet(26/70 Pages) FREESCALE

Part #	33742

Description	System Basis Chip with Enhanced High Speed CAN Transceiver

PDF	70 Pages

Scroll/Zoom	100%

Manufacturer	FREESCALE [Freescale Semiconductor, Inc]

Direct Link	http://www.freescale.com

Logo

26 / 70 page

Analog Integrated Circuit Device Data

Freescale Semiconductor

33742

FUNCTIONAL DESCRIPTION

FUNCTIONAL INTERNAL BLOCK DESCRIPTION

MCU INTERFACE

SPI INTERFACE

The IC and the MCU communicate using the SPI control

and status reporting registers. The clock speed (SCLK) can

be as high as 4.0MHz.

RESET & INT

These 2 outputs notify the MCU when the IC is in reset

mode, or when an enabled interrupt condition has occurred.

WATCHDOG TIMER

The timer can be used as a watchdog window or watchdog

timeout function. The SPI control register provide the choice

as well as the timeout value. When the watchdog timer is not

properly serviced by the MCU, an error signal (WDOGN low)

and a reset signal (RSTN low) are output.

CAN INTERFACE/CONTROL

The operation of the CAN interface is controlled by the

MCU through the use of SPI control register bits.

33742 Datasheet(PDF) 26 Page - Freescale Semiconductor, Inc