SYSTEM BASIS CHIP WITH LOW SPEED FAULT TOLERANT CAN INTERFACE

The MC33889 is a monolithic integrated circuit combining functions frequently used in microcontroller based systems. A fully protected fixed 5.0 V low drop regulator output with current limit, over temperature pre-warning, and reset provides power for CAN and the MCU. The MC33889 also provides the drive and sense inputs necessary to implement a second 5.0 V regulator,using an external series pass PNP, that is resistor ratio adjustable to meet peripheral needs. MC33889 has normal, standby, stop, and sleep modes, an internally switched high-side power supply voltage output with two wake-up inputs, programmable window Watch-Dog, Interrupt, Reset, fault tolerant low speed CAN transceiver for module-to-module communication, The combination is an economical solution for providing power, low speed fault tolerant communication, and control needed for MCU based systems.

Provides complete MCU power management solution with few components

Internal Wake-up and Watch-Dog function

Freescale Semiconductor offers a complete roadmap of CAN transceiver and System Basis Chips (SBC)

Simple system design with direct interfacing to a microprocessor

Reduced PC board space resulting in enhanced application reliability

Economical solution with an optimized performance/cost ratio

Simplified MCU power supply design with internal safety features and output voltage supervisory circuits