MC33989PEGR2

Specialized Overview

The MC33989PEGR2 is a System Basis Chip (SBC) designed for automotive Engine Control Units, integrating essential microcontroller support functions in a 28-pin SOICW package. It features a high-speed CAN physical interface capable of 1.0 MBaud and an SPI interface for MCU communication. The device includes two voltage regulators: a 5.0 V digital regulator (VDD1) with 200 mA output and a tracking regulator (V2) controlled by an external transistor. It provides four high-voltage wake-up inputs, VSUP monitoring, and fault detection circuitry. Operating on a supply voltage range of 5.5 V to 18 V, it supports automotive-grade reliability with an operating temperature range of -40 °C to 125 °C.

Specialized Feature Summary

• Integrates a high-speed CAN transceiver with programmable slew rates and low-power sleep modes.
• Provides dual voltage regulation with a protected 5.0 V digital output and a flexible external tracking regulator.
• Includes four high-voltage wake-up inputs and internal high-side switch driver for peripheral control.
• Features comprehensive power management with VSUP monitoring, reset control, and software watchdog timer.

Specialized Applications

• Automotive Engine Control Units (ECUs)
• Small engine control systems
• Motorcycle electronic control modules

Specialized Procurement Notes

Verify the EG suffix indicates lead-free packaging compliant with JEDEC standards. Confirm the R2 suffix denotes tape-and-reel shipping format. Check current product status as this component may be discontinued or subject to change without notice per manufacturer documentation.

Specialized Selection Notes

Select this SBC when a monolithic solution combining CAN communication, power regulation, and system management is required for automotive ECUs. Ensure compatibility with the target MCU's SPI interface speed and voltage levels. Verify that the external ballast transistor requirements for the V2 regulator align with the application's peripheral power needs.

Specialized Part Context

The MC33989 belongs to the NXP/Freescale System Basis Chip family, specifically designed to simplify ECU design by integrating analog and mixed-signal functions typically found in discrete implementations. It serves as a companion IC to microcontrollers, reducing board space and component count in automotive powertrain applications.

Specialized Replacement Considerations

Check for direct pin-compatible alternatives within the MC339xx series. Verify if updated revisions offer improved thermal performance or additional safety features. Ensure any substitute maintains the same 28-SOICW package and electrical characteristics for CAN and SPI interfaces.