NXP Semiconductors MCZ33904C3EKR2

Overview

MCZ33904C3EKR2 from NXP (formerly Freescale) is a second-generation System Basis Chip (SBC) designed as an automotive power management and communication interface unit for MCU-based ECUs. It integrates a 5.0 V/150 mA MCU voltage regulator (VDD), high-speed CAN transceiver (ISO 11898-2/5 compliant), secured SPI with watchdog, fail-safe state machine, and four configurable wake-up I/O pins. It serves in body control modules requiring robust low-power operation and cranking pulse resilience.

For engineers reviewing the MCZ33904C3EKR2 datasheet, MCZ33904C3EKR2 pinout, MCZ33904C3EKR2 application, or MCZ33904C3EKR2 equivalent, key selection considerations include its 5.0 V VDD output, absence of LIN interface, 4-wake-up I/O capability, VAUX/VSENSE/MUX support, and SOIC-32 exposed-pad package - all critical for ECU power architecture and diagnostic design.

Technical Context

The MCZ33904C3EKR2 implements a fail-safe state machine linked to the SAFE pin and supports cranking pulse management during VDD undervoltage events. Its CAN physical layer complies with ISO 11898-2 and -5, enabling bus failure diagnostics and fail-safe operation without external components.

It features high-precision VSUP sensing, analog multiplexing (MUX-OUT), and configurable I/Os usable as wake-up inputs only - no LIN termination capability. The device operates across −40 °C to +125 °C and supports ultra-low sleep current (15 µA with VDD OFF).

Key Specifications

Pinout & Package

MCZ33904C3EKR2 is housed in a Pb-free 32-pin SOIC Wide-body package with exposed thermal pad (98ASA10556D). The package supports mechanical stability and thermal dissipation in automotive ECU environments.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar System Basis Chip applications.

Compared with MCZ33904C3EKR2, MCZ33904B3EKR2 offers refined silicon performance without layout change, while MCZ33903C5EKR2 sacrifices wake-up flexibility and analog monitoring - making MCZ33904C3EKR2 optimal for mid-tier body ECUs needing balanced integration and diagnostics.

Availability

MCZ33904C3EKR2 is available at Aetrix Electronics and suitable for body control modules, door modules, seat modules, and lighting control modules requiring stable component supply, automotive qualification, and long-term lifecycle support.

Supply support for MCZ33904C3EKR2 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

NXP Semiconductors is a global leader in automotive, industrial, and IoT semiconductor solutions, with deep expertise in SMARTMOS analog-power integration and functional safety compliance.

The MC33904 belongs to NXP's System Basis Chip Gen2 family, engineered specifically for automotive electronic control units needing integrated power regulation, high-speed CAN, fail-safe operation, and ultra-low-power sleep modes - targeting body, chassis, and lighting domains.

FAQ

Does MCZ33904C3EKR2 support LIN communication?

No, MCZ33904C3EKR2 does not include any LIN transceiver or LIN interface. It is part of the MC33904 variant, which is defined in the datasheet as having zero LIN interfaces - unlike MC33903D, MC33904, or MC33905 variants. All I/O pins on MCZ33904C3EKR2 are designated exclusively for wake-up input functionality, with no LIN termination or protocol support.

What is the maximum output current of the VDD regulator in MCZ33904C3EKR2?

The VDD regulator in MCZ33904C3EKR2 delivers a fixed 5.0 V output with a maximum continuous current of 150 mA. Unlike MC33905 or MC33903D variants, the MC33904 does not support external PNP ballast transistor implementation, so output current cannot be scaled beyond 150 mA.

Can MCZ33904C3EKR2 be used in systems requiring analog signal monitoring?

Yes, MCZ33904C3EKR2 supports analog signal monitoring via its VSENSE input and analog MUX block. It allows multiplexing of multiple analog sources (e.g., temperature sensor, battery voltage divider) to a single MUX-OUT pin, enabling MCU ADC sampling without additional external circuitry.

Is MCZ33904C3EKR2 pin-compatible with other MC3390x family members?

MCZ33904C3EKR2 shares the same SOIC-32 exposed-pad package and pinout with MC33903 and MC33904 variants, but is not pin-compatible with MC33905 or MC33903D/S due to differing I/O configurations and feature sets. Always verify pin function mapping using the MC33904-specific schematic and layout guidelines before substitution.

What safety features does MCZ33904C3EKR2 provide for automotive applications?

MCZ33904C3EKR2 includes a hardware-linked fail-safe state machine activated via the SAFE pin, cranking pulse management to sustain wake-up and CAN monitoring during low-VSUP events, secured SPI with parity, and ISO 11898-2/5-compliant CAN diagnostics - collectively supporting ASIL-B readiness when integrated into properly architected ECU systems.