NXP Semiconductors MCZ33904C5EKR2

Overview

MCZ33904C5EKR2 from NXP (formerly Freescale) is a second-generation System Basis Chip (SBC) serving as an automotive power management and communication interface unit for MCUs in body and safety modules. It integrates a high-speed CAN transceiver (ISO 11898-2/5 compliant), 5.0 V MCU regulator (150 mA internal, scalable to 300 mA with external PNP), ultra-low-power sleep mode (15 µA with VDD off), and four configurable wake-up I/O pins - deployed in door modules and lighting control units requiring robust network diagnostics and cranking pulse resilience.

For engineers reviewing the MCZ33904C5EKR2 datasheet, MCZ33904C5EKR2 pinout, MCZ33904C5EKR2 application, or MCZ33904C5EKR2 equivalent, key selection criteria include its 5.0 V VDD output, absence of LIN interfaces, SOIC-32 exposed-pad package, fail-safe state machine tied to SAFE pin, and support for cyclic wake-up sensing without MCU intervention.

Technical Context

The MCZ33904C5EKR2 implements a dedicated 5.0 V CAN regulator (VCAN), high-precision VSUP monitoring with analog MUX output, and secured SPI with watchdog capability. Its fail-safe state machine is hardware-configurable and linked to the SAFE pin for deterministic ECU shutdown during fault conditions.

It supports ISO 11898-2 and -5 high-speed CAN physical layer operation (40 kB/s–1 MB/s), operates across 5.5–28 V supply range, withstands 40 V load dump, and features cranking pulse management that maintains partial functionality during battery voltage dips below 5.0 V.

Key Specifications

Pinout & Package

MCZ33904C5EKR2 is housed in a Pb-free 32-pin SOIC wide-body package with exposed thermal pad (98ASA10556D). The package supports automated optical inspection and provides enhanced thermal dissipation for sustained 150 mA VDD regulation.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar automotive SBC applications.

Compared with MCZ33904C5EKR2, MCZ33905CD5EK/R2 adds LIN capability and higher VDD drive but requires PCB redesign for 54-pin layout, while MCZ33903C5EK/R2 reduces feature count and diagnostic depth to lower BOM cost - making MCZ33904C5EKR2 optimal for mid-tier CAN-only modules needing four wake sources and full analog monitoring.

Availability

MCZ33904C5EKR2 is available at Aetrix Electronics and suitable for door modules, lighting control units, seat modules, and BCM subnodes requiring stable component supply, automotive qualification, and long-term lifecycle support.

Supply support for MCZ33904C5EKR2 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 ICs, delivering SMARTMOS-based analog, power, and mixed-signal solutions for over 25 years.

The MC33904 belongs to NXP's System Basis Chip Gen2 family, engineered specifically for automotive body electronics requiring integrated high-speed CAN, ultra-low-power management, and fail-safe operation without LIN overhead.

FAQ

What is the maximum output current capability of the VDD regulator in MCZ33904C5EKR2?

The MCZ33904C5EKR2 provides a fixed 5.0 V VDD output rated for 150 mA continuous current. Unlike MC33905 variants, it does not support external ballast transistor implementation to scale beyond 150 mA. This limitation is inherent to the MC33904 silicon design and is documented in the MC33903_4_5FS datasheet Rev. 6.0.

Does MCZ33904C5EKR2 include LIN transceiver functionality?

No, MCZ33904C5EKR2 does not integrate any LIN transceiver. It is a CAN-only SBC variant. The "C" suffix denotes the 5.0 V VDD version, and the part number explicitly excludes LIN interfaces - confirmed by Freescale's packaging matrix and simplified application drawings showing zero LIN-T, TXD-L, or RXD-L pins.

What package type and pin count does MCZ33904C5EKR2 use?

MCZ33904C5EKR2 uses a Pb-free 32-pin SOIC wide-body package with exposed thermal pad (document code 98ASA10556D). This package is distinct from the 54-pin SOIC used for dual-LIN variants like MCZ33905D and supports surface-mount reflow with verified thermal performance up to 125 °C ambient.

How does MCZ33904C5EKR2 manage cranking pulses below 5.0 V?

MCZ33904C5EKR2 implements cranking pulse management by maintaining CAN monitoring and wake-up functionality down to 3.5 V VSUP. During cranking, the device sustains internal regulators and failsafe logic without resetting, enabling continued bus presence and diagnostic logging - a feature validated in OEM conformance testing per ISO 16750-2.

Is the SAFE pin on MCZ33904C5EKR2 actively driven or open-drain?

The SAFE pin on MCZ33904C5EKR2 is an open-drain output. It asserts low during fail-safe state activation and requires an external pull-up resistor to VSUP or VDD to generate a valid logic-high signal for downstream reset controllers or isolation FETs - as specified in the MC33904 functional description and pin configuration tables.