NXP Semiconductors MCZ33810EKR2

Overview

MCZ33810EKR2 from NXP Semiconductors (formerly Freescale) is an automotive-grade eight-channel engine control IC comprising four integrated low-side injector drivers and four configurable low-side gate pre-drivers. It operates across 4.5–36 V VPWR, delivers up to 4.5 A injector current limit, supports SPI/parallel/PWM control, and integrates spark duration, dwell time, and coil current sensing for gasoline engine management systems.

For engineers reviewing the MCZ33810EKR2 datasheet, MCZ33810EKR2 pinout, MCZ33810EKR2 application, or MCZ33810EKR2 equivalent, this page provides verified functional identity, validated 32-pin SOICW-EP package mapping, confirmed dual-mode operation (ignition IGBT vs. general-purpose MOSFET pre-driver), real-world fault diagnostics (open-load, short-to-battery, overtemperature), and precise SPI timing parameters for ECU integration.

Technical Context

The MCZ33810EKR2 implements a dual-path architecture: four dedicated low-side injector drivers with active clamp and self-limiting current (up to 4.5 A), and four gate pre-drivers configurable via SPI for either ignition IGBT control (with spark duration timer and secondary flyback clamping at VPWR +11 V) or general-purpose MOSFET driving (with short-circuit protection, inductive flyback handling, and programmable fault timers).

Its digital interface uses a 3.3 V/5.0 V SPI protocol (6 MHz max) with chip-select–synchronized status reporting, while analog supervision includes VPWR undervoltage lockout (4.0 V threshold), overvoltage shutdown (39 V), and thermal shutdown (155 °C). All outputs are controlled independently via parallel inputs (DINx/GINx) logically ORed with SPI register contents.

Key Specifications

Pinout & Package

The MCZ33810EKR2 is housed in a 32-pin SOICW-EP (exposed pad) package with 0.65 mm pitch. The exposed pad serves as the sole ground reference for analog, digital, and power domains and must be soldered to a low-impedance PCB ground plane for thermal and electrical integrity.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MC33811EKR2 and TPIC46L01QPWPRQ1, the MCZ33810EKR2 uniquely combines injector drive, ignition gate pre-driving, and coil current sensing in one package-making it the only option supporting full gasoline engine management without supplemental ICs.

Availability

MCZ33810EKR2 is available at Aetrix Electronics and suitable for gasoline engine management, motorcycle ECU development, and hybrid vehicle actuator control requiring stable component supply, long-term automotive lifecycle support, and AEC-Q100-compliant sourcing.

Supply support for MCZ33810EKR2 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 acquired Freescale in 2015 and maintains full product continuity, documentation, and automotive qualification for legacy Freescale analog ICs including the MC338xx family.

The MCZ33810EKR2 belongs to NXP's automotive power analog portfolio, designed specifically for engine control units requiring integrated, fault-tolerant, multi-channel driver solutions with embedded diagnostics and robust EMC performance.

FAQ

What is the function of the SPKDUR pin on the MCZ33810EKR2?

The SPKDUR pin on the MCZ33810EKR2 is an open-drain output that goes low while feedback inputs FB0–FB3 remain above the programmed spark detection threshold. It directly indicates active spark events in ignition IGBT mode and is used to synchronize external timing circuits or logging functions. This signal is not active in general-purpose gate pre-driver (GPGD) mode. The MCZ33810EKR2 uses SPKDUR to provide real-time spark duration feedback without requiring MCU polling of SPI registers.

Does the MCZ33810EKR2 support both 3.3 V and 5.0 V microcontroller interfaces?

Yes, the MCZ33810EKR2 supports both 3.3 V and 5.0 V logic levels via its VDD supply pin, which sets the voltage reference for the SPI interface (CS, SCLK, SI, SO) and internal logic buffers. Input thresholds scale with VDD (VIH = 0.7 × VDD), and SO output swing is VDD − 0.4 V (high) and ≤0.4 V (low). This eliminates level-shifting requirements when interfacing with mixed-voltage automotive MCUs. The MCZ33810EKR2 maintains full functionality across the 3.0–5.5 V VDD range.

How does the MCZ33810EKR2 handle overtemperature conditions?

The MCZ33810EKR2 incorporates a junction temperature sensor with overtemperature shutdown at 155 °C (typical), hysteresis of 10 °C, and automatic recovery once temperature falls below 145 °C. When triggered, all outputs disable while SPI communication remains active for diagnostic readout. Thermal protection is independent of VPWR/VDD states and applies uniformly to injector drivers and gate pre-drivers. The MCZ33810EKR2 reports overtemperature status via dedicated SPI fault register bits for immediate system response.

Can the MCZ33810EKR2 drive both fuel injectors and ignition coils simultaneously?

Yes-the MCZ33810EKR2 is explicitly designed for simultaneous operation: OUT0–OUT3 drive low-side fuel injectors (up to 4.5 A), while GD0–GD3 drive external IGBTs/MOSFETs for ignition coil control. Its dual-mode architecture allows concurrent use-e.g., injector firing timed via DINx while spark duration is managed via FBx feedback and SPKDUR output. Configuration is static per power-up and requires no runtime reconfiguration. The MCZ33810EKR2 enables full 4-cylinder engine control with one IC.

What is the purpose of the RSP and RSN pins on the MCZ33810EKR2?

The RSP and RSN pins on the MCZ33810EKR2 form a differential input to an internal current-sense amplifier that monitors voltage across an external sense resistor placed in the ignition coil return path. This enables real-time coil current measurement, feeding two comparator outputs: NOMI (nominal current flag) and MAXI (maximum current flag). These signals trigger dwell termination or fault shutdown. The MCZ33810EKR2 uses RSP/RSN to implement closed-loop ignition current control without external op-amps or ADCs.