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NXP Semiconductors MCZ33903CS3EK
- Part No.:
- MCZ33903CS3EK
- Manufacturer:
- NXP Semiconductors
- Category:
- Specialized
- Package:
- 32-SSOP (0.295", 7.50mm Width) Exposed Pad
- Datasheet:
-
MCZ33903CS3EK.pdf
- Description:
- IC INTERFACE SPECIALIZED 32SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,633
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Product details
Overview
MCZ33903CS3EK 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 in body, safety, and powertrain systems. It integrates a 5.0 V/150 mA MCU voltage regulator (VDD), high-speed CAN transceiver (ISO 11898-2/5 compliant), single LIN 2.1/J2602-2 interface, secured SPI with watchdog, and fail-safe state machine. It operates from 5.5–28 V input and supports -40 °C to 125 °C ambient temperature.
For engineers reviewing the MCZ33903CS3EK datasheet, MCZ33903CS3EK pinout, MCZ33903CS3EK application, or MCZ33903CS3EK equivalent, key selection considerations include its 5.0 V VDD output, single LIN capability, 32-pin SOICW-EP package, 15 µA sleep current, and integrated CAN/LIN physical layers - all critical for low-power, safety-conscious automotive ECU designs.
Technical Context
The MCZ33903CS3EK implements a dedicated 5.0 V internal regulator for CAN driver supply (5 V-CAN), a configurable VDD LDO (5.0 V, 150 mA, no external PNP support), and a fail-safe state machine linked to the SAFE pin. Its LIN interface supports 10.4–20 kB/s data rates (100 kB/s fast mode), and CAN supports 40 kB/s–1 MB/s.
It features three wake-up capable I/O pins (configurable as wake-up inputs or LIN termination outputs), high-precision VSUP sensing, and analog multiplexing (MUX-OUT) for monitoring battery voltage and other signals - all without VAUX, VSENSE, or MUX support per the "C" variant specification.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDD Output Voltage | 5.0 V fixed; powers MCU core logic at stable rail, no external ballast transistor support. |
| Max VDD Output Current | 150 mA; sufficient for mid-tier automotive MCUs (e.g., S12x, S08x) without external boost. |
| CAN Interface | High-speed, ISO 11898-2 and 11898-5 compliant; enables robust vehicle network communication up to 1 MB/s. |
| LIN Interface | Single LIN 2.1 / SAE J2602-2 transceiver; supports master/slave operation at 10.4–20 kB/s (100 kB/s fast mode). |
| Sleep Current | 15 µA (VDD OFF); enables ultra-low quiescent consumption during ECU standby with active CAN/LIN wake-up. |
| Operating Voltage Range | 5.5–28 V; accommodates full automotive battery range including cranking dips and load dump transients (40 V max). |
| Package | 32-pin SOICW-EP (exposed pad); RoHS-compliant, thermally enhanced for under-hood mounting. |
Pinout & Package
MCZ33903CS3EK uses a 32-pin SOICW-EP (exposed pad) package with thermal enhancement for automotive under-hood environments. Pin functions are defined per the MC33903S simplified application drawing and confirmed for "C" variants.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | MCU Power Supply Output | 5.0 V regulated output; supplies MCU core logic (150 mA max, no external PNP support). |
| VSUP | Main Supply Input | Battery input (5.5–28 V); feeds internal regulators and enables cranking pulse management. |
| CANH / CANL | CAN Bus Differential Pair | Direct connection to high-speed CAN bus; includes built-in termination and fault protection. |
| LIN-T | LIN Bus Terminal | Configurable LIN master termination output; supports LIN 2.1 physical layer compliance. |
| RXD-L / TXD-L | LIN Data Interface | UART-style digital interface between MCU and LIN transceiver; enables protocol handling in software. |
| SAFE | Fail-Safe State Machine Output | Open-drain signal indicating safe/fault state; used to control external safety-critical subsystems. |
| CS / SCLK / MOSI / MISO | SPI Interface | Secured 4-wire SPI for configuration, diagnostics, and watchdog control; supports parity and windowed timeout. |
| INT | Interrupt Output | Active-low interrupt signaling MCU on CAN/LIN events, wake-up detection, or fault conditions. |
| I/O-0, I/O-1, I/O-2 | Configurable Wake-Up I/O | Three pins support wake-up input mode or LIN termination output; no VAUX/VSENSE/MUX functionality in this variant. |
Key Features
| Feature | Design Value |
|---|---|
| Secured SPI with Watchdog | Hardware-enforced register access with parity, time-out, and windowed watchdog - prevents MCU lockup and ensures deterministic recovery. |
| Innovative Cranking Pulse Management | Maintains partial functionality (e.g., CAN wake-up, SAFE assertion) during battery dips below 6 V - eliminates need for external hold-up capacitors. |
| Fail-Safe State Machine | Configurable hardware state machine tied to SAFE pin; enables pre-defined safe states (e.g., disable outputs, assert fault) without MCU intervention. |
| Ultra-Low Sleep Current | 15 µA quiescent current with VDD OFF and CAN/LIN wake-up enabled - meets OEM requirements for extended ECU sleep modes. |
| ISO 11898-2/5 + LIN 2.1 Compliance | Fully certified physical layers reduce validation effort and ensure interoperability across OEM networks and LIN slave devices. |
Applications
| Body Controller Module | Seat Module |
|---|---|
Use Scenario: Centralized control of door locks, windows, mirrors, and interior lighting in modern vehicle body domains. IC Role / Device Role / Timing Role: MCZ33903CS3EK serves as primary power manager and communication hub - supplying 5.0 V to S12x MCU while enabling CAN gateway and LIN slave control of actuators. Use Value: Integrated CAN/LIN reduces BOM count by eliminating discrete transceivers; 15 µA sleep current extends battery life during vehicle off-state. | Use Scenario: Real-time monitoring and actuation of seat position, heating, and occupancy sensors in premium seating systems. IC Role / Device Role / Timing Role: MCZ33903CS3EK provides regulated 5.0 V power to MPC560x MCU and interfaces via LIN to seat motor drivers and thermal sensors. Use Value: Fail-safe state machine asserts SAFE pin on overtemperature or supply fault - triggering immediate seat movement halt per ASIL-B requirements. |
| Lighting Control Module | Engine Management Low-End |
Use Scenario: Adaptive front-lighting and rear lamp cluster control with diagnostics and PWM dimming. IC Role / Device Role / Timing Role: MCZ33903CS3EK delivers stable 5.0 V to S08x MCU and manages LIN communication with LED driver ICs and ambient light sensors. Use Value: Configurable wake-up I/O pins detect headlight switch activation or CAN message triggers - enabling rapid system wake from 15 µA sleep. | Use Scenario: Cost-optimized engine control for entry-level ICE platforms using S12x or MPC563x MCUs. IC Role / Device Role / Timing Role: MCZ33903CS3EK supplies 5.0 V to MCU, hosts CAN for sensor data aggregation, and supports LIN for throttle actuator feedback. Use Value: Cranking pulse management sustains CAN wake-up and SAFE signaling down to 5.5 V - ensuring limp-home functionality during cold starts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar System Basis Chip applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCZ33903BS3EK | 3.3 V VDD output; same 32-pin SOICW-EP package and single LIN interface; "B" revision includes improved oscillator and VSUP ramp behavior. | Requires 3.3 V MCU; suitable where lower VDD voltage reduces MCU power or enables mixed-voltage domain design. | Select MCZ33903BS3EK when interfacing with 3.3 V MCUs (e.g., MPC560x) and benefitting from enhanced startup reliability. |
| MCZ33904C3EK | No LIN interface; adds fourth wake-up I/O; retains 5.0 V VDD, CAN, and same 32-pin SOICW-EP package. | Targeted at CAN-only gateways or modules requiring extra wake-up sources but no LIN connectivity. | Choose MCZ33904C3EK for pure CAN-based ECUs needing additional wake-up flexibility without LIN overhead. |
Compared with MCZ33903CS3EK, MCZ33903BS3EK offers identical feature set at 3.3 V for lower-power MCUs, while MCZ33904C3EK removes LIN to free one I/O for wake-up - enabling simpler CAN-centric designs with expanded wake-up coverage.
Availability
MCZ33903CS3EK is available at Aetrix Electronics and suitable for body controller modules, seat modules, lighting control units, and engine management low-end ECUs requiring stable component supply, automotive-grade qualification, and long-term lifecycle support.
Supply support for MCZ33903CS3EK 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 certification.
The MC33903 family is part of NXP's System Basis Chip Gen2 platform, engineered specifically for automotive ECU power management and communication consolidation - reducing board space, BOM cost, and validation effort in body, safety, and powertrain applications.
FAQ
What is the maximum output current of the VDD regulator in MCZ33903CS3EK?
The MCZ33903CS3EK provides a fixed 5.0 V VDD output rated for up to 150 mA. Unlike higher-current variants (e.g., MCZ33903D), it does not support external PNP ballast transistors - making it ideal for mid-tier MCUs like S12x or S08x that operate within this current envelope without requiring external boost circuitry.
Does MCZ33903CS3EK support both CAN and LIN communication simultaneously?
Yes, MCZ33903CS3EK integrates a high-speed CAN transceiver (ISO 11898-2/5 compliant) and a single LIN 2.1/J2602-2 transceiver on-die. Both interfaces operate concurrently - enabling the device to serve as a dual-bus ECU hub, such as a body controller managing CAN-based gateway functions and LIN-connected door modules.
What wake-up capabilities does MCZ33903CS3EK provide?
MCZ33903CS3EK offers three configurable I/O pins (I/O-0, I/O-1, I/O-2) that support wake-up input mode. These pins can detect edge-triggered events on LIN bus activity, CAN dominant pulses, or external signals - allowing the ECU to exit 15 µA sleep mode rapidly while maintaining full diagnostic visibility.
Is MCZ33903CS3EK qualified for automotive under-hood temperatures?
Yes, MCZ33903CS3EK is specified for operation from -40 °C to +125 °C ambient temperature and packaged in a thermally enhanced 32-pin SOICW-EP. Its design meets AEC-Q100 Grade 1 requirements, making it suitable for under-hood placement in engine management, lighting, and HVAC control modules.
What safety features are implemented in MCZ33903CS3EK?
MCZ33903CS3EK includes a hardware-based fail-safe state machine linked to the SAFE pin, secured SPI with parity and windowed watchdog, cranking pulse resilience down to 5.5 V, and comprehensive diagnostics (CAN/LIN bus failure detection, supply monitoring). These features support ASIL-B system-level compliance when integrated into properly architected ECU designs.
MCZ33903CS3EK Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- 32-SSOP (0.295", 7.50mm Width) Exposed Pad
- Packaging:
- Tube
- Product Status:
- Obsolete
- Applications:
- System Basis Chip
- Interface:
- CAN, LIN
- Voltage - Supply:
- 5.5V ~ 28V
- Supplier Device Package:
- 32-SSOP-EP
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
MCZ33903CS3EK FAQ
1.How can I place an order for MCZ33903CS3EK through Aetrix?
Please submit a Request for Quotation (RFQ) for MCZ33903CS3EK on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for MCZ33903CS3EK reliable?
The price and inventory of MCZ33903CS3EK are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MCZ33903CS3EK is usually 5 days.
3.What payment methods are accepted for MCZ33903CS3EK?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MCZ33903CS3EK transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MCZ33903CS3EK?
MCZ33903CS3EK orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MCZ33903CS3EK order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for MCZ33903CS3EK?
For technical support, including MCZ33903CS3EK datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MCZ33903CS3EK requirements.
6.How does Aetrix verify that MCZ33903CS3EK is sourced from the original manufacturer or authorized distributors?
All MCZ33903CS3EK products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MCZ33903CS3EK meets industry standards.
7.What is the process for return or replacement of MCZ33903CS3EK?
All MCZ33903CS3EK units undergo pre-shipment inspection (PSI). If there is an issue with MCZ33903CS3EK, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The MCZ33903CS3EK part is unused and in its original packaging.
Return procedure for MCZ33903CS3EK:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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