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NXP Semiconductors MCZ33903CD5EKR2
- Part No.:
- MCZ33903CD5EKR2
- Manufacturer:
- NXP Semiconductors
- Category:
- Specialized
- Package:
- 32-SSOP (0.295", 7.50mm Width) Exposed Pad
- Datasheet:
-
MCZ33903CD5EKR2.pdf
- Description:
- IC INTERFACE SPECIALIZED 32SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,394
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Product details
Overview
MCZ33903CD5EKR2 from NXP (formerly Freescale) is a second-generation System Basis Chip (SBC) integrating high-speed CAN, dual LIN transceivers, 5.0 V MCU regulator (150 mA), internal 5.0 V CAN supply, and fail-safe state machine for automotive body and powertrain ECUs. It operates from 5.5–28 V input, supports -40 °C to 125 °C ambient, and delivers 15 µA quiescent current in VDD-OFF low-power mode.
For engineers reviewing the MCZ33903CD5EKR2 datasheet, MCZ33903CD5EKR2 pinout, MCZ33903CD5EKR2 application, or MCZ33903CD5EKR2 equivalent, key selection criteria include dual-LIN interface support, ISO 11898-2/5 and LIN 2.1/J2602-2 compliance, configurable wake-up I/Os (up to 3), integrated VSUP sensing, and SOIC-32 exposed-pad packaging for thermal performance in space-constrained modules.
Technical Context
The MCZ33903CD5EKR2 implements an enhanced high-speed CAN physical layer compliant with ISO 11898-2 and ISO 11898-5, plus two independent LIN 2.1/J2602-2 transceivers with LIN master terminal outputs. Its fail-safe state machine is hardware-configurable and linked to the SAFE pin for deterministic ECU shutdown during fault conditions.
Power management includes a fixed 5.0 V LDO for MCU supply (150 mA, no external PNP support), dedicated 5.0 V regulator for CAN drivers, and high-precision VSUP monitoring with analog MUX output. Wake-up inputs are configurable as LIN terminations-supporting 1 wake-up + 2 LIN terms, 2 wake-up + 1 LIN term, or 3 wake-up only-enabling flexible ECU architecture without PCB redesign.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDD Output Voltage | Fixed 5.0 V, 150 mA max - powers MCU directly without external ballast transistor. |
| CAN Interface | High-speed, ISO 11898-2 and 11898-5 compliant - enables robust communication up to 1 Mbps on automotive CAN buses. |
| LIN Interfaces | Dual LIN 2.1 / SAE J2602-2 transceivers - supports two independent LIN subnets (e.g., door + seat modules) with master termination capability. |
| Low-Power Current | 15 µA (VDD OFF) - minimizes battery drain during vehicle sleep mode while maintaining CAN/LIN wake-up readiness. |
| Operating Voltage Range | 5.5 V to 28 V - accommodates full automotive battery range including cranking dips and load-dump transients up to 40 V. |
| Temperature Range | -40 °C to +125 °C - qualified for under-hood and chassis-mounted ECU applications per AEC-Q100 Grade 1. |
| ESD Protection | ±8 kV module-level on CAN and LIN pins - meets stringent OEM EMC/ESD requirements without external protection components. |
Pinout & Package
MCZ33903CD5EKR2 is housed in a Pb-free 32-pin SOIC Wide-body package with exposed thermal pad (98ASA10556D), optimized for thermal dissipation in automotive modules. Pin assignment follows Freescale's MC33903D family layout, supporting drop-in compatibility across B/C variants with same footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VSUP1 / VSUP2 | Main supply input | Accepts 5.5–28 V battery input; dual inputs enable redundancy or split-supply configurations. |
| VDD | MCU power output | Stable 5.0 V @ 150 mA - powers connected microcontroller without external regulation. |
| 5V-CAN | CAN driver supply | Dedicated 5.0 V regulator output - isolates CAN transceiver noise from MCU supply rail. |
| CANH / CANL | CAN differential pair | Direct connection to high-speed CAN bus; integrated termination and fault protection. |
| LIN-1 / LIN-2 | LIN bus outputs | Configurable as LIN master terminals - drive LIN subnets with programmable slew rate and short-circuit protection. |
| I/O-0 to I/O-2 | Wake-up / LIN term | Three multifunction pins - each can be set as wake-up input or LIN termination via configuration registers. |
| SAFE | Fail-safe control | Open-drain output tied to state machine - asserts low during fault to trigger external safety actions. |
| CS / SCLK / MOSI / MISO | SPI interface | Secured SPI with parity and watchdog - enables safe register access and diagnostics for functional safety compliance. |
Key Features
| Feature | Design Value |
|---|---|
| Dual LIN 2.1 Transceivers | Enables concurrent control of two LIN networks (e.g., lighting + HVAC) with integrated master termination and fault reporting. |
| Configurable Wake-up I/Os | Three pins dynamically assigned as wake-up sources or LIN terminations - reduces need for external logic and simplifies ECU pin planning. |
| Hardware Fail-Safe State Machine | Predefined safe states triggered by SAFE pin assertion - eliminates software dependency for critical failure response in ASIL-B systems. |
| High-Precision VSUP Monitoring | Internal analog MUX routes VSUP to ADC - enables accurate battery voltage tracking for cranking detection and low-voltage recovery logic. |
| Ultra-Low Sleep Current | 15 µA total quiescent draw with CAN/LIN wake-up enabled - extends vehicle battery life during extended parking periods. |
Applications
| Body Controller Module | Seat Control Module |
|---|---|
Use Scenario: Centralized control of door locks, window lifts, mirrors, and interior lighting in modern vehicle body domains. IC Role / Device Role / Timing Role: Primary SBC providing regulated 5.0 V power to MCU, dual-LIN connectivity to peripheral actuators, and CAN gateway functionality. Use Value: Eliminates discrete regulators and LIN transceivers - reduces BOM count by ≥7 components while enabling synchronized wake-up across LIN nodes. | Use Scenario: Real-time adjustment of seat position, heating, and memory functions using motor drivers and temperature sensors. IC Role / Device Role / Timing Role: Power management and communication hub - supplies MCU, monitors battery voltage during cranking, and communicates via LIN to seat motors and CAN to gateway. Use Value: Integrated VSUP sensing and fail-safe state machine ensure seat movement halts safely during low-battery events - meeting ASIL-B functional safety targets. |
| Door Module | Lighting Control Module |
Use Scenario: Smart door module managing handle proximity sensing, anti-pinch window control, and mirror folding via LIN subnetworks. IC Role / Device Role / Timing Role: Dual-LIN master with wake-up capability - manages two independent LIN clusters (e.g., window + mirror) and wakes MCU on valid LIN header detection. Use Value: Configurable I/O pins serve as both wake-up inputs and LIN terminations - avoids external resistors and saves PCB area in tight door cavity layouts. | Use Scenario: Adaptive front-lighting system (AFS) coordinating LED headlamp positioning, dimming, and diagnostics across multiple zones. IC Role / Device Role / Timing Role: Power supervisor and LIN interface - regulates MCU voltage, provides LIN communication to lamp drivers, and monitors supply stability during engine start. Use Value: 15 µA sleep current prevents parasitic drain on lighting battery backup - extending operational time during ignition-off periods without compromising responsiveness. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar System Basis Chip applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCZ33903BD5EKR2 | B-version with resolved VSUP slow-ramp behavior, improved oscillator stability, and lower sleep current vs. C-version. | Same pinout and feature set - preferred for new designs requiring enhanced startup reliability and reduced EMI susceptibility. | Select MCZ33903BD5EKR2 when prioritizing robustness during cold-cranking and long-term production lifecycle stability. |
| MCZ33904C5EKR2 | Single CAN, zero LIN interfaces, quad wake-up I/Os, includes VAUX and VSENSE - lacks dual-LIN but adds auxiliary regulation and analog monitoring. | Targeted at CAN-only gateways or sensor hubs where LIN is unnecessary but additional analog sensing is required. | Choose MCZ33904C5EKR2 if your design needs four wake-up sources and auxiliary 5.0 V/3.3 V regulation, but does not require LIN communication. |
Compared with MCZ33903CD5EKR2, the B-version offers verified improvements in VSUP ramp-up and oscillator jitter, while MCZ33904C5EKR2 trades dual-LIN capability for expanded I/O count and auxiliary regulation - making it suitable for CAN-centric architectures needing broader analog monitoring.
Availability
MCZ33903CD5EKR2 is available at Aetrix Electronics and suitable for body controller modules, seat control units, door modules, and lighting control systems requiring stable component supply, automotive-grade qualification, and long-term production continuity.
Supply support for MCZ33903CD5EKR2 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 semiconductor solutions, delivering high-reliability analog, power management, and microcontroller products built on SMARTMOS technology.
The MC33903 family is part of NXP's System Basis Chip portfolio designed specifically for automotive electronic control units requiring integrated power, communication, and safety-critical supervision in body, safety, and powertrain domains.
FAQ
What is the maximum output current of the VDD regulator in MCZ33903CD5EKR2?
The MCZ33903CD5EKR2 provides a fixed 5.0 V VDD output rated for 150 mA continuous current. Unlike higher-current variants (e.g., MC33904/05), this device does not support external PNP ballast transistors - its VDD regulator is internally limited and optimized for MCU power in compact body-domain ECUs. This rating ensures stable operation under full load while maintaining thermal safety in the SOIC-32 exposed-pad package.
Does MCZ33903CD5EKR2 support both LIN 2.1 and SAE J2602-2 standards?
Yes, MCZ33903CD5EKR2 integrates two fully compliant LIN transceivers supporting both LIN 2.1 and SAE J2602-2 protocols. Each LIN interface includes programmable slew rate control, short-circuit protection, and bus failure diagnostics - enabling interoperability with legacy and next-generation LIN slaves across automotive subsystems such as door modules and seat controls.
How many wake-up sources does MCZ33903CD5EKR2 support, and how are they configured?
MCZ33903CD5EKR2 supports up to three configurable wake-up sources via I/O-0, I/O-1, and I/O-2 pins. These pins are multiplexed: each can be independently set in configuration registers as either a wake-up input (with edge-triggered detection) or a LIN master termination resistor output. This flexibility allows dynamic allocation based on ECU topology - for example, 2 wake-up + 1 LIN term - without hardware changes.
Is MCZ33903CD5EKR2 qualified for automotive applications, and what is its temperature grade?
Yes, MCZ33903CD5EKR2 is AEC-Q100 qualified for automotive use and rated for operation from -40 °C to +125 °C ambient temperature (Grade 1). It meets stringent requirements for vibration, thermal cycling, and ESD (±8 kV module-level on CAN/LIN pins), making it suitable for under-hood, chassis, and interior ECU placements in production vehicles.
What is the purpose of the SAFE pin on MCZ33903CD5EKR2, and how does it function?
The SAFE pin on MCZ33903CD5EKR2 is an open-drain output tied directly to the hardware-based fail-safe state machine. When activated by internal fault conditions (e.g., overtemperature, undervoltage, or watchdog timeout), it pulls low to signal external safety circuitry - such as disabling motor drivers or asserting MCU reset - ensuring deterministic response without software intervention. This supports ASIL-B functional safety goals in body and powertrain applications.
MCZ33903CD5EKR2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- 32-SSOP (0.295", 7.50mm Width) Exposed Pad
- Packaging:
- Tape & Reel (TR)
- 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
MCZ33903CD5EKR2 FAQ
1.How can I place an order for MCZ33903CD5EKR2 through Aetrix?
Please submit a Request for Quotation (RFQ) for MCZ33903CD5EKR2 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 MCZ33903CD5EKR2 reliable?
The price and inventory of MCZ33903CD5EKR2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MCZ33903CD5EKR2 is usually 5 days.
3.What payment methods are accepted for MCZ33903CD5EKR2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MCZ33903CD5EKR2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MCZ33903CD5EKR2?
MCZ33903CD5EKR2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MCZ33903CD5EKR2 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 MCZ33903CD5EKR2?
For technical support, including MCZ33903CD5EKR2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MCZ33903CD5EKR2 requirements.
6.How does Aetrix verify that MCZ33903CD5EKR2 is sourced from the original manufacturer or authorized distributors?
All MCZ33903CD5EKR2 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 MCZ33903CD5EKR2 meets industry standards.
7.What is the process for return or replacement of MCZ33903CD5EKR2?
All MCZ33903CD5EKR2 units undergo pre-shipment inspection (PSI). If there is an issue with MCZ33903CD5EKR2, 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 MCZ33903CD5EKR2 part is unused and in its original packaging.
Return procedure for MCZ33903CD5EKR2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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