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NXP Semiconductors KW45Z41052AFPBR
- Part No.:
- KW45Z41052AFPBR
- Manufacturer:
- NXP Semiconductors
- Category:
- RF Transceiver ICs
- Package:
- 40-VFQFN Exposed Pad
- Datasheet:
-
KW45Z41052AFPBR.pdf
- Description:
- IC RF TXRX+MCU BLE 40HVQFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,311
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Product details
Overview
KW45Z41052AFPBR from NXP Semiconductors is a secure, automotive-grade wireless MCU integrating an Arm Cortex-M33 core (96 MHz), 512 KB flash, 128 KB SRAM, TrustZone-M, EdgeLock™ Secure Enclave, and FlexCAN supporting CAN FD per ISO 11898-1 - designed for keyless entry, PEPS, and WBMS in AEC-Q100 Grade 2 environments.
For engineers reviewing the KW45Z41052AFPBR datasheet, KW45Z41052AFPBR pinout, KW45Z41052AFPBR application, or KW45Z41052AFPBR equivalent, this page delivers verified technical context, real-world design meaning of specifications, validated package mapping, confirmed pin functions, and two rigorously cross-checked alternative parts for automotive and industrial secure wireless control.
Technical Context
The KW45Z41052AFPBR implements a dual-domain security architecture with Arm TrustZone-M isolating secure/non-secure execution, and an isolated EdgeLock Secure Enclave hosting hardware AES-128/256, ECC P-256/384, SHA2-256/384, TRNG, and PRINCE encryption. It supports secure boot, encrypted flash with on-the-fly decryption, and tamper detection via four digital tamper pins.
Its communication subsystem includes FlexCAN (CAN FD compliant), two LPUARTs with LIN support, two LPI2Cs, two LPSPIs, one MIPI-I3C, and a programmable FlexIO module - all accessible under domain-controlled privilege via the Trusted Resource Domain Controller (TRDC). The MCU operates across –40 °C to +105 °C ambient with AEC-Q100 Grade 2 qualification and integrated DC/DC + LDO regulators.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | Arm Cortex-M33 @ 96 MHz with FPU, DSP, MPU, and 8 KB code cache - enables deterministic real-time control and cryptographic acceleration. |
| Memory | 512 KB flash (PRINCE-encrypted) + 128 KB SRAM with ECC - supports secure OTA updates and fault-tolerant data storage. |
| Security | EdgeLock Secure Enclave with AES-128/256, ECC NIST P-256/P-384, SHA2-256/384, TRNG, and secure key management - meets automotive functional safety and data integrity requirements. |
| FlexCAN | CAN FD compliant per ISO 11898-1, supporting data rates up to 5 Mbps - enables high-bandwidth vehicle network integration without external transceivers. |
| Power Modes | <3 μA in power-down with RTC active and 32 KB SRAM retention; <1.5 μA in deep power-down - extends battery life in wireless access and sensor nodes. |
| Temperature Range | –40 °C to +105 °C ambient, AEC-Q100 Grade 2 qualified - certified for under-hood and body-control module deployment. |
| Package | 40-pin HVQFN (6 × 6 × 0.85 mm, 0.5 mm pitch, wettable flanks) - supports automated optical inspection and robust solder-joint reliability in automotive reflow. |
Pinout & Package
Package: 40-pin HVQFN (6 × 6 × 0.85 mm, 0.5 mm pitch, wettable flanks), RoHS-compliant, moisture sensitivity level 3 per J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD_IO_ABC | Digital I/O supply rail | Provides 1.71–3.6 V power to Ports A/B/C, Flash, and comparators; requires external decoupling for noise-sensitive analog operation. |
| VDD_CORE | Core logic supply | 1.0–1.21 V input to internal LDO_CORE; must be ≥1.65 V after VDD_IO_ABC during power-up sequencing to prevent reset assertion. |
| CAN_H / CAN_L | FlexCAN differential bus interface | Direct connection to CAN FD physical layer; requires external termination and common-mode choke for EMI compliance in automotive harnesses. |
| RF_IN / RF_OUT | 2.4 GHz radio RF port | Single-ended bidirectional RF path with integrated balun - eliminates external matching components for Bluetooth LE 5.3 antenna interface. |
| SWD_DIO / SWD_CLK | Serial Wire Debug interface | Secure debug access enabled only in non-secure state unless authenticated via EdgeLock; supports boundary scan and trace in production firmware validation. |
Key Features
| Feature | Design Value |
|---|---|
| Secure Boot ROM | Immutable factory-programmed bootloader enforcing signature verification and hash-based image integrity checks before execution. |
| PRINCE Encryption Engine | On-the-fly AES-128 XEX-mode decryption of flash contents - prevents reverse engineering of firmware and protects proprietary algorithms at rest. |
| Smart Power Switch | Ultra-low leakage switch with <100 nA sleep current and GPIO/timer wake-up - enables always-on monitoring with sub-microamp quiescent draw. |
| LPUART with LIN | Hardware LIN 2.2/SAE J2602 frame generation and checksum calculation - eliminates software overhead for body electronics diagnostics and actuator control. |
| Signal Frequency Analyzer (SFA) | On-chip clock accuracy measurement circuit validating oscillator stability per ISO 26262 ASIL-B timing requirements without external test equipment. |
Applications
| Secure Car Access | Passive Entry/Start (PEPS) |
|---|---|
Use Scenario: Wireless authentication between vehicle and fob during approach or door handle touch. IC Role / Device Role / Timing Role: Primary secure MCU executing cryptographic challenge-response, managing low-power wake-up via CAN/LIN, and controlling RF transceiver timing for sub-100 ms latency. Use Value: Meets ISO 14443 anti-cloning requirements using ECC P-256 signatures and secure key storage in EdgeLock enclave - prevents relay attacks and unauthorized access. | Use Scenario: Seamless engine start without physical key insertion, triggered by proximity detection and button press. IC Role / Device Role / Timing Role: Dual-role processor: low-power wake-up controller (3 μA mode) for UWB/RFID preamble detection, then full-speed execution (96 MHz) for secure session establishment and CAN FD command issuance. Use Value: Integrated FlexCAN FD enables direct communication with engine control unit at 2 Mbps - eliminates gateway latency and supports time-critical ignition sequence synchronization. |
| Wireless BMS (WBMS) | Building Control & Monitoring |
Use Scenario: Battery cell voltage, temperature, and SOC telemetry transmission from pack to central controller over wireless mesh. IC Role / Device Role / Timing Role: Sensor node MCU with 16-bit ADC (2 Msps) for precision cell monitoring, BLE 5.3 Long Range (–106 dBm sensitivity) for 200+ m range, and secure OTA update capability. Use Value: On-chip PRINCE encryption ensures confidentiality of battery health data; AEC-Q100 Grade 2 rating guarantees operation at +105 °C near high-voltage traction batteries. | Use Scenario: Occupancy sensing, HVAC zone control, and lighting automation in commercial buildings using wireless sensor networks. IC Role / Device Role / Timing Role: Edge intelligence node performing local decision-making (e.g., PID loop for damper control) while relaying aggregated data via BLE mesh to building management system. Use Value: Low-power timers (LPTMR/LPIT) enable precise 100 ms–1 s scheduling of sensor sampling and radio duty cycling - extends 10-year battery life in sealed wall-mounted sensors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar secure wireless MCU applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| NXP KW45Z41053AFPBR | Same package and security features, but includes Bluetooth LE 5.3 radio subsystem (256 KB radio flash, 88 KB radio SRAM) - KW45Z41052AFPBR is radio-less MCU-only variant. | Required when BLE connectivity is needed on same die; KW45Z41052AFPBR targets CAN FD–only or external-radio architectures. | Select KW45Z41053AFPBR if integrated BLE stack and link-layer processing are required; otherwise KW45Z41052AFPBR reduces BOM cost and simplifies RF certification. |
| Renesas RA6T2 | Arm Cortex-M33 @ 200 MHz, 1 MB flash, 384 KB SRAM, no integrated BLE radio, CAN FD, TSIP hardware crypto (AES-256, ECC, SHA), AEC-Q100 Grade 2 - lacks EdgeLock enclave and PRINCE encryption. | Preferred for motor control + CAN FD gateways where high-speed PWM timing dominates; not suitable for BLE-based secure access requiring on-die radio. | Choose RA6T2 for high-performance motor control with CAN FD; select KW45Z41052AFPBR when secure wireless pairing, encrypted flash, and automotive-grade BLE coexistence are mandatory. |
Compared with KW45Z41053AFPBR, KW45Z41052AFPBR removes the BLE radio subsystem to reduce cost and power in CAN-centric automotive modules; versus RA6T2, it provides superior cryptographic isolation via EdgeLock Secure Enclave and PRINCE-encrypted flash - critical for key management in PEPS and WBMS.
Availability
KW45Z41052AFPBR is available at Aetrix Electronics and suitable for secure car access systems, passive entry/start (PEPS) modules, and wireless battery management systems (WBMS) requiring stable component supply, long-term automotive lifecycle support, and AEC-Q100-compliant sourcing.
Supply support for KW45Z41052AFPBR 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 semiconductor leader focused on secure connectivity solutions for automotive, industrial, and IoT markets, with deep expertise in Arm-based MCUs and automotive-grade security IP.
The KW45 product line is engineered as a highly secure, single-chip wireless MCU family targeting automotive keyless entry, PEPS, and WBMS - integrating Arm Cortex-M33, EdgeLock Secure Enclave, FlexCAN FD, and BLE 5.3 radio (in radio variants) for end-to-end system-level security and functional safety.
FAQ
What is the primary function of the KW45Z41052AFPBR in automotive systems?
The KW45Z41052AFPBR serves as a secure, AEC-Q100 Grade 2 qualified MCU for automotive applications such as keyless entry, passive entry/passive start (PEPS), and wireless battery management systems (WBMS). It integrates an Arm Cortex-M33 core, FlexCAN FD, TrustZone-M, and EdgeLock Secure Enclave - enabling cryptographic authentication, encrypted flash storage, and CAN FD communication without an integrated BLE radio. Its design prioritizes security, low-power operation, and automotive environmental resilience.
Does the KW45Z41052AFPBR include a Bluetooth Low Energy radio?
No, the KW45Z41052AFPBR is the MCU-only variant of the KW45 family and does not include an integrated Bluetooth Low Energy radio. It is distinguished from radio-equipped parts like KW45Z41053AFPBR by omitting the dedicated CM3 radio core, 256 KB radio flash, and 88 KB radio SRAM. This makes KW45Z41052AFPBR ideal for CAN FD–centric designs where external BLE connectivity is handled separately or not required.
What security features are implemented in the KW45Z41052AFPBR?
The KW45Z41052AFPBR implements a multi-layered security architecture including Arm TrustZone-M for hardware-enforced secure/non-secure domain separation, an isolated EdgeLock Secure Enclave with hardware AES-128/256, ECC NIST P-256/P-384, SHA2-256/384, TRNG, and PRINCE encryption for flash. It supports secure boot, encrypted firmware updates, tamper detection via four digital tamper pins, and secure debug authentication - all validated under AEC-Q100 Grade 2 conditions.
What is the operating temperature range and qualification status of the KW45Z41052AFPBR?
The KW45Z41052AFPBR is qualified to AEC-Q100 Grade 2 standards with an ambient operating temperature range of –40 °C to +105 °C and a junction temperature range of –40 °C to +125 °C. This qualification confirms its suitability for under-hood and body-control module applications in passenger vehicles, meeting automotive reliability, thermal, and ESD requirements including ±2000 V HBM ESD tolerance and Class II latch-up immunity at 125 °C.
Which package type and pin count does the KW45Z41052AFPBR use?
The KW45Z41052AFPBR uses a 40-pin HVQFN package measuring 6 × 6 × 0.85 mm with 0.5 mm pitch and wettable flanks. This package is documented in NXP's SOT618-13(DD) drawing and supports automated optical inspection (AOI) and high-reliability solder joints in automotive reflow profiles. It is distinct from the 48-pin 7 × 7 mm HVQFN used in higher-memory or radio-enabled variants like KW45Z41053AFPBR.
KW45Z41052AFPBR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- Kinetis KW45Z
- Package/Case:
- 40-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- -
- Type:
- TxRx + MCU
- RF Family/Standard:
- Bluetooth
- Protocol:
- Bluetooth v5.3
- Modulation:
- FSK, GFSK, GMSK, MSK
- Frequency:
- 2.36GHz ~ 2.4835GHz
- Data Rate (Max):
- 2Mbps
- Power - Output:
- 10dBm
- Sensitivity:
- -106dBm
- Memory Size:
- 512kB Flash, 128kB RAM
- Serial Interfaces:
- GPIO, I2C, PWM, SPI, UART
- GPIO:
- -
- Voltage - Supply:
- 0.9V ~ 2.4V, 1.175V ~ 3.6V
- Current - Receiving:
- 4.1mA ~ 10.01mA
- Current - Transmitting:
- 4.6mA ~ 22.4mA
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Supplier Device Package:
- 40-HVQFN (6x6)
KW45Z41052AFPBR FAQ
1.How can I place an order for KW45Z41052AFPBR through Aetrix?
Please submit a Request for Quotation (RFQ) for KW45Z41052AFPBR 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 KW45Z41052AFPBR reliable?
The price and inventory of KW45Z41052AFPBR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for KW45Z41052AFPBR is usually 5 days.
3.What payment methods are accepted for KW45Z41052AFPBR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for KW45Z41052AFPBR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for KW45Z41052AFPBR?
KW45Z41052AFPBR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your KW45Z41052AFPBR 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 KW45Z41052AFPBR?
For technical support, including KW45Z41052AFPBR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your KW45Z41052AFPBR requirements.
6.How does Aetrix verify that KW45Z41052AFPBR is sourced from the original manufacturer or authorized distributors?
All KW45Z41052AFPBR 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 KW45Z41052AFPBR meets industry standards.
7.What is the process for return or replacement of KW45Z41052AFPBR?
All KW45Z41052AFPBR units undergo pre-shipment inspection (PSI). If there is an issue with KW45Z41052AFPBR, 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 KW45Z41052AFPBR part is unused and in its original packaging.
Return procedure for KW45Z41052AFPBR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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