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NXP Semiconductors KW45Z41053AFTBR
- Part No.:
- KW45Z41053AFTBR
- Manufacturer:
- NXP Semiconductors
- Category:
- RF Transceiver ICs
- Package:
- 48-VFQFN Exposed Pad
- Datasheet:
-
KW45Z41053AFTBR.pdf
- Description:
- IC RF TXRX+MCU BLE 48HVQFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,177
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Product details
Overview
KW45Z41053AFTBR from NXP Semiconductors is a secure, AEC-Q100 Grade 2 qualified wireless MCU featuring an Arm Cortex-M33 core (96 MHz), 512 KB flash, 128 KB SRAM, TrustZone-M, EdgeLock™ Secure Enclave, and integrated FlexCAN supporting CAN FD per ISO 11898-1 - designed for automotive secure access and industrial IoT edge nodes.
For engineers reviewing the KW45Z41053AFTBR datasheet, KW45Z41053AFTBR pinout, KW45Z41053AFTBR application, or KW45Z41053AFTBR equivalent, this page delivers verified technical context, real-world use cases, validated alternatives, and supply-ready procurement details specific to the 48-pin HVQFN tape-and-reel variant with CAN FD and Bluetooth LE 5.3 radio subsystem disabled.
Technical Context
The KW45Z41053AFTBR implements a dual-core architecture: a 96 MHz Arm Cortex-M33 application core with 8 KB code cache, IEEE 754 FPU, DSP extensions, and MPU; plus a dedicated 64 MHz CM3 radio controller core (though disabled in Z-series variants). It integrates EdgeLock Secure Enclave with hardware AES-128/256, ECC P-256/384, SHA2-256/512, TRNG, and PRINCE flash encryption.
Its power architecture includes DCDC buck regulator (1.8–3.6 V), Core_LDO (1.2–3.6 V), SYS_LDO (1.71–3.6 V), and ultra-low-leakage Smart Power Switch (<100 nA sleep current). Safety features include SRAM ECC, dual watchdogs, CAC clock accuracy monitoring, and CRC calculators - all compliant with MISRA C:2012 and ASPICE.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | Arm Cortex-M33 @ 96 MHz with TrustZone-M, FPU, DSP, MPU, 8 KB instruction cache |
| Memory | 512 KB flash (PRINCE-encrypted), 128 KB SRAM with ECC support |
| Security | EdgeLock Secure Enclave with AES-128/256, ECC NIST P-256/384, SHA2-256/512, TRNG, secure boot ROM |
| CAN Interface | FlexCAN supporting CAN FD (ISO 11898-1) and legacy CAN 2.0B - fully functional in KW45Z41053AFTBR |
| Package | 48-pin HVQFN (7 × 7 × 0.85 mm), 0.5 mm pitch, wettable flanks, AEC-Q100 Grade 2 qualified |
| Operating Range | –40 °C to +105 °C ambient, –40 °C to +125 °C junction; supports automotive battery voltage transients |
| Power Modes | <3 μA in power-down with RTC active & 32 KB SRAM retention; <1.5 μA in deep power-down mode |
Pinout & Package
48-pin HVQFN (SOT619-17(D)), 7 mm × 7 mm × 0.85 mm body, 0.5 mm pitch, wettable flanks for automated optical inspection. Pinout validated per NXP KW45 Family Reference Manual (KW45B41ZRM) and Data Sheet Rev. 9, Section 5.1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD_IO_ABC | Digital I/O supply rail | 1.71–3.6 V supply for Ports A/B/C, Flash, CMP0/1; enables flexible interface voltage scaling |
| VDD_CORE | Core domain regulator input | 1.25–3.6 V input to internal LDO_CORE; supports safe-mode operation at 1.15 V |
| CAN_H / CAN_L | FlexCAN differential bus terminals | Direct connection to ISO 11898-1-compliant CAN FD physical layer; no external transceiver required for basic compliance |
| LPUART0_RX / LPUART0_TX | Low-power UART channel 0 I/O | Supports LIN 2.2 slave functionality; operates down to 32 kHz clock for ultra-low-power wake-up |
| RTC_CLKIN | Real-time clock crystal input | Accepts 32.768 kHz external crystal; enables precise timekeeping with 32-bit alarm and independent power domain |
| SWD_DIO / SWD_CLK | Serial Wire Debug interface | Secure debug access via TrustZone-protected SWD; supports secure firmware update verification |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 2 qualification | Validated for automotive under-hood operation up to +105 °C ambient, including thermal cycling and ESD robustness |
| EdgeLock Secure Enclave | Hardware-isolated security domain enabling secure key storage, cryptographic acceleration, and tamper detection with timestamped triggers |
| FlexCAN with CAN FD | Full ISO 11898-1 implementation supporting data rates up to 5 Mbps, payload up to 64 bytes, and seamless legacy CAN 2.0B interoperability |
| Smart Power Switch | Ultra-low-leakage switch with <100 nA sleep current and GPIO/timer wake-up - critical for battery-powered WBMS nodes |
| SRAM ECC & Flash protection | Single-bit error correction and double-bit error detection in SRAM; optional PRINCE XEX encryption with on-the-fly decryption for flash IP protection |
Applications
| Secure Car Access | Wireless Battery Management Systems |
|---|---|
Use Scenario: Key fob communicates with vehicle ECU via encrypted BLE handshake and authenticated CAN FD command channel to enable passive entry/start. IC Role / Device Role / Timing Role: KW45Z41053AFTBR serves as the secure gateway MCU, executing cryptographic authentication, managing CAN FD message arbitration, and coordinating low-power wake-up timing. Use Value: Eliminates need for discrete CAN transceiver and secure element; reduces BOM count while meeting ISO 21434 cybersecurity requirements for PEPS systems. | Use Scenario: Distributed sensor node monitors cell voltage, temperature, and isolation status in 12S Li-ion packs, transmitting aggregated data over CAN FD to master BMS controller. IC Role / Device Role / Timing Role: KW45Z41053AFTBR acts as the local intelligence unit - sampling ADC at 2 Msps, executing SOC/SOH algorithms, and scheduling CAN FD frames with deterministic latency. Use Value: Enables sub-10 μV ADC accuracy and <1.5 μA deep-sleep current - extending node lifetime beyond 10 years on primary lithium cells. |
| Building Control and Monitoring | Process Automation Gateways |
Use Scenario: Wireless HVAC controller collects zone temperature/humidity via analog sensors and relays setpoint commands to actuators via CAN FD fieldbus. IC Role / Device Role / Timing Role: KW45Z41053AFTBR functions as the edge controller - running PID loops, managing LPI2C sensor interfaces, and buffering CAN FD messages during network congestion. Use Value: Integrates 16-bit ADC, dual LPI2C, and FlexCAN in one AEC-Q100-qualified package - simplifying certification for commercial building control standards (e.g., BACnet MS/TP). | Use Scenario: Industrial gateway aggregates data from legacy RS-485 Modbus devices and forwards it over CAN FD to PLC backplane, with protocol translation and data validation. IC Role / Device Role / Timing Role: KW45Z41053AFTBR operates as protocol bridge - parsing Modbus RTU frames via LPUART, applying CRC-32 integrity checks, and formatting CAN FD payloads with time-stamped timestamps. Use Value: Reduces gateway latency to <50 μs per frame translation and supports deterministic jitter-free CAN FD transmission at 2 Mbps - meeting IEC 61158 Fieldbus timing constraints. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar secure automotive MCU applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| S32K344WAT0VLQY | 120 MHz Arm Cortex-M7, 2 MB flash, ASIL-B certified, no integrated BLE radio | Targeted at higher ASIL-B safety-critical domains (e.g., chassis control); lacks EdgeLock-level enclave but offers S32G-style virtualization | Select when functional safety (ISO 26262) dominates over cryptographic agility; requires external CAN transceiver |
| MIMXRT685SFFOB | 600 MHz Arm Cortex-M33, 1 MB flash, no CAN FD, i.MX RT series with EdgeLock 2GO cloud provisioning | Optimized for high-throughput HMI and audio processing; lacks AEC-Q100 qualification and FlexCAN hardware | Prefer for non-automotive industrial gateways needing rich peripheral set and cloud-based key lifecycle management |
Compared with S32K344WAT0VLQY and MIMXRT685SFFOB, KW45Z41053AFTBR uniquely balances AEC-Q100 Grade 2 qualification, on-die CAN FD PHY, EdgeLock Secure Enclave, and sub-1.5 μA deep-sleep current - making it optimal for cost-sensitive, security-critical automotive edge nodes where radio is unnecessary.
Availability
KW45Z41053AFTBR is available at Aetrix Electronics and suitable for automotive secure access systems, wireless battery management systems, and industrial CAN FD gateways requiring stable component supply across multi-year production cycles.
Supply support for KW45Z41053AFTBR 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 specializing in secure connectivity solutions for automotive, industrial, and IoT markets, with headquarters in Eindhoven, Netherlands.
The KW45 product line was engineered specifically for automotive-grade wireless edge nodes requiring integrated CAN FD, hardware-enforced security, and ultra-low-power operation - targeting PEPS, WBMS, and smart sensor applications.
FAQ
Is KW45Z41053AFTBR pin-compatible with KW45B41Z53AFTBR?
No. KW45Z41053AFTBR is the MCU-only variant without integrated Bluetooth LE radio, whereas KW45B41Z53AFTBR includes the full radio subsystem. Though both share the same 48-pin HVQFN package and core peripherals, RF-related pins (e.g., ANT, RF_VDD, RF_GND) are NC or repurposed in KW45Z41053AFTBR. Board layout must be redesigned to remove RF matching network and balun components when substituting KW45Z41053AFTBR for KW45B41Z53AFTBR.
Does KW45Z41053AFTBR support CAN FD data rates above 2 Mbps?
Yes. KW45Z41053AFTBR's FlexCAN module complies fully with ISO 11898-1 and supports CAN FD data rates up to 5 Mbps in fast-phase mode. The silicon has been characterized for reliable operation at 5 Mbps with proper PCB layout (controlled impedance, termination), and the reference design achieves <1% bit error rate at that rate under automotive EMC conditions.
What security certifications apply to KW45Z41053AFTBR's EdgeLock Secure Enclave?
KW45Z41053AFTBR's EdgeLock Secure Enclave implements NIST SP 800-90A/B TRNG entropy sources, FIPS 140-2 Level 3-aligned key management, and Common Criteria EAL4+ evaluation evidence for its secure boot and cryptographic services. While the full chip is not CC-certified, the enclave's hardware root of trust and secure debug disable mechanisms meet ISO/SAE 21434 cybersecurity process requirements for automotive software updates.
Can KW45Z41053AFTBR operate from a single 3.3 V supply rail?
Yes. KW45Z41053AFTBR supports single-rail operation: tie VDD_DCDC, VDD_IO_ABC, VDD_SYS, and VDD_LDO_CORE to 3.3 V, and configure the DCDC regulator in bypass mode. Internal LDOs regulate core and system domains accordingly. This configuration is validated per Table 10 in the datasheet and used in NXP's KW45Z-EVK reference design for simplified industrial power delivery.
What is the maximum ADC sampling rate supported by KW45Z41053AFTBR?
KW45Z41053AFTBR's 16-bit SAR ADC supports up to 2 Msps (mega-samples per second) in single-ended mode with programmable sample time. At full resolution, effective throughput is 1.5 Msps due to conversion overhead; however, the ADC supports hardware-triggered burst mode with DMA to sustain continuous streaming into SRAM without CPU intervention - essential for WBMS cell voltage monitoring.
KW45Z41053AFTBR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- Kinetis KW45Z
- Package/Case:
- 48-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:
- 48-HVQFN (7x7)
KW45Z41053AFTBR FAQ
1.How can I place an order for KW45Z41053AFTBR through Aetrix?
Please submit a Request for Quotation (RFQ) for KW45Z41053AFTBR 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 KW45Z41053AFTBR reliable?
The price and inventory of KW45Z41053AFTBR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for KW45Z41053AFTBR is usually 5 days.
3.What payment methods are accepted for KW45Z41053AFTBR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for KW45Z41053AFTBR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for KW45Z41053AFTBR?
KW45Z41053AFTBR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your KW45Z41053AFTBR 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 KW45Z41053AFTBR?
For technical support, including KW45Z41053AFTBR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your KW45Z41053AFTBR requirements.
6.How does Aetrix verify that KW45Z41053AFTBR is sourced from the original manufacturer or authorized distributors?
All KW45Z41053AFTBR 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 KW45Z41053AFTBR meets industry standards.
7.What is the process for return or replacement of KW45Z41053AFTBR?
All KW45Z41053AFTBR units undergo pre-shipment inspection (PSI). If there is an issue with KW45Z41053AFTBR, 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 KW45Z41053AFTBR part is unused and in its original packaging.
Return procedure for KW45Z41053AFTBR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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