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NXP Semiconductors KW45Z41082AFPBT
- Part No.:
- KW45Z41082AFPBT
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 40-VFQFN Exposed Pad
- Datasheet:
-
KW45Z41082AFPBT.pdf
- Description:
- K4W1 HVQFN40
- Quantity:
- Payment:
- Shipping:
Inventory:4,116
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Product details
Overview
KW45Z41082AFPBT from NXP Semiconductors is a secure, automotive-grade wireless MCU integrating an Arm Cortex-M33 core (96 MHz), 1 MB flash, 128 KB SRAM, TrustZone-M, EdgeLock™ Secure Enclave, and FlexCAN supporting CAN FD per ISO 11898-1 - deployed in Passive Entry/Passive Start (PEPS) and Wireless Battery Management Systems (WBMS).
For engineers reviewing the KW45Z41082AFPBT datasheet, KW45Z41082AFPBT pinout, KW45Z41082AFPBT application, or KW45Z41082AFPBT equivalent, key selection criteria include AEC-Q100 Grade 2 qualification, -40 °C to +105 °C ambient operation, on-the-fly PRINCE encryption, dual-domain power management (DCDC + LDOs), and verified CAN FD + BLE 5.3 coexistence in a 6×6 mm HVQFN40 wettable flank package.
Technical Context
The KW45Z41082AFPBT implements a dual-core architecture: the main Cortex-M33 executes application firmware with TrustZone-M isolation, while a dedicated CM3 radio core handles BLE 5.3 link-layer processing. It integrates EdgeLock Secure Enclave for hardware-accelerated AES-128/256, ECC P-256/384, SHA2-256/384, and secure key lifecycle management.
Its FlexCAN controller supports full CAN FD data rates up to 5 Mbps with ISO 11898-1 compliance, and the RF subsystem includes integrated balun, programmable TX output (+10 dBm max), and -106 dBm sensitivity at 125 kbps Long Range mode - all operating within the same die as the MCU and security subsystem.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm Cortex-M33 @ 96 MHz with TrustZone-M, FPU, DSP, MPU, and 8 KB code cache |
| Memory | 1 MB flash (PRINCE-encrypted optional), 128 KB SRAM with ECC and parity protection |
| Wireless | Bluetooth LE 5.3 radio: -106 dBm RX sensitivity (125 kbps), +10 dBm TX, 24 concurrent connections |
| CAN Interface | FlexCAN supporting CAN FD up to 5 Mbps, compliant with ISO 11898-1 |
| Security | EdgeLock Secure Enclave with hardware crypto accelerators, TRNG, secure boot ROM, and eFuse-based root of trust |
| Power | <5.3 mA active current @ 96 MHz; <3 μA power-down with RTC + 32 KB SRAM retention; 300 nA deep sleep with GPIO/timer wake |
| Qualification | AEC-Q100 Grade 2 (-40 °C to +105 °C ambient), MISRA C:2012 and ASPICE compliant |
Pinout & Package
Package: 40-pin HVQFN (6 × 6 × 0.85 mm), pitch 0.5 mm, wettable flanks - optimized for automotive reflow inspection and thermal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD_CORE | Core domain supply | 1.25–3.6 V input to LDO_CORE regulator; powers Cortex-M33 and digital logic |
| VDD_SYS | System domain supply | 1.8–2.25 V input to LDO_SYS; powers EFUSE, SRTC, FRO oscillators |
| VDD_IO_ABC | I/O bank A/B/C supply | 1.71–3.6 V rail; powers GPIO, ADC, DAC, CMP, Flash, and Port A/B/C |
| VDD_RF | RF analog supply | 1.175–3.6 V; powers 32 MHz RF oscillator and BLE transceiver analog blocks |
| CAN_H / CAN_L | FlexCAN differential bus | Direct connection to external CAN transceiver; supports CAN FD signaling up to 5 Mbps |
| PTA0 / PTA1 | UART0 TX/RX | LPUART0 pins with LIN physical layer support; configurable for bootloader or diagnostics |
| PTB0 / PTB1 | FlexCAN TX/RX | Dedicated CAN FD transmit/receive pins; require external termination and common-mode choke |
| PTD0 | SWD_CLK | Serial Wire Debug clock input; used for programming and real-time debug via SWD interface |
Key Features
| Feature | Design Value |
|---|---|
| Secure Boot with Root of Trust | Factory-programmed UUID and IEEE MAC; immutable boot ROM validates signed images before execution |
| On-the-Fly PRINCE Encryption | Hardware-accelerated AES-128 XEX mode decrypts flash contents during read access - no software overhead or latency penalty |
| Dual-Mode Power Regulation | Integrated DCDC buck converter (1.8–3.6 V) + bypass-capable LDO_CORE/LDO_SYS enable flexible power architecture for low-noise or high-efficiency operation |
| Smart Power Switch | Ultra-low-leakage switch with <100 nA sleep current; enables fast wake from GPIO or internal timer without external PMIC |
| Automotive-Ready Peripherals | Two LPUARTs with LIN support, two LPI2Cs, two LPSPIs, MIPI-I3C, and FlexIO - all qualified for AEC-Q100 Grade 2 operation |
Applications
| Secure Car Access | Passive Entry/Start (PEPS) |
|---|---|
Use Scenario: Key fob communicates with vehicle ECU via encrypted BLE 5.3 handshake to authenticate and unlock doors without physical button press. IC Role / Device Role / Timing Role: KW45Z41082AFPBT serves as the secure BLE endpoint with EdgeLock enclave managing cryptographic keys and session establishment. Use Value: Enables sub-100 ms authentication latency, anti-relay protection via distance bounding, and tamper-resistant key storage - meeting OEM PEPS security requirements. | Use Scenario: Vehicle detects proximity of authenticated fob and automatically unlocks doors and enables engine start upon entering cabin. IC Role / Device Role / Timing Role: KW45Z41082AFPBT acts as the central secure MCU coordinating BLE ranging, CAN FD command issuance to body control module, and low-power wake-on-radar triggers. Use Value: Integrates BLE 5.3 long-range RX (-106 dBm) and CAN FD (5 Mbps) in one die - eliminating inter-chip timing skew and reducing BOM count vs. discrete solutions. |
| Wireless BMS Nodes | Industrial Asset Tracking |
Use Scenario: Cell voltage and temperature sensors in EV battery packs communicate wirelessly to master BMS controller using time-synchronized BLE mesh. IC Role / Device Role / Timing Role: KW45Z41082AFPBT functions as a certified AEC-Q100 node MCU with secure OTA update capability and precise RTC for timestamped telemetry. Use Value: Supports encrypted firmware updates over BLE, stores calibrated sensor offsets in protected flash, and maintains <±2 ppm timing accuracy via 32.768 kHz crystal for synchronized sampling. | Use Scenario: Mobile industrial equipment (e.g., forklifts, AGVs) reports location, status, and fault codes via BLE to fleet management gateway, then forwards critical alerts via CAN FD to central PLC. IC Role / Device Role / Timing Role: KW45Z41082AFPBT operates as dual-protocol edge node - BLE for local commissioning and diagnostics, CAN FD for deterministic control messaging. Use Value: Eliminates need for separate BLE and CAN controllers; leverages shared memory and DMA to reduce latency between wireless telemetry and wired control commands. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar secure wireless MCU applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| KW45Z41083AFPBT | Same package and pinout; adds 1 MB flash (vs. 1 MB in KW45Z41082AFPBT - identical), but includes CAN FD support enabled (KW45Z41082AFPBT has CAN FD disabled per ordering code "82") | Required where CAN FD communication is mandatory (e.g., OEM diagnostic protocols); not suitable if CAN is unused or handled externally | Select KW45Z41083AFPBT only when CAN FD functionality is needed - KW45Z41082AFPBT omits CAN FD hardware enablement per mask set |
| K32W061DAFT0V | BLE-only MCU (no CAN FD), 640 KB flash, 128 KB SRAM, AEC-Q100 Grade 2, same 6×6 HVQFN40 package - lacks FlexCAN, PRINCE encryption, and EdgeLock Secure Enclave | Suitable for BLE-centric applications without wired vehicle bus integration (e.g., tire pressure monitors, smart keys without PEPS) | Choose K32W061DAFT0V for cost-sensitive BLE endpoints where CAN FD and hardware security beyond TrustZone-M are unnecessary |
Compared with KW45Z41082AFPBT, KW45Z41083AFPBT enables CAN FD at no pinout or layout change but requires firmware validation for CAN stack integration, while K32W061DAFT0V reduces cost and complexity for pure BLE use cases but forfeits automotive bus interoperability and advanced enclave-based security.
Availability
KW45Z41082AFPBT is available at Aetrix Electronics and suitable for automotive secure access systems, wireless battery management nodes, and industrial asset tracking platforms requiring stable component supply across extended temperature and long product lifecycles.
Supply support for KW45Z41082AFPBT 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 company specializing in secure connectivity solutions for automotive, industrial, and IoT markets, with leadership in MCUs, radar, and trusted execution environments.
The KW45 product line delivers highly secure, dual-protocol wireless MCUs targeting automotive PEPS, WBMS, and industrial control - combining BLE 5.3, CAN FD, Arm TrustZone-M, and EdgeLock Secure Enclave in a single AEC-Q100 Grade 2 package.
FAQ
Does KW45Z41082AFPBT support CAN FD functionality?
No, KW45Z41082AFPBT does not support CAN FD. Its part number suffix "82" indicates the non-CAN FD variant per NXP's ordering matrix. The "83" suffix (e.g., KW45Z41083AFPBT) denotes CAN FD-enabled versions. KW45Z41082AFPBT retains FlexCAN peripheral registers but lacks functional CAN FD protocol support in silicon and firmware libraries.
What security features are implemented in KW45Z41082AFPBT's EdgeLock Secure Enclave?
KW45Z41082AFPBT integrates EdgeLock Secure Enclave with hardware accelerators for AES-128/192/256, ECC NIST P-256/384, SHA2-256/384, ECDSA, Ed25519, and PRINCE on-the-fly flash decryption. It provides secure key generation, storage in eFuses, and tamper detection via four dedicated digital tamper pins with timestamping.
Is KW45Z41082AFPBT qualified for automotive use?
Yes, KW45Z41082AFPBT is AEC-Q100 Grade 2 qualified, rated for -40 °C to +105 °C ambient operation, and compliant with MISRA C:2012 and Automotive SPICE (ASPICE) development processes - making it suitable for under-hood and cabin-mounted automotive modules including PEPS and WBMS.
What is the maximum BLE transmit power supported by KW45Z41082AFPBT?
KW45Z41082AFPBT supports programmable BLE transmit output power up to +10 dBm. Measured typical current draw is 4.6 mA at 0 dBm and 18.7 mA at +10 dBm (DC-DC buck mode, 3.3 V supply), enabling robust link budgets for long-range automotive key fob applications.
Does KW45Z41082AFPBT include hardware support for secure over-the-air (OTA) updates?
Yes, KW45Z41082AFPBT supports secure OTA firmware updates via its EdgeLock Secure Enclave, which validates digital signatures (ECDSA/Ed25519) and decrypts encrypted image payloads using hardware-accelerated AES before writing to flash - ensuring authenticity, confidentiality, and integrity of field updates.
KW45Z41082AFPBT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 40-VFQFN Exposed Pad
- Series:
- Kinetis KW45Z
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- -
- Core Processor:
- ARM® Cortex®-M33
- Core Size:
- 32-Bit
- Speed:
- 96MHz
- Connectivity:
- CANbus, HMI, I2C, SPI, UART/USART
- Peripherals:
- DMA, PWM, WDT
- Number of I/O:
- 22
- Program Memory Size:
- 1MB (1M x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 128K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.8V ~ 3.6V
- Data Converters:
- A/D 14x16b SAR
- Oscillator Type:
- -
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
KW45Z41082AFPBT FAQ
1.How can I place an order for KW45Z41082AFPBT through Aetrix?
Please submit a Request for Quotation (RFQ) for KW45Z41082AFPBT 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 KW45Z41082AFPBT reliable?
The price and inventory of KW45Z41082AFPBT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for KW45Z41082AFPBT is usually 5 days.
3.What payment methods are accepted for KW45Z41082AFPBT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for KW45Z41082AFPBT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for KW45Z41082AFPBT?
KW45Z41082AFPBT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your KW45Z41082AFPBT 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 KW45Z41082AFPBT?
For technical support, including KW45Z41082AFPBT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your KW45Z41082AFPBT requirements.
6.How does Aetrix verify that KW45Z41082AFPBT is sourced from the original manufacturer or authorized distributors?
All KW45Z41082AFPBT 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 KW45Z41082AFPBT meets industry standards.
7.What is the process for return or replacement of KW45Z41082AFPBT?
All KW45Z41082AFPBT units undergo pre-shipment inspection (PSI). If there is an issue with KW45Z41082AFPBT, 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 KW45Z41082AFPBT part is unused and in its original packaging.
Return procedure for KW45Z41082AFPBT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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