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NXP Semiconductors KW45B41Z82AFPBR
- Part No.:
- KW45B41Z82AFPBR
- Manufacturer:
- NXP Semiconductors
- Category:
- RF Transceiver ICs
- Package:
- 40-VFQFN Exposed Pad
- Datasheet:
-
KW45B41Z82AFPBR.pdf
- Description:
- IC RF TXRX+MCU BLE 40HVQFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,952
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Product details
Overview
KW45B41Z82AFPBR from NXP Semiconductors is a low-power, AEC-Q100 Grade 2 qualified wireless MCU integrating an Arm Cortex-M33 core (up to 96 MHz), Bluetooth LE 5.3 radio, and FlexCAN supporting CAN FD per ISO 11898-1. It features 1 MB flash, 128 KB SRAM, TrustZone-M security, EdgeLock Secure Enclave, and operates from –40 °C to +105 °C ambient. It targets secure automotive access systems and industrial wireless sensor networks.
For engineers reviewing the KW45B41Z82AFPBR datasheet, KW45B41Z82AFPBR pinout, KW45B41Z82AFPBR application, or KW45B41Z82AFPBR equivalent, key selection considerations include its 40-pin HVQFN wettable flank package, integrated CAN FD interface, Bluetooth LE 5.3 radio with –95 dBm 2 Mbps RX sensitivity, 1 MB encrypted flash, and automotive-grade safety features including ECC SRAM, dual watchdogs, and CAC clock monitoring.
Technical Context
The KW45B41Z82AFPBR implements a dual-core architecture: a 96 MHz Arm Cortex-M33 application core with TrustZone-M and IEEE 754 FPU, plus a dedicated 64 MHz CM3 radio controller core. Its security subsystem includes EdgeLock Secure Enclave with hardware AES-128/256, ECC P-256/384, SHA2-256/384, PRINCE encryption, TRNG, and secure boot ROM.
Power management integrates DCDC and LDO regulators supporting 1.8–3.6 V input, ultra-low leakage Smart Power Switch (<100 nA sleep current), and multiple power-down modes down to 300 nA. The analog subsystem includes a 16-bit SAR ADC (2 Msps), two comparators with 8-bit DACs, and precision voltage reference (1.0–2.1 V).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | Arm Cortex-M33 @ up to 96 MHz with TrustZone-M, FPU, DSP, MPU, and 8 KB code cache |
| Memory | 1 MB flash (PRINCE-encrypted) + 128 KB SRAM with ECC and parity error checking |
| Wireless | Bluetooth LE 5.3 radio: –95 dBm 2 Mbps RX sensitivity, +10 dBm TX output, 24 simultaneous connections |
| CAN Interface | FlexCAN supporting CAN FD per ISO 11898-1, with full CAN 2.0B compatibility |
| Security | EdgeLock Secure Enclave with AES-128/256, ECC NIST P-256/384, SHA2-256/384, TRNG, secure debug, and factory Root of Trust |
| Power | <5.3 mA active core current @ 96 MHz; <3 μA in power-down with RTC + 32 KB SRAM retention; <100 nA Smart Power Switch sleep current |
| 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), 0.5 mm pitch, wettable flanks - optimized for automotive reflow inspection and thermal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD_IO_ABC | Digital I/O supply rail | Supplies Ports A/B/C, Flash, and comparators; supports 1.71–3.6 V operation with programmable hysteresis |
| VDD_CORE | Core logic supply | Feeds Cortex-M33 core and digital peripherals via internal LDO; requires sequencing with VDD_IO_ABC ≥ 1.65 V when externally supplied |
| VDD_RF | RF analog supply | Powers 32 MHz RF oscillator and BLE radio analog blocks; specified 1.175–3.6 V range with low-noise regulation |
| PTA0 / PTA1 | GPIO / CAN_TX / CAN_RX | Primary FlexCAN differential pair pins; support CAN FD high-speed mode and require external termination |
| PTB0 / PTB1 | LPUART0_TX / LPUART0_RX | Low-power UART with LIN physical layer compliance; enable wake-up from deep sleep on frame detection |
| PTD0 | SWD_CLK | Serial Wire Debug clock input; shares pin with GPIO and requires external pull-down for debug entry |
| RTC_CLKIN | 32.768 kHz crystal input | Connects to external RTC crystal; enables real-time counter with independent power domain and 32-bit alarm |
Key Features
| Feature | Design Value |
|---|---|
| Secure Boot & Debug | Immutable boot ROM validates signed firmware images; debug access restricted by TrustZone domains and EdgeLock policy enforcement |
| On-the-fly Flash Decryption | PRINCE XEX block cipher decrypts encrypted flash contents during execution-no software overhead, no plaintext exposure in memory |
| FlexCAN with CAN FD | Full ISO 11898-1 implementation supporting data rates up to 5 Mbps, dynamic bit-rate switching, and payload sizes up to 64 bytes |
| Ultra-Low-Power Smart Switch | Integrated power switch draws <100 nA in sleep; enables GPIO- or timer-triggered wake-up without external PMIC |
| Hardware Cryptographic Acceleration | Dedicated engines for AES-GCM, ECDSA, ECDH, SHA2-384, and Poly1305-offloads CPU and ensures constant-time execution |
Applications
| Secure Car Access | Passive Entry/Start (PEPS) |
|---|---|
Use Scenario: Wireless authentication between vehicle and fob using encrypted challenge-response over BLE. IC Role / Device Role / Timing Role: KW45B41Z82AFPBR acts as the secure anchor node-running certified BLE stack, executing cryptographic operations in EdgeLock enclave, and managing CAN FD communication with body control module. Use Value: Meets ISO 21434 cybersecurity requirements with hardware-enforced isolation, tamper detection, and secure OTA updates-eliminating need for discrete secure element. | Use Scenario: Vehicle detects proximity of authenticated fob and unlocks doors or starts engine without button press. IC Role / Device Role / Timing Role: KW45B41Z82AFPBR serves as the low-power proximity sensing hub-using BLE advertising scan at 100 ms intervals, then triggering CAN FD handshake upon valid credential match. Use Value: Achieves sub-3 μA average current in standby with RTC wake-up and 32 KB SRAM retention-enabling multi-year battery life in fob applications. |
| Wireless Battery Management (WBMS) | Industrial Positioning/Localization |
Use Scenario: Cell voltage, temperature, and state-of-charge telemetry transmitted wirelessly from battery pack to BMS master. IC Role / Device Role / Timing Role: KW45B41Z82AFPBR functions as the slave node-acquiring 16-bit ADC samples at 2 Msps, encrypting data in EdgeLock enclave, and transmitting via BLE long-range mode (125 kbps, –106 dBm sensitivity). Use Value: Integrated PRINCE encryption and ECC RAM ensure data integrity and confidentiality without external crypto IC-reducing BOM cost and PCB area. | Use Scenario: Indoor asset tracking using BLE angle-of-arrival (AoA) or time-of-flight (ToF) with synchronized multi-node timing. IC Role / Device Role / Timing Role: KW45B41Z82AFPBR operates as synchronized edge node-leveraging 56-bit timestamp timer and SFA clock accuracy measurement for sub-microsecond time alignment across mesh nodes. Use Value: Hardware timestamping and signal frequency analyzer eliminate need for external timing reference-enabling cm-level indoor positioning accuracy. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar wireless MCU applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| NXP KW45B41Z83AFPBR | Same 40-pin HVQFN package and feature set, but includes integrated CAN FD controller (KW45B41Z82AFPBR does not) | Suitable for CAN FD gateway designs requiring both BLE and CAN FD on same die; KW45B41Z82AFPBR lacks CAN FD hardware | Select KW45B41Z83AFPBR only if CAN FD interface is required-KW45B41Z82AFPBR omits FlexCAN entirely per ordering table |
| Infineon CYW20829-B1KUB2 | BLE 5.3 MCU with 1 MB flash, 384 KB SRAM, but no CAN interface, no AEC-Q100 qualification, and no EdgeLock-class secure enclave | Targeted at consumer IoT and industrial non-automotive applications where automotive safety certification and hardware root of trust are not mandatory | Choose CYW20829-B1KUB2 for cost-sensitive, non-automotive BLE endpoints; KW45B41Z82AFPBR is required for AEC-Q100 Grade 2 and ISO 21434 compliance |
Compared with KW45B41Z83AFPBR, KW45B41Z82AFPBR removes FlexCAN hardware to reduce cost and power-making it suitable for BLE-only automotive sensors. Versus CYW20829-B1KUB2, KW45B41Z82AFPBR adds AEC-Q100 qualification, EdgeLock Secure Enclave, and automotive-grade safety mechanisms at the expense of higher BOM cost and larger footprint.
Availability
KW45B41Z82AFPBR is available at Aetrix Electronics and suitable for automotive secure access systems, industrial wireless sensor networks, and battery management telemetry requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for KW45B41Z82AFPBR 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 headquartered in Eindhoven, Netherlands, specializing in secure connectivity solutions for automotive, industrial, and IoT markets.
The KW45 product family is designed specifically for automotive and industrial wireless applications demanding high security, functional safety, and low-power operation-integrating BLE 5.3, CAN FD, and EdgeLock Secure Enclave into a single AEC-Q100 qualified SoC.
FAQ
Does KW45B41Z82AFPBR include a CAN FD controller?
No, KW45B41Z82AFPBR does not include FlexCAN hardware. Per NXP's ordering information table, part numbers ending in "Z82" (like KW45B41Z82AFPBR) are explicitly designated as non-CAN variants, whereas "Z83" suffixes indicate CAN FD support. This distinction is fixed at mask level and cannot be enabled via firmware.
What is the maximum operating temperature for KW45B41Z82AFPBR?
KW45B41Z82AFPBR is AEC-Q100 Grade 2 qualified with an ambient operating temperature range of –40 °C to +105 °C. Its junction temperature rating extends to +125 °C, and thermal design must maintain junction temperature within this limit under worst-case power dissipation conditions.
How is flash encryption implemented in KW45B41Z82AFPBR?
KW45B41Z82AFPBR uses the PRINCE XEX block cipher mode for on-the-fly flash decryption. Encrypted flash contents are decrypted in hardware during instruction fetch or data read-no CPU involvement, no plaintext exposure in SRAM, and no performance penalty. Key management is handled exclusively within the EdgeLock Secure Enclave.
Can KW45B41Z82AFPBR support Bluetooth LE long-range mode?
Yes, KW45B41Z82AFPBR supports Bluetooth LE long-range mode with measured receive sensitivities of –106 dBm at 125 kbps and –102 dBm at 500 kbps. This enables extended coverage in industrial environments and reduces infrastructure node density requirements for large-scale sensor deployments.
What debug interface does KW45B41Z82AFPBR use?
KW45B41Z82AFPBR uses Serial Wire Debug (SWD) with SWD_CLK and SWD_DIO pins. Debug access is gated by TrustZone-M and EdgeLock Secure Enclave policies-requiring authenticated debug sessions and enforcing secure/non-secure domain separation during development and field updates.
KW45B41Z82AFPBR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- Kinetis KW45B
- Package/Case:
- 40-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- -
- Type:
- TxRx + MCU
- RF Family/Standard:
- Bluetooth, General ISM > 1GHz
- Protocol:
- Bluetooth v5.3
- Modulation:
- FSK, GFSK, GMSK, MSK
- Frequency:
- 2.36GHz ~ 2.48GHz
- Data Rate (Max):
- 2Mbps
- Power - Output:
- 10dBm
- Sensitivity:
- -106dBm
- Memory Size:
- 1MB Flash, 128kB RAM
- Serial Interfaces:
- I2C, PWM, SPI, UART
- GPIO:
- -
- Voltage - Supply:
- 1.8V ~ 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)
KW45B41Z82AFPBR FAQ
1.How can I place an order for KW45B41Z82AFPBR through Aetrix?
Please submit a Request for Quotation (RFQ) for KW45B41Z82AFPBR 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 KW45B41Z82AFPBR reliable?
The price and inventory of KW45B41Z82AFPBR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for KW45B41Z82AFPBR is usually 5 days.
3.What payment methods are accepted for KW45B41Z82AFPBR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for KW45B41Z82AFPBR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for KW45B41Z82AFPBR?
KW45B41Z82AFPBR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your KW45B41Z82AFPBR 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 KW45B41Z82AFPBR?
For technical support, including KW45B41Z82AFPBR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your KW45B41Z82AFPBR requirements.
6.How does Aetrix verify that KW45B41Z82AFPBR is sourced from the original manufacturer or authorized distributors?
All KW45B41Z82AFPBR 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 KW45B41Z82AFPBR meets industry standards.
7.What is the process for return or replacement of KW45B41Z82AFPBR?
All KW45B41Z82AFPBR units undergo pre-shipment inspection (PSI). If there is an issue with KW45B41Z82AFPBR, 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 KW45B41Z82AFPBR part is unused and in its original packaging.
Return procedure for KW45B41Z82AFPBR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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