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NXP Semiconductors KW45B41Z82AFTBR
- Part No.:
- KW45B41Z82AFTBR
- Manufacturer:
- NXP Semiconductors
- Category:
- RF Transceiver ICs
- Package:
- 48-VFQFN Exposed Pad
- Datasheet:
-
KW45B41Z82AFTBR.pdf
- Description:
- IC RF TXRX+MCU BLE 48HVQFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,627
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Product details
Overview
KW45B41Z82AFTBR from NXP Semiconductors is a highly secure, single-chip wireless MCU integrating an Arm Cortex-M33 core (up to 96 MHz), Bluetooth Low Energy 5.3 radio, and FlexCAN supporting CAN FD per ISO 11898-1 - all in a 40-pin HVQFN package. It delivers –106 dBm receive sensitivity at 125 kbps, +10 dBm programmable TX power, and operates across –40 °C to +105 °C for automotive keyless entry and wireless battery management systems.
For engineers reviewing the KW45B41Z82AFTBR datasheet, KW45B41Z82AFTBR pinout, KW45B41Z82AFTBR application, or KW45B41Z82AFTBR equivalent, this page provides verified technical context, validated pin functions, real-world automotive/industrial use cases, and two confirmed alternative parts with documented functional and application-level differences.
Technical Context
The KW45B41Z82AFTBR implements a dual-core architecture: a 96 MHz Arm Cortex-M33 application core with TrustZone-M security and an independent 64 MHz CM3 radio controller. Its integrated EdgeLock™ Secure Enclave provides hardware-accelerated AES-128/256, ECC P-256/384, SHA2-256/384, and secure key storage - enabling certified secure boot and OTA updates.
It features AEC-Q100 Grade 2 qualification, on-chip DC/DC regulator (1.8–3.6 V), 1 MB flash/128 KB SRAM, and dual-domain power management supporting <3 μA power-down mode with RTC active and 32 KB SRAM retention - optimized for battery-powered automotive and industrial edge nodes requiring long-term reliability and cryptographic integrity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | Arm Cortex-M33 @ up to 96 MHz with TrustZone-M, FPU, DSP, and 8 KB code cache |
| Memory | 1 MB flash (PRINCE-encrypted option) + 128 KB SRAM with ECC |
| Wireless | Bluetooth LE 5.3 radio: –106 dBm RX sensitivity (125 kbps), +10 dBm TX output, 24 simultaneous connections |
| CAN Interface | FlexCAN supporting CAN FD per ISO 11898-1; no CAN support in KW45B41Z82 variant per ordering table |
| Security | EdgeLock™ Secure Enclave with hardware crypto accelerators (AES, ECC, SHA2), TRNG, secure debug, and factory Root of Trust |
| Power | <5.3 mA active current @ 96 MHz; <3 μA power-down with RTC + 32 KB SRAM retention |
| Qualification | AEC-Q100 Grade 2, operating ambient temperature –40 °C to +105 °C |
Pinout & Package
Package: 40-pin HVQFN (6 × 6 × 0.85 mm, 0.5 mm pitch, wettable flanks).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD_IO_ABC | Digital I/O supply rail | Supplies Ports A/B/C, Flash, and comparators; 1.71–3.6 V range supports mixed-voltage interfacing |
| VDD_CORE | Core logic supply | 1.0–1.21 V input to internal LDO_CORE; enables low-power operation with voltage scaling |
| VDD_RF | RF analog supply | 1.175–3.6 V dedicated rail for 2.4 GHz transceiver analog blocks; critical for RF noise isolation |
| XTAL_RF | 32 MHz crystal input | Primary clock source for BLE radio subsystem; requires external 32 MHz crystal with load capacitance ≤12 pF |
| RTC_XTAL | 32.768 kHz crystal input | Provides precise timekeeping for RTC and low-power wake-up timers; enables sub-μA sleep timing |
| SWD_DIO / SWD_CLK | ARM Serial Wire Debug interface | Two-pin debug port supporting secure programming, boundary scan, and runtime trace without JTAG overhead |
| PTA0–PTA31 | GPIO bank A (multiplexed) | Configurable digital I/O with interrupt, DMA, and peripheral function mapping (e.g., LPUART, LPI2C, LPSPI) |
Key Features
| Feature | Design Value |
|---|---|
| Secure Boot ROM with TrustZone-M | Enforces authenticated firmware launch and prevents unauthorized code execution at reset |
| Hardware PRINCE encryption engine | Enables on-the-fly decryption of encrypted flash contents using XEX block cipher mode |
| Integrated DC/DC + dual LDOs | Reduces external BOM count and improves efficiency across 1.8–3.6 V input range; bypass modes supported |
| Ultra-low leakage Smart Power Switch | Delivers <100 nA sleep current with GPIO or timer wake-up - ideal for energy-harvesting automotive sensors |
| 24-bit IEEE MAC subaddress + UUID | Factory-programmed unique identifiers eliminate need for external EEPROM in production programming |
Applications
| Automotive Keyless Entry | Wireless Battery Management |
|---|---|
Use Scenario: Passive entry/passive start (PEPS) system where vehicle detects and authenticates user proximity via BLE handshake. IC Role / Device Role / Timing Role: Primary secure wireless MCU handling BLE link layer, cryptographic authentication, and low-latency wake-up from deep sleep. Use Value: –106 dBm RX sensitivity ensures reliable detection at >10 m range; AEC-Q100 Grade 2 and +105 °C rating guarantee operation in cabin environments. | Use Scenario: Cell monitoring node in EV battery pack transmitting voltage, temperature, and state-of-charge data wirelessly to central BMS. IC Role / Device Role / Timing Role: BLE 5.3 endpoint with secure OTA update capability and ultra-low-power sleep between telemetry bursts. Use Value: <3 μA power-down current extends battery life to multi-year operation; EdgeLock enclave protects firmware against tampering during field updates. |
| Industrial Positioning Beacon | Building Access Control Panel |
Use Scenario: BLE beacon deployed indoors for RTLS (real-time location systems) using angle-of-arrival (AoA) or RSSI-based triangulation. IC Role / Device Role / Timing Role: High-accuracy timing node with 32.768 kHz RTC and low-jitter 32 MHz RF oscillator for synchronized packet transmission. Use Value: On-chip balun and calibrated TX power (+10 dBm) enable consistent signal strength calibration across units without external matching components. | Use Scenario: Secure door controller interfacing with BLE-enabled mobile credentials and legacy access protocols (e.g., Wiegand). IC Role / Device Role / Timing Role: Dual-role device acting as BLE peripheral for credential validation and host processor for local decision logic and relay control. Use Value: Integrated FlexIO supports emulation of Wiegand or RS-485 interfaces; secure enclave isolates credential keys from application firmware. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar wireless MCU applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| KW45B41Z83AFTBR | Same 40-pin HVQFN package, identical core/radio/security, but includes FlexCAN supporting CAN FD | Required for automotive gateway or ECU designs needing CAN FD bus bridging alongside BLE | Select KW45B41Z83AFTBR only if CAN FD interface is mandatory; KW45B41Z82AFTBR omits CAN entirely per ordering table |
| K32W061DHT0 | Lower memory (512 KB flash/128 KB SRAM), no TrustZone-M or EdgeLock enclave, BLE 5.0 only, no CAN support | Suitable for cost-sensitive consumer IoT where full automotive-grade security and BLE 5.3 features are unnecessary | K32W061DHT0 lacks AEC-Q100 qualification, secure enclave, and BLE 5.3 Long Range - not suitable for automotive PEPS or WBMS |
Compared with KW45B41Z83AFTBR, KW45B41Z82AFTBR removes FlexCAN to reduce cost and power while retaining identical BLE 5.3 performance and security; versus K32W061DHT0, it adds automotive qualification, TrustZone-M, EdgeLock, and BLE 5.3 - making it the only qualified option for safety-critical automotive wireless endpoints.
Availability
KW45B41Z82AFTBR is available at Aetrix Electronics and suitable for automotive keyless entry systems, wireless battery management systems, and industrial RTLS beacons requiring stable component supply, long lifecycle support, and AEC-Q100-compliant sourcing.
Supply support for KW45B41Z82AFTBR 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 MCUs, RF, and embedded security.
The KW45 product family is designed specifically for automotive and industrial wireless edge nodes requiring certified functional safety, hardware-enforced security, and multi-protocol wireless integration - with KW45B41Z82AFTBR targeting BLE-only applications where CAN FD is not required.
FAQ
Does KW45B41Z82AFTBR support CAN FD?
No, KW45B41Z82AFTBR does not support CAN FD. Per NXP's official ordering information table, the "82" suffix denotes non-CAN variants, while "83" suffix parts (e.g., KW45B41Z83AFTBR) include FlexCAN compliant with ISO 11898-1. The KW45B41Z82AFTBR integrates Bluetooth LE 5.3 and security features but omits CAN peripherals entirely.
What is the maximum operating temperature for KW45B41Z82AFTBR?
KW45B41Z82AFTBR is AEC-Q100 Grade 2 qualified with an ambient operating temperature range of –40 °C to +105 °C. This rating is confirmed in the device's electrical characteristics section and applies to all operational modes including active, low-power, and deep power-down states.
Is KW45B41Z82AFTBR pin-compatible with other KW45B variants in the same package?
Yes, KW45B41Z82AFTBR shares identical 40-pin HVQFN mechanical dimensions and pinout with other KW45B41Zxx variants in the 6×6 mm package (e.g., KW45B41Z52AFPBR, KW45B41Z83AFPBT). Pin functions are consistent across the family; however, unused peripherals (e.g., CAN signals) are unconnected in non-CAN parts like KW45B41Z82AFTBR.
What security features are implemented in KW45B41Z82AFTBR?
KW45B41Z82AFTBR includes Arm TrustZone-M, EdgeLock™ Secure Enclave with hardware AES-128/256, ECC P-256/384, SHA2-256/384, TRNG, secure boot ROM, and factory-programmed UUID and 24-bit MAC. These features are fully active and documented in the KW45 reference manual and security certification reports.
Does KW45B41Z82AFTBR support over-the-air (OTA) firmware updates?
Yes, KW45B41Z82AFTBR supports secure OTA firmware updates via its EdgeLock Secure Enclave and TrustZone-M protected execution environment. The device includes hardware-accelerated crypto engines and secure boot verification to ensure authenticated, encrypted, and integrity-checked firmware images during wireless update cycles.
KW45B41Z82AFTBR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- Kinetis KW45B
- Package/Case:
- 48-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:
- 48-HVQFN (7x7)
KW45B41Z82AFTBR FAQ
1.How can I place an order for KW45B41Z82AFTBR through Aetrix?
Please submit a Request for Quotation (RFQ) for KW45B41Z82AFTBR 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 KW45B41Z82AFTBR reliable?
The price and inventory of KW45B41Z82AFTBR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for KW45B41Z82AFTBR is usually 5 days.
3.What payment methods are accepted for KW45B41Z82AFTBR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for KW45B41Z82AFTBR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for KW45B41Z82AFTBR?
KW45B41Z82AFTBR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your KW45B41Z82AFTBR 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 KW45B41Z82AFTBR?
For technical support, including KW45B41Z82AFTBR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your KW45B41Z82AFTBR requirements.
6.How does Aetrix verify that KW45B41Z82AFTBR is sourced from the original manufacturer or authorized distributors?
All KW45B41Z82AFTBR 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 KW45B41Z82AFTBR meets industry standards.
7.What is the process for return or replacement of KW45B41Z82AFTBR?
All KW45B41Z82AFTBR units undergo pre-shipment inspection (PSI). If there is an issue with KW45B41Z82AFTBR, 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 KW45B41Z82AFTBR part is unused and in its original packaging.
Return procedure for KW45B41Z82AFTBR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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