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NXP Semiconductors KW45B41Z82AFTBT
- Part No.:
- KW45B41Z82AFTBT
- Manufacturer:
- NXP Semiconductors
- Category:
- RF Transceiver ICs
- Package:
- 48-VFQFN Exposed Pad
- Datasheet:
-
KW45B41Z82AFTBT.pdf
- Description:
- IC RF TXRX+MCU BLE 48HVQFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,113
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Product details
Overview
KW45B41Z82AFTBT from NXP Semiconductors is a low-power, AEC-Q100 Grade 2 qualified wireless MCU integrating an Arm Cortex-M33 core (up to 96 MHz), 1 MB flash, 128 KB SRAM, Bluetooth LE 5.3 radio, and FlexCAN interface - but excludes CAN FD support per ordering table. It targets secure automotive access systems and industrial IoT edge nodes requiring robust security and dual-protocol connectivity.
For engineers reviewing the KW45B41Z82AFTBT datasheet, KW45B41Z82AFTBT pinout, KW45B41Z82AFTBT application, or KW45B41Z82AFTBT equivalent, key selection criteria include its 1 MB/128 KB memory configuration, absence of CAN FD (vs. Z83 variants), 48-pin HVQFN wettable flank package, –40 °C to +105 °C operating range, and EdgeLock Secure Enclave with PRINCE encryption.
Technical Context
The KW45B41Z82AFTBT implements a dual-core architecture: a 96 MHz Arm Cortex-M33 application core with TrustZone-M, IEEE 754 FPU, DSP extensions, and 8 KB code cache; plus a dedicated 64 MHz CM3 radio controller running the BLE stack. Its security subsystem includes EdgeLock Secure Enclave with hardware AES-128/192/256, ECC P-256/384, SHA2-256/384, TRNG, and PRINCE on-the-fly flash decryption.
Power management integrates DC/DC 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). Peripheral set includes two LPUARTs with LIN, two LPI2Cs, two LPSPIs, MIPI-I3C, FlexIO, 16-bit ADC (2 Msps), two analog comparators, and RTC with 32 KB SRAM retention in power-down mode.
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 instruction cache |
| Memory | 1 MB embedded flash (PRINCE-encrypted option) and 128 KB SRAM with ECC/parity protection |
| Wireless | Bluetooth LE 5.3 radio with –106 dBm sensitivity (125 kbps LR), +10 dBm TX output, and 24 simultaneous connections |
| Interface | FlexCAN supporting CAN 2.0B only (no CAN FD), two LPUARTs with LIN, two LPI2Cs, two LPSPIs, MIPI-I3C, FlexIO |
| Security | EdgeLock Secure Enclave with hardware AES/SHA/ECC/TRNG, secure boot ROM, UUID, IEEE MAC subaddress, tamper detection |
| Power | <5.3 mA active core current (96 MHz), <3 μA power-down with RTC + 32 KB SRAM retention, <1.5 μA deep power-down |
| Qualification | AEC-Q100 Grade 2 (–40 °C to +105 °C ambient), MISRA C:2012, ASPICE compliant |
Pinout & Package
Package: 48-pin HVQFN (7 mm × 7 mm × 0.85 mm), pitch 0.5 mm, wettable flanks - SOT619-17(D) per NXP package drawing.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD_IO_ABC | Digital I/O supply rail | Supplies Ports A/B/C, Flash, and comparators; requires 1.71–3.6 V; floating if unused |
| VDD_CORE | Core logic supply | Feeds Cortex-M33 core domain via internal LDO; accepts 1.25–3.6 V input |
| VDD_RF | RF analog supply | Powers 32 MHz RF oscillator and BLE transceiver analog blocks; 1.175–3.6 V range |
| PTA0/PTA1 | GPIO / SWD debug | Default SWD clock/data pins; configurable as general-purpose I/O with pull-up/down control |
| PTB0–PTB7 | FlexCAN channel A signals | Support CAN_H/CAN_L differential pair; require external termination and ESD protection |
| PTC0–PTC7 | LPUART0/LPUART1 interfaces | Enable LIN-compliant UART operation; support automatic baud rate detection and break detection |
| RTC_CLKIN | 32.768 kHz crystal input | Drives real-time counter and low-power timers; supports external crystal or buffered clock source |
| RF_ANT | RF single-ended antenna port | Connects to on-chip balun; requires matching network for 50 Ω impedance and harmonic filtering |
Key Features
| Feature | Design Value |
|---|---|
| Secure Boot & Debug | Immutable ROM-based boot loader enforcing signed firmware images and disabling insecure debug interfaces unless authorized |
| PRINCE Flash Encryption | Hardware-accelerated XEX-mode block cipher enabling on-the-fly decryption of encrypted flash contents at runtime |
| EdgeLock Secure Enclave | Isolated execution environment with dedicated crypto accelerators, key storage, and tamper response (e.g., zeroization on trigger) |
| Smart Power Switch | Ultra-low-leakage switch enabling sub-100 nA sleep current while retaining RTC functionality and GPIO wake-up capability |
| Low-Power Peripherals | LPUART/LPI2C/LPSPI modules retain full functionality in low-power modes with <1 μA static current per module |
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, BLE link management, and CAN message relay to body control module. Use Value: Meets ISO 14229 UDS security access requirements with hardware-accelerated ECDSA and secure key storage in EdgeLock enclave. | Use Scenario: Seamless vehicle entry and engine start without physical key interaction, relying on proximity detection and secure handshaking. IC Role / Device Role / Timing Role: Dual-role processor managing low-duty-cycle BLE advertising/scanning and real-time CAN message arbitration for immobilizer handshake. Use Value: Achieves <300 ms end-to-end latency from fob detection to engine cranking using integrated 96 MHz M33 core and deterministic FlexCAN timing. |
| Wireless BMS Node | Industrial Asset Tracking |
Use Scenario: Battery cell monitoring node transmitting voltage/temperature data over BLE to gateway, with optional CAN backhaul to main BMS controller. IC Role / Device Role / Timing Role: Sensor fusion hub aggregating ADC readings, performing CRC-protected CAN frame assembly, and scheduling BLE advertisements based on state-of-charge thresholds. Use Value: Enables >10-year battery life via sub-3 μA power-down mode with RTC-triggered wake-up and hardware-accelerated AES-GCM for secure telemetry. | Use Scenario: Ruggedized sensor node deployed in factory environments tracking location, vibration, and temperature of mobile assets. IC Role / Device Role / Timing Role: Edge intelligence unit running localization algorithms (e.g., BLE AoA/AoD), storing logs in encrypted flash, and synchronizing time via RTC with NTP fallback. Use Value: Delivers ±1 m indoor positioning accuracy using hardware timestamping in 56-bit timer and BLE 2 Mbps PHY with GMSK modulation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar wireless MCU applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| KW45B41Z83AFTBT | Identical package and core specs, but adds CAN FD compliance per ISO 11898-1 and supports higher data rates (5 Mbps). | Required for next-gen automotive networks needing CAN FD bandwidth; not drop-in due to different peripheral register mapping and driver stack dependencies. | Select when CAN FD protocol stack integration and 5 Mbps bus throughput are mandatory; verify bootloader compatibility with updated CAN FD controller IP. |
| KW45Z41082AFTBT | MCU-only variant (no BLE radio), same 1 MB/128 KB memory, identical package, and pin-compatible footprint. | Suitable for wired-only designs where BLE is unnecessary; eliminates RF layout complexity and certification overhead. | Choose when system already includes external BLE module or uses alternative wireless (e.g., Wi-Fi/Thread); reduces BOM cost and simplifies EMC validation. |
Compared with KW45B41Z82AFTBT, KW45B41Z83AFTBT enables future-proof CAN FD integration at the cost of increased software validation effort, while KW45Z41082AFTBT removes RF subsystem complexity entirely - making it optimal for cost-sensitive, non-wireless automotive gateways or industrial controllers.
Availability
KW45B41Z82AFTBT is available at Aetrix Electronics and suitable for automotive secure access systems, industrial wireless sensor networks, and battery-powered edge devices requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for KW45B41Z82AFTBT 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, RF, and embedded security.
The KW45 product line delivers highly secure, dual-protocol (BLE + CAN) wireless MCUs targeting automotive access, PEPS, and industrial edge nodes - combining Arm TrustZone-M, EdgeLock Secure Enclave, and AEC-Q100 qualification in a single die.
FAQ
What is the maximum operating temperature for KW45B41Z82AFTBT?
KW45B41Z82AFTBT is AEC-Q100 Grade 2 qualified with an ambient operating temperature range of –40 °C to +105 °C. Junction temperature is rated up to +125 °C. This specification is validated under continuous operation with proper PCB thermal design and meets automotive under-hood environmental requirements.
Does KW45B41Z82AFTBT support CAN FD?
No, KW45B41Z82AFTBT supports FlexCAN compliant with CAN 2.0B only, not CAN FD. The "82" suffix in the part number explicitly denotes CAN-only capability, whereas "83" variants (e.g., KW45B41Z83AFTBT) add CAN FD support per ISO 11898-1. This distinction is confirmed in NXP's official ordering information tables.
What security features are implemented in KW45B41Z82AFTBT?
KW45B41Z82AFTBT integrates Arm TrustZone-M, EdgeLock Secure Enclave with hardware AES-128/192/256, SHA2-256/384, ECC P-256/384, TRNG, PRINCE flash encryption, secure boot ROM, and four digital tamper pins. These features enable secure boot, encrypted firmware updates, and runtime key protection meeting automotive cybersecurity standards.
What package type and dimensions does KW45B41Z82AFTBT use?
KW45B41Z82AFTBT uses a 48-pin HVQFN package (SOT619-17(D)), measuring 7 mm × 7 mm × 0.85 mm with 0.5 mm pitch and wettable flanks. This package supports automated optical inspection (AOI) and improves solder joint reliability in automotive-grade reflow profiles.
How much SRAM is available on KW45B41Z82AFTBT and what protections does it have?
KW45B41Z82AFTBT provides 128 KB of on-chip SRAM with built-in error correction code (ECC) and parity checking. Memory regions can be partitioned into secure/non-secure domains via TrustZone-M, and access permissions are enforced by the Trusted Resource Domain Controller (TRDC) to prevent unauthorized reads or writes.
KW45B41Z82AFTBT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- Kinetis KW45B
- Package/Case:
- 48-VFQFN Exposed Pad
- Packaging:
- Tray
- 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)
KW45B41Z82AFTBT FAQ
1.How can I place an order for KW45B41Z82AFTBT through Aetrix?
Please submit a Request for Quotation (RFQ) for KW45B41Z82AFTBT 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 KW45B41Z82AFTBT reliable?
The price and inventory of KW45B41Z82AFTBT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for KW45B41Z82AFTBT is usually 5 days.
3.What payment methods are accepted for KW45B41Z82AFTBT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for KW45B41Z82AFTBT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for KW45B41Z82AFTBT?
KW45B41Z82AFTBT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your KW45B41Z82AFTBT 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 KW45B41Z82AFTBT?
For technical support, including KW45B41Z82AFTBT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your KW45B41Z82AFTBT requirements.
6.How does Aetrix verify that KW45B41Z82AFTBT is sourced from the original manufacturer or authorized distributors?
All KW45B41Z82AFTBT 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 KW45B41Z82AFTBT meets industry standards.
7.What is the process for return or replacement of KW45B41Z82AFTBT?
All KW45B41Z82AFTBT units undergo pre-shipment inspection (PSI). If there is an issue with KW45B41Z82AFTBT, 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 KW45B41Z82AFTBT part is unused and in its original packaging.
Return procedure for KW45B41Z82AFTBT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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