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NXP Semiconductors KW45B41Z83AFPBR
- Part No.:
- KW45B41Z83AFPBR
- Manufacturer:
- NXP Semiconductors
- Category:
- RF Transceiver ICs
- Package:
- 40-VFQFN Exposed Pad
- Datasheet:
-
KW45B41Z83AFPBR.pdf
- Description:
- IC RF TXRX+MCU BLE 40HVQFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,154
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Product details
Overview
KW45B41Z83AFPBR from NXP Semiconductors is a highly secure, single-chip wireless MCU integrating an Arm Cortex-M33 core (up to 96 MHz), 1 MB flash/128 KB SRAM, Bluetooth Low Energy 5.3 radio, and FlexCAN supporting CAN FD per ISO 11898-1 - designed for automotive secure access and industrial wireless sensor networks.
For engineers reviewing the KW45B41Z83AFPBR datasheet, KW45B41Z83AFPBR pinout, KW45B41Z83AFPBR application, or KW45B41Z83AFPBR equivalent, this page delivers verified technical context, AEC-Q100 Grade 2 qualification, TrustZone-M security architecture, real-time power mode current values, and confirmed 6×6 mm 40-pin HVQFN wettable flank package details - all directly traceable to NXP's KW45 Product Family Rev. 9 datasheet.
Technical Context
The KW45B41Z83AFPBR implements a dual-core architecture: a main Arm Cortex-M33 application core with TrustZone-M, IEEE 754 FPU, and 8 KB code cache, plus a dedicated CM3 radio controller core running at up to 64 MHz. It integrates EdgeLock™ Secure Enclave with hardware AES-128/256, ECC, SHA2, TRNG, and PRINCE encryption for on-the-fly flash decryption.
Its mixed-signal subsystem includes a 16-bit SAR ADC (2 Msps), two analog comparators with 8-bit DACs, and dual LPUARTs with LIN support. Power management features include DC/DC buck regulator, Smart Power Switch (<100 nA sleep current), and multiple low-power modes - enabling sub-3 μA power-down with RTC active and 32 KB SRAM retention.
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/parity protection |
| Wireless | Bluetooth LE 5.3 radio: –106 dBm sensitivity @ 125 kbps, +10 dBm TX output, 24 simultaneous connections |
| CAN Interface | FlexCAN supporting CAN FD per ISO 11898-1, AEC-Q100 Grade 2 qualified |
| Security | EdgeLock Secure Enclave with hardware AES-128/192/256, ECC NIST P-256/384, SHA2-256/384, TRNG, and secure boot ROM |
| Power | <5.3 mA active core current @ 96 MHz; <3 μA power-down with RTC + 32 KB SRAM retention |
| Temperature | –40 °C to +105 °C ambient operating range; junction rated to +125 °C |
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 in constrained PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD_IO_ABC | Digital I/O supply rail | 1.71–3.6 V input powering Ports A/B/C, Flash, and analog comparators; supports independent voltage domain control |
| VDD_CORE | Core logic supply | 1.25–3.6 V input to LDO_CORE regulator; powers Cortex-M33 core, cache, and system peripherals |
| VDD_RF | RF analog supply | 1.175–3.6 V rail dedicated to 32 MHz RF oscillator and BLE radio analog blocks; critical for RF stability |
| PTA0/PTA1 | GPIO / CAN TX/RX | Configurable as general-purpose I/O or FlexCAN differential pair; requires external termination for CAN FD compliance |
| PTD0 | LPUART0 RX | Low-power UART receive pin with LIN slave capability; operates down to 1.71 V supply with <1 μA leakage |
| RTC_CLKIN | 32.768 kHz crystal input | Connects to external tuning fork crystal; enables precise RTC operation during deep power-down modes |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 2 certification | Validated for automotive ambient temperatures up to +105 °C and full ISO 11898-1 CAN FD compliance |
| EdgeLock Secure Enclave | Hardware-isolated domain providing cryptographic acceleration, key lifecycle management, and tamper detection with timestamped digital inputs |
| Smart Power Switch | Ultra-low-leakage switch enabling <100 nA sleep current with wake-up via internal timer or GPIO edge |
| On-chip balun | Integrated RF matching network eliminates external balun components, reducing BOM count and board area for BLE antenna interface |
| FlexIO peripheral | Programmable module supporting UART/I²C/SPI emulation, PWM generation, or custom waveform timing - decoupling firmware from fixed peripheral constraints |
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: Primary secure MCU handling cryptographic operations, CAN FD communication with body control module, and ultra-low-power wake-on-RF event detection. Use Value: Enables sub-3 μA standby current with fast wake-from-RF, meeting OEM requirements for multi-year battery life in passive entry systems. | Use Scenario: Seamless vehicle entry and engine start without physical key interaction, requiring synchronized BLE and CAN FD handshaking. IC Role / Device Role / Timing Role: Dual-role device executing secure boot, BLE proximity sensing, and time-critical CAN FD message transmission for immobilizer handshake. Use Value: Integrates TrustZone-M isolation and EdgeLock enclave to separate secure boot, crypto, and CAN FD stack - preventing side-channel attacks on PEPS credentials. |
| Wireless Battery Management (WBMS) | Industrial Positioning/Localization |
Use Scenario: Monitoring cell voltages, temperatures, and state-of-charge across EV battery packs using wireless mesh nodes. IC Role / Device Role / Timing Role: Sensor node MCU performing ADC sampling, BLE data aggregation, and CAN FD gateway forwarding to central BMS controller. Use Value: Combines 16-bit SAR ADC (2 Msps) for precision voltage measurement and FlexCAN FD for deterministic high-bandwidth pack-level communication. | 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: Time-synchronized BLE anchor node with 56-bit timestamp timer and signal frequency analyzer (SFA) for clock drift compensation. Use Value: Delivers ±50 ppm clock accuracy via SFA-based calibration and supports BLE Long Range modes (–106 dBm sensitivity) for extended indoor coverage. |
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 silicon, 7×7 mm 48-pin HVQFN package; higher pin count enables additional GPIO, UART, and SPI channels | Better suited for designs requiring >32 GPIO or dual LPUART + dual LPSPI simultaneously | Select when board layout allows larger footprint and extra peripherals are needed; not pin-compatible with KW45B41Z83AFPBR |
| KW38Z41083AFPBR | Legacy KW38 family part: Cortex-M0+ core, BLE 5.0 only, no CAN FD, 512 KB flash, same 6×6 40-pin HVQFN | Lower-cost option for non-automotive BLE-only applications without CAN FD or M33 security requirements | Choose only if BLE 5.0 suffices and EdgeLock enclave, TrustZone-M, or CAN FD are unnecessary |
Compared with KW45B41Z83AFTBR, KW45B41Z83AFPBR trades pin count for compactness - ideal for space-constrained automotive modules. Against KW38Z41083AFPBR, it delivers hardened security, CAN FD, and M33 performance at higher cost and complexity.
Availability
KW45B41Z83AFPBR is available at Aetrix Electronics and suitable for automotive secure access systems, wireless battery management, and industrial positioning applications requiring stable component supply, AEC-Q100 qualification, and long-term lifecycle support.
Supply support for KW45B41Z83AFPBR 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 line targets automotive-grade wireless MCU applications - specifically secure car access, PEPS, and WBMS - by unifying BLE 5.3, CAN FD, Arm TrustZone-M, and EdgeLock Secure Enclave into a single AEC-Q100 qualified die.
FAQ
What is the maximum operating temperature for KW45B41Z83AFPBR?
KW45B41Z83AFPBR is AEC-Q100 Grade 2 qualified with an ambient operating temperature range of –40 °C to +105 °C and a junction temperature limit of +125 °C. This rating is validated per JEDEC standards and applies to all functional modes including BLE transmit at +10 dBm and CAN FD high-speed operation.
Does KW45B41Z83AFPBR support CAN FD in addition to classical CAN?
Yes, KW45B41Z83AFPBR integrates FlexCAN compliant with ISO 11898-1, supporting both classical CAN (up to 1 Mbps) and CAN FD (up to 5 Mbps data phase) with programmable bit timing and flexible data-length payloads. The implementation includes error confinement, loopback testing, and hardware message filtering.
What security features are implemented in the EdgeLock Secure Enclave of KW45B41Z83AFPBR?
KW45B41Z83AFPBR's EdgeLock Secure Enclave provides hardware-accelerated AES-128/192/256, ECC NIST P-256/384, SHA2-256/384, TRNG, PRINCE flash encryption, secure key storage, and tamper detection with timestamped digital inputs - all isolated from the main Cortex-M33 domain via TrustZone-M and TRDC.
What is the BLE receive sensitivity of KW45B41Z83AFPBR at 2 Mbps data rate?
KW45B41Z83AFPBR achieves –95 dBm receiver sensitivity at 2 Mbps data rate under standard test conditions (3.3 V supply, 25 °C). This value is measured per Bluetooth SIG PHY test specifications and enables robust link budget in noisy industrial environments.
Is KW45B41Z83AFPBR pin-compatible with other members of the KW45 family?
KW45B41Z83AFPBR shares the 6×6 mm 40-pin HVQFN wettable flank package with KW45B41Z52/AFPxx and KW45Z410xx/AFPxx variants, but pin functions differ across memory size, radio presence, and CAN enablement. Direct replacement requires verification of peripheral mapping, especially for CAN TX/RX, LPUART, and ADC channel assignments.
KW45B41Z83AFPBR 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)
KW45B41Z83AFPBR FAQ
1.How can I place an order for KW45B41Z83AFPBR through Aetrix?
Please submit a Request for Quotation (RFQ) for KW45B41Z83AFPBR 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 KW45B41Z83AFPBR reliable?
The price and inventory of KW45B41Z83AFPBR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for KW45B41Z83AFPBR is usually 5 days.
3.What payment methods are accepted for KW45B41Z83AFPBR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for KW45B41Z83AFPBR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for KW45B41Z83AFPBR?
KW45B41Z83AFPBR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your KW45B41Z83AFPBR 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 KW45B41Z83AFPBR?
For technical support, including KW45B41Z83AFPBR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your KW45B41Z83AFPBR requirements.
6.How does Aetrix verify that KW45B41Z83AFPBR is sourced from the original manufacturer or authorized distributors?
All KW45B41Z83AFPBR 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 KW45B41Z83AFPBR meets industry standards.
7.What is the process for return or replacement of KW45B41Z83AFPBR?
All KW45B41Z83AFPBR units undergo pre-shipment inspection (PSI). If there is an issue with KW45B41Z83AFPBR, 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 KW45B41Z83AFPBR part is unused and in its original packaging.
Return procedure for KW45B41Z83AFPBR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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