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NXP Semiconductors KW45B41Z83AFPBT
- Part No.:
- KW45B41Z83AFPBT
- Manufacturer:
- NXP Semiconductors
- Category:
- RF Transceiver ICs
- Package:
- 40-VFQFN Exposed Pad
- Datasheet:
-
KW45B41Z83AFPBT.pdf
- Description:
- IC RF TXRX+MCU BLE 40HVQFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,225
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Product details
Overview
KW45B41Z83AFPBT 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 battery management systems.
For engineers reviewing the KW45B41Z83AFPBT datasheet, KW45B41Z83AFPBT pinout, KW45B41Z83AFPBT application, or KW45B41Z83AFPBT equivalent, this page delivers verified technical context, AEC-Q100 Grade 2 qualification, TrustZone-M security architecture, on-the-fly PRINCE encryption, and low-power operation down to 300 nA - all specific to the 6×6 mm 40-pin HVQFN wettable flank package.
Technical Context
The KW45B41Z83AFPBT implements a dual-core architecture: a main Arm Cortex-M33 application core with TrustZone-M, IEEE 754 FPU, DSP, MPU, and 8 KB code cache; and a dedicated CM3 radio core running at up to 64 MHz for BLE link-layer processing. It integrates EdgeLock™ Secure Enclave with hardware AES-128/256, ECC, SHA2, TRNG, and secure key lifecycle management.
Its power subsystem includes 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). The device supports four digital tamper pins, factory-rooted UUID and MAC, and secure OTA updates - all validated for automotive-grade reliability across –40 °C to +105 °C ambient.
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 on-chip flash (PRINCE-encrypted optional) + 128 KB SRAM with ECC/parity protection |
| Wireless | Bluetooth LE 5.3 radio with –106 dBm sensitivity (125 kbps LR), +10 dBm TX output, 24 simultaneous connections |
| CAN Interface | FlexCAN supporting CAN 2.0B and CAN FD (ISO 11898-1), AEC-Q100 Grade 2 qualified |
| Security | EdgeLock Secure Enclave with AES-128/192/256, ECC P-192–521, SHA2-224/256/384/512, TRNG, secure boot ROM |
| Power | <5.3 mA active core current @ 96 MHz; <3 μA power-down with RTC + 32 KB SRAM retention; 300 nA deep sleep with GPIO/timer wake-up |
| Temperature | Ambient operating range –40 °C to +105 °C; junction range –40 °C to +125 °C; AEC-Q100 Grade 2 certified |
Pinout & Package
Package: 40-pin HVQFN (SOT618-13(DD)), 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 | Provides 1.71–3.6 V power to Ports A/B/C, Flash, and comparators; supports independent voltage scaling |
| VDD_CORE | Core logic supply | 1.25–3.6 V input to LDO_CORE; powers Cortex-M33 core, cache, and system peripherals |
| VDD_RF | RF analog supply | 1.175–3.6 V supply for 32 MHz RF oscillator and BLE transceiver analog blocks |
| PTA0 / PTA1 | GPIO / CAN TX/RX | Configurable as FlexCAN differential pair (CAN_H/CAN_L) or general-purpose I/O with interrupt capability |
| PTD0 | LPUART0 RX | Low-power UART receive input with LIN bus support; operates in all low-power modes except deep power-down |
| RTC_CLKIN | 32.768 kHz crystal input | Connects external 32.768 kHz crystal for real-time clock; enables timekeeping during power-down modes |
| SWD_DIO / SWD_CLK | Debug interface | Two-pin Serial Wire Debug interface supporting secure debug authentication and trace via SWO |
| VSSA | Analog ground | Separate analog reference ground for ADC, DAC, and VREF to minimize noise coupling into precision analog circuits |
Key Features
| Feature | Design Value |
|---|---|
| Secure Boot & Debug | Immutable ROM-based secure boot with hash verification; debug access enforced by EdgeLock enclave policies and TRDC domain control |
| On-the-fly Encryption | PRINCE XEX block cipher mode encrypts flash contents; decryption occurs transparently during instruction fetch without CPU overhead |
| FlexCAN with CAN FD | Full ISO 11898-1 implementation including bit-rate switching, payload up to 64 bytes, and error confinement for automotive ECU communication |
| Ultra-Low-Power Modes | Deep Power-Down mode draws <1.5 μA with RTC active; Smart Power Switch enables 300 nA sleep with GPIO/timer wake-up capability |
| Hardware Crypto Acceleration | Dedicated AES, ECC, SHA2, and Poly1305 engines offload cryptographic operations from M33 core, reducing latency and power consumption |
Applications
| Secure Car Access | Passive Entry/Start (PEPS) |
|---|---|
Use Scenario: Wireless authentication between vehicle and fob during approach or ignition initiation. IC Role / Device Role / Timing Role: Primary secure MCU handling encrypted challenge-response, BLE 5.3 advertising/scanning, and CAN FD command relay to body control module. Use Value: Enables sub-100 ms entry/start latency with AEC-Q100 Grade 2 reliability and tamper-resistant key storage in EdgeLock enclave. | Use Scenario: Seamless vehicle entry and engine start without physical button press or key insertion. IC Role / Device Role / Timing Role: Dual-role processor executing low-latency proximity detection (BLE RSSI/angle-of-arrival), secure session establishment, and CAN FD message injection for door lock/unlock and immobilizer handshake. Use Value: Achieves <300 ms total system response using integrated 24-connection BLE stack and hardware-accelerated ECDSA signature verification. |
| Wireless Battery Management (WBMS) | Industrial Positioning/Localization |
Use Scenario: Monitoring cell voltage, temperature, and state-of-charge in EV battery packs via wireless sensor nodes. IC Role / Device Role / Timing Role: Sensor node MCU collecting ADC data from 16-bit SAR converter, performing local SoC estimation, and transmitting encrypted telemetry over BLE 5.3 long-range mode. Use Value: Delivers –106 dBm receive sensitivity at 125 kbps enabling >200 m line-of-sight range in noisy automotive environments with <5.3 mA active current. | Use Scenario: Indoor asset tracking using multi-node BLE beaconing and time-of-flight or RSSI triangulation. IC Role / Device Role / Timing Role: Edge node executing real-time BLE advertising, synchronized timestamp generation (56-bit timer), and secure firmware updates over OTA. Use Value: Supports concurrent 24 BLE connections and hardware timestamping for sub-10 cm localization accuracy in factory automation settings. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar wireless MCU applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| KW45B41Z83AFTBT | Same core, memory, and radio specs; differs only in 7×7 mm 48-pin HVQFN package (SOT619-17(D)) | Requires PCB redesign due to larger footprint, different pin count, and non-wettable flank option in some variants | Select when higher pin count is needed for expanded peripheral routing or thermal dissipation requirements exceed 6×6 mm limits. |
| KW45Z41083AFPBT | MCU-only variant (no integrated BLE radio); identical 1 MB flash/128 KB SRAM, Cortex-M33, CAN FD, and security features | Used where external BLE module is preferred or RF regulatory certification is handled separately | Choose when system-level RF design, antenna integration, or regional certification (FCC/CE) is managed externally to simplify validation scope. |
Compared with KW45B41Z83AFPBT, KW45B41Z83AFTBT offers identical functionality in a larger 48-pin package for enhanced routing flexibility, while KW45Z41083AFPBT removes the BLE radio to reduce RF design complexity - both retain full TrustZone-M, EdgeLock, and AEC-Q100 Grade 2 compliance.
Availability
KW45B41Z83AFPBT is available at Aetrix Electronics and suitable for automotive secure access systems, wireless battery management nodes, and industrial positioning gateways requiring stable component supply, long-term lifecycle support, and AEC-Q100-compliant sourcing.
Supply support for KW45B41Z83AFPBT 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 specializing in secure connectivity solutions for automotive, industrial, and IoT markets, with deep expertise in Arm-based MCUs and wireless SoCs.
The KW45 product family was engineered to deliver automotive-grade wireless MCU performance with integrated BLE 5.3, CAN FD, and hardware-enforced security - targeting secure car access, PEPS, and WBMS applications demanding functional safety and cryptographic integrity.
FAQ
What is the maximum operating frequency of the Arm Cortex-M33 core in KW45B41Z83AFPBT?
The KW45B41Z83AFPBT features an Arm Cortex-M33 core capable of operating at up to 96 MHz. This maximum frequency is achievable under specified voltage and temperature conditions (VDD_CORE ≥ 1.04 V, ambient ≤ +105 °C) and enables high-throughput execution of BLE protocol stacks, CAN FD messaging, and cryptographic operations within the device's power budget.
Does KW45B41Z83AFPBT support CAN FD compliant with ISO 11898-1?
Yes, KW45B41Z83AFPBT integrates FlexCAN that fully implements CAN Specification Version 2.0, Part B and CAN FD extensions per ISO 11898-1. It supports bit-rate switching, payloads up to 64 bytes, and error confinement mechanisms required for automotive ECU communication - validated under AEC-Q100 Grade 2 qualification.
What security features are implemented in the EdgeLock Secure Enclave of KW45B41Z83AFPBT?
The EdgeLock Secure Enclave in KW45B41Z83AFPBT provides hardware-accelerated AES-128/192/256, ECC NIST P-192–521 and Curve25519, SHA2-224/256/384/512, Poly1305, TRNG, secure key generation/storage/management, and secure boot ROM. It enforces privilege isolation via TrustZone-M and TRDC, preventing unauthorized access to cryptographic keys and sensitive firmware.
What is the lowest power consumption mode supported by KW45B41Z83AFPBT?
KW45B41Z83AFPBT supports Deep Power-Down mode with real-time clock active and less than 1.5 μA typical current draw. With the ultra-low-leakage Smart Power Switch enabled, it achieves as low as 300 nA sleep current while retaining wake-up capability via internal timer or GPIO - critical for battery-powered automotive sensors and industrial edge nodes.
Is KW45B41Z83AFPBT qualified for automotive applications?
Yes, KW45B41Z83AFPBT is AEC-Q100 Grade 2 qualified with an extended ambient operating temperature range of –40 °C to +105 °C. It also complies with MISRA C:2012 coding standards and Automotive SPICE (ASPICE) development processes - making it suitable for automotive secure car access, PEPS, and wireless battery management systems.
KW45B41Z83AFPBT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- Kinetis KW45B
- Package/Case:
- 40-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:
- 40-HVQFN (6x6)
KW45B41Z83AFPBT FAQ
1.How can I place an order for KW45B41Z83AFPBT through Aetrix?
Please submit a Request for Quotation (RFQ) for KW45B41Z83AFPBT 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 KW45B41Z83AFPBT reliable?
The price and inventory of KW45B41Z83AFPBT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for KW45B41Z83AFPBT is usually 5 days.
3.What payment methods are accepted for KW45B41Z83AFPBT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for KW45B41Z83AFPBT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for KW45B41Z83AFPBT?
KW45B41Z83AFPBT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your KW45B41Z83AFPBT 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 KW45B41Z83AFPBT?
For technical support, including KW45B41Z83AFPBT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your KW45B41Z83AFPBT requirements.
6.How does Aetrix verify that KW45B41Z83AFPBT is sourced from the original manufacturer or authorized distributors?
All KW45B41Z83AFPBT 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 KW45B41Z83AFPBT meets industry standards.
7.What is the process for return or replacement of KW45B41Z83AFPBT?
All KW45B41Z83AFPBT units undergo pre-shipment inspection (PSI). If there is an issue with KW45B41Z83AFPBT, 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 KW45B41Z83AFPBT part is unused and in its original packaging.
Return procedure for KW45B41Z83AFPBT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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