My Inquiry
My Account
NXP Semiconductors KW45B41Z83AFTBR
- Part No.:
- KW45B41Z83AFTBR
- Manufacturer:
- NXP Semiconductors
- Category:
- RF Transceiver ICs
- Package:
- 48-VFQFN Exposed Pad
- Datasheet:
-
KW45B41Z83AFTBR.pdf
- Description:
- IC RF TXRX+MCU BLE 48HVQFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,903
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
KW45B41Z83AFTBR 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 KW45B41Z83AFTBR datasheet, KW45B41Z83AFTBR pinout, KW45B41Z83AFTBR application, or KW45B41Z83AFTBR equivalent, this page delivers verified technical context, AEC-Q100 Grade 2 qualification, EdgeLock™ Secure Enclave details, low-power operation metrics (<3 μA in power-down with RTC active), and real-world automotive/industrial use cases without generic assumptions.
Technical Context
The KW45B41Z83AFTBR implements a dual-core architecture: a 96 MHz Arm Cortex-M33 application core with TrustZone-M, IEEE 754 FPU, DSP, MPU, and 8 KB code cache; plus a dedicated 64 MHz CM3 radio controller managing BLE 5.3 link layer with up to 24 simultaneous connections and –106 dBm sensitivity at 125 kbps.
Its security subsystem includes Arm TrustZone-M, a programmable Trusted Resource Domain Controller (TRDC), and an isolated EdgeLock™ Secure Enclave with hardware-accelerated AES-128/192/256, ECC NIST P-256/384, SHA2-256/384, PRINCE encryption, TRNG, and secure key storage - all enabling certified secure boot, OTA updates, and tamper-resistant execution.
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 (with optional PRINCE encryption) and 128 KB SRAM (ECC-protected) |
| Wireless | Bluetooth LE 5.3 radio with –106 dBm RX sensitivity (125 kbps), +10 dBm TX output, and 24 concurrent connections |
| CAN Interface | FlexCAN supporting CAN FD compliant with ISO 11898-1, including data rates up to 5 Mbps and frame payloads up to 64 bytes |
| Security | EdgeLock™ Secure Enclave with hardware crypto accelerators (AES, ECC, SHA2), TRNG, secure key management, and factory-rooted trust |
| Power | <3 μA in power-down mode with RTC active and 32 KB SRAM retention; <1.5 μA in Deep Power-Down mode |
| Qualification | AEC-Q100 Grade 2 (–40 °C to +105 °C ambient), MISRA C:2012 and ASPICE compliant |
Pinout & Package
Package: 48-pin HVQFN (7 mm × 7 mm × 0.85 mm, 0.5 mm pitch, wettable flanks).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD_CORE | Core domain supply | 1.25–3.6 V input powering Cortex-M33 core and digital logic; supports bypass mode |
| VDD_SYS | System domain supply | 1.8–2.25 V for PMC, EFUSE, SRTC, and FROs; enables fuse programming at 2.75 V |
| VDD_IO_ABC | I/O bank A/B/C supply | 1.71–3.6 V rail for GPIO, Flash, and comparators; VIH/VIL referenced to this voltage |
| VDD_RF | RF analog supply | 1.175–3.6 V powering 32 MHz RF oscillator and BLE transceiver analog blocks |
| PTA0 / PTB0 | CAN FD TX/RX | Dedicated differential pair for FlexCAN bus communication; supports high-speed CAN FD frames |
| PTD0 | LPUART0 RX | Low-power UART receive pin with LIN slave capability; referenced to VDD_SYS, not VDD_IO_D |
| ANT | RF antenna interface | Single-ended bidirectional RF port with integrated balun; ±250 V CDM ESD rating |
| RESET_b | Active-low reset input | Asynchronous reset signal with internal pull-up; triggers full system reset and secure enclave reinitialization |
Key Features
| Feature | Design Value |
|---|---|
| Secure Boot & Debug | Immutable ROM-based secure boot enforcing signed firmware images; debug access gated by EdgeLock™ policy engine |
| Hardware Crypto Acceleration | Dedicated engines for AES-128/192/256 (GCM/CCM), ECC P-256/384, SHA2-256/384, and PRINCE XEX block cipher for on-the-fly flash decryption |
| FlexCAN with CAN FD | Full ISO 11898-1 implementation supporting classic CAN and CAN FD up to 5 Mbps with 64-byte payloads and flexible bit timing |
| Ultra-Low-Power Modes | Deep Power-Down mode draws <1.5 μA with RTC running and 32 KB SRAM retained; Smart Power Switch enables 100 nA sleep current |
| BLE 5.3 Radio Performance | –106 dBm sensitivity at 125 kbps Long Range mode; programmable TX output from –20 to +10 dBm; integrated balun reduces external BOM count |
Applications
| Secure Car Access | Passive Entry/Start (PEPS) |
|---|---|
Use Scenario: Wireless authentication between vehicle and fob during approach or ignition. IC Role / Device Role / Timing Role: Primary secure MCU executing cryptographic challenge-response, BLE 5.3 radio handling encrypted advertising/scanning, and FlexCAN relaying authenticated commands to body control module. Use Value: Enables sub-100 ms handoff latency and anti-relay protection via time-of-flight measurement using integrated SFA and timestamp timer. | Use Scenario: Seamless entry and engine start without physical key interaction. IC Role / Device Role / Timing Role: Dual-role device acting as BLE initiator (for fob detection) and CAN FD node (for vehicle network command injection), with EdgeLock™ enforcing strict domain isolation between radio and CAN peripherals. Use Value: Meets AEC-Q100 Grade 2 requirements and supports secure over-the-air updates to patch cryptographic vulnerabilities post-deployment. |
| Wireless Battery Management | Industrial Positioning/Localization |
Use Scenario: Monitoring cell voltages, temperatures, and state-of-charge in EV battery packs via wireless mesh. IC Role / Device Role / Timing Role: BLE 5.3 node collecting analog sensor data (16-bit ADC, 2 Msps), encrypting payloads in EdgeLock™ enclave, and transmitting via CAN FD gateway to main BMS controller. Use Value: Eliminates high-voltage isolation barriers and wiring harnesses while maintaining ASIL-B functional safety alignment through SRAM ECC, watchdog timers, and clock accuracy monitoring. | Use Scenario: Real-time indoor asset tracking using BLE angle-of-arrival (AoA) and time-difference-of-arrival (TDoA) techniques. IC Role / Device Role / Timing Role: High-precision timing node synchronizing multiple KW45B41Z83AFTBR units via BLE periodic advertising extensions and 56-bit timestamp timer for sub-microsecond event correlation. Use Value: Achieves <1 m localization accuracy using integrated 32.768 kHz crystal oscillator and signal frequency analyzer (SFA) for clock drift compensation across nodes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar wireless MCU applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| NRF52840-QIAA | No CAN FD interface; lacks AEC-Q100 qualification and EdgeLock™ Secure Enclave; BLE 5.0 only; 1 MB flash but only 256 KB RAM | Suitable for consumer IoT gateways or BLE beacons where automotive-grade reliability and CAN integration are unnecessary | Select when cost-sensitive non-automotive designs prioritize BLE range over secure CAN connectivity and functional safety compliance |
| S32K144HAT0MLHT | Dedicated automotive MCU with CAN FD and AEC-Q100 Grade 1, but no integrated BLE radio; relies on external wireless companion chip | Used in body control modules requiring high-integrity CAN FD networking without embedded wireless stack overhead | Select when system architecture mandates separation of safety-critical CAN processing from wireless functions, and external BLE coexistence is acceptable |
Compared with NRF52840-QIAA and S32K144HAT0MLHT, KW45B41Z83AFTBR uniquely integrates BLE 5.3, CAN FD, and EdgeLock™ Secure Enclave in a single AEC-Q100 Grade 2 package - eliminating inter-chip latency, reducing BOM count, and enabling unified secure firmware updates across radio and vehicle network domains.
Availability
KW45B41Z83AFTBR is available at Aetrix Electronics and suitable for automotive secure access systems, wireless battery management, and industrial positioning applications requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for KW45B41Z83AFTBR 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 edge AI processing.
The KW45 product line targets automotive and industrial wireless edge nodes requiring certified security, functional safety, and multi-protocol integration - specifically addressing secure car access, PEPS, WBMS, and precision localization.
FAQ
What is the maximum operating temperature range for KW45B41Z83AFTBR?
KW45B41Z83AFTBR is qualified to AEC-Q100 Grade 2 with an ambient operating temperature range of –40 °C to +105 °C and a junction temperature limit of –40 °C to +125 °C. This specification is validated across all core, memory, radio, and CAN FD functions under worst-case voltage and load conditions per the official NXP KW45 datasheet Rev. 9.
Does KW45B41Z83AFTBR support Bluetooth LE Long Range mode?
Yes, KW45B41Z83AFTBR supports Bluetooth LE Long Range mode with confirmed receive sensitivities of –106 dBm at 125 kbps and –102 dBm at 500 kbps. These values are measured per Bluetooth SIG test specifications and documented in the KW45 family datasheet Section 3.4.2, enabling extended coverage in automotive and industrial environments.
How does the EdgeLock™ Secure Enclave in KW45B41Z83AFTBR protect firmware updates?
KW45B41Z83AFTBR uses its EdgeLock™ Secure Enclave to authenticate and decrypt over-the-air (OTA) firmware updates via hardware-accelerated ECDSA signature verification and AES-GCM decryption. The enclave isolates update validation from the application core, preventing rollback attacks and ensuring only cryptographically signed images execute - a capability confirmed in NXP Application Note AN12626.
Is KW45B41Z83AFTBR pin-compatible with other KW45 variants like KW45B41Z53AFTBR?
No, KW45B41Z83AFTBR is not pin-compatible with KW45B41Z53AFTBR. Both use the same 48-pin HVQFN package, but KW45B41Z53AFTBR has 512 KB flash and lacks CAN FD support, resulting in different peripheral mappings and register configurations. Pin compatibility is not claimed in the KW45 datasheet or NXP ordering documentation.
What power modes does KW45B41Z83AFTBR support for ultra-low-energy operation?
KW45B41Z83AFTBR supports multiple low-power states including power-down mode (<3 μA with RTC active and 32 KB SRAM retention), Deep Power-Down mode (<1.5 μA with RTC active), and Smart Power Switch mode (≤100 nA sleep current). These modes are validated per Section 2.2.7 of the KW45 datasheet and enable multi-year battery life in wireless sensor deployments.
KW45B41Z83AFTBR 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)
KW45B41Z83AFTBR FAQ
1.How can I place an order for KW45B41Z83AFTBR through Aetrix?
Please submit a Request for Quotation (RFQ) for KW45B41Z83AFTBR 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 KW45B41Z83AFTBR reliable?
The price and inventory of KW45B41Z83AFTBR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for KW45B41Z83AFTBR is usually 5 days.
3.What payment methods are accepted for KW45B41Z83AFTBR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for KW45B41Z83AFTBR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for KW45B41Z83AFTBR?
KW45B41Z83AFTBR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your KW45B41Z83AFTBR 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 KW45B41Z83AFTBR?
For technical support, including KW45B41Z83AFTBR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your KW45B41Z83AFTBR requirements.
6.How does Aetrix verify that KW45B41Z83AFTBR is sourced from the original manufacturer or authorized distributors?
All KW45B41Z83AFTBR 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 KW45B41Z83AFTBR meets industry standards.
7.What is the process for return or replacement of KW45B41Z83AFTBR?
All KW45B41Z83AFTBR units undergo pre-shipment inspection (PSI). If there is an issue with KW45B41Z83AFTBR, 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 KW45B41Z83AFTBR part is unused and in its original packaging.
Return procedure for KW45B41Z83AFTBR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
KW45B41Z83AFTBR Tags
-
ESP32-D0WD-V3
Espressif Systems
-
ESP8266EX
Espressif Systems
-
ESP32-S3
Espressif Systems
-
NRF24L01P-R7
Nordic Semiconductor ASA
-
NRF24L01P-R
Nordic Semiconductor ASA
-
ESP32-U4WDH
Espressif Systems
-
DA14531-00000OG2
Renesas
-
ESP32-C6FH4
Espressif Systems
-
DA14531-00000FX2
Renesas
-
NRF24L01P-T
Nordic Semiconductor ASA
-
NRF52810-QCAA-R
Nordic Semiconductor ASA
-
ESP32-S3FN8
Espressif Systems
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
