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NXP Semiconductors KW45Z41083AFTBT
- Part No.:
- KW45Z41083AFTBT
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 48-VFQFN Exposed Pad
- Datasheet:
-
KW45Z41083AFTBT.pdf
- Description:
- K4W1 HVQFN48
- Quantity:
- Payment:
- Shipping:
Inventory:1,077
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Product details
Overview
KW45Z41083AFTBT from NXP Semiconductors is a secure, automotive-grade wireless MCU integrating an Arm Cortex-M33 core (96 MHz), 1 MB flash, 128 KB SRAM, TrustZone-M, EdgeLock™ Secure Enclave, and FlexCAN supporting CAN FD per ISO 11898-1 - deployed in Passive Entry/Passive Start (PEPS) and Wireless Battery Management Systems (WBMS).
For engineers reviewing the KW45Z41083AFTBT datasheet, KW45Z41083AFTBT pinout, KW45Z41083AFTBT application, or KW45Z41083AFTBT equivalent, key selection criteria include AEC-Q100 Grade 2 qualification, on-the-fly PRINCE encryption, -40 °C to +105 °C operation, ultra-low power-down current (<3 μA with RTC active), and integrated CAN FD + BLE 5.3 radio subsystem.
Technical Context
The KW45Z41083AFTBT implements a dual-core architecture: the application core (Arm Cortex-M33 at up to 96 MHz) handles system control and security services, while a dedicated CM3 radio core (up to 64 MHz) manages BLE 5.3 link-layer operations independently. It integrates TrustZone-M for hardware-enforced memory isolation and an EdgeLock Secure Enclave with AES-128/256, ECC, SHA2, and TRNG.
Its power architecture includes a DC/DC buck regulator (1.8–3.6 V), Core_LDO (1.2–3.6 V), SYS_LDO (1.71–3.6 V), and Smart Power Switch (<100 nA sleep current). Safety features include SRAM ECC, dual watchdogs, CAC clock accuracy monitoring, and CRC calculators - all aligned with ASPICE and MISRA C:2012 compliance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | Arm Cortex-M33 @ 96 MHz with FPU, DSP, MPU, TrustZone-M, and 8 KB code cache |
| Memory | 1 MB flash (PRINCE-encrypted option) + 128 KB SRAM with ECC support |
| Wireless | BLE 5.3 radio with –106 dBm sensitivity (125 kbps LR), +10 dBm TX, 24 simultaneous connections |
| CAN Interface | FlexCAN supporting CAN FD (ISO 11898-1) and legacy CAN 2.0B |
| Security | EdgeLock Secure Enclave with AES-128/192/256, ECC NIST P-256/384, ECDSA, SHA2-256/512, TRNG |
| Power | <5.3 mA active core current (96 MHz); <3 μA power-down with RTC + 32 KB SRAM retention |
| Qualification | AEC-Q100 Grade 2, –40 °C to +105 °C ambient, MISRA C:2012, ASPICE compliant |
Pinout & Package
Package: 48-pin HVQFN (7 × 7 × 0.85 mm), pitch 0.5 mm, wettable flanks.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD_CORE | Core domain supply | 1.2 V nominal input to LDO_CORE; supports 1.25–3.6 V range for flexible power design |
| VDD_SYS | System domain supply | 1.8–2.25 V supply for PMC, EFUSE, SRTC, and FRO oscillators |
| VDD_IO_ABC | I/O bank A/B/C supply | 1.71–3.6 V rail powering GPIO, ADC, DAC, and CMP peripherals |
| VDD_RF | RF analog supply | 1.175–3.6 V supply for 32 MHz RF oscillator and BLE transceiver analog blocks |
| CAN_H / CAN_L | FlexCAN differential bus terminals | Direct connection to ISO 11898-1-compliant CAN FD physical layer; internal termination optional |
| RF_IN / RF_OUT | Single-ended RF port | Integrated balun enables direct connection to antenna or matching network without external components |
| SWD_DIO / SWD_CLK | Debug interface | Secure debug access via Arm Serial Wire Debug; protected by TrustZone and secure boot enforcement |
Key Features
| Feature | Design Value |
|---|---|
| On-the-fly PRINCE encryption | Enables encrypted flash storage with real-time decryption - protects firmware IP without runtime overhead |
| EdgeLock Secure Enclave | Hardware-isolated domain for key generation, storage, and crypto acceleration - prevents side-channel leakage |
| Smart Power Switch | Ultra-low-leakage switch with <100 nA sleep current and GPIO/timer wake-up - extends battery life in WBMS |
| FlexCAN with CAN FD | Full ISO 11898-1 implementation including bit-rate switching and payload up to 64 bytes - meets automotive ECU requirements |
| BLE 5.3 Long Range | –106 dBm sensitivity at 125 kbps enables >1 km line-of-sight range in PEPS applications with low-power operation |
Applications
| Secure Car Access | Passive Entry/Start (PEPS) |
|---|---|
Use Scenario: Vehicle authentication and door/trunk unlocking without user interaction using proximity detection. IC Role / Device Role / Timing Role: Primary secure MCU managing cryptographic challenge-response, BLE ranging, and CAN FD command relay to body control module. Use Value: Enables sub-100 ms unlock latency with <3 μA deep-sleep current, meeting OEM RF response and battery-life targets. | Use Scenario: Engine start authorization via authenticated BLE handshake between fob and vehicle ECU during entry. IC Role / Device Role / Timing Role: Dual-role device: BLE 5.3 radio for secure proximity verification and FlexCAN FD for authenticated start command transmission. Use Value: Eliminates separate BLE + CAN transceivers - reduces BOM cost and PCB area while maintaining AEC-Q100 Grade 2 reliability. |
| Wireless BMS (WBMS) | Industrial Positioning |
Use Scenario: Cell voltage, temperature, and state-of-charge telemetry from battery modules transmitted wirelessly to master controller. IC Role / Device Role / Timing Role: Secure edge node MCU performing local data encryption, BLE mesh forwarding, and CAN FD gateway to central BMS. Use Value: On-chip PRINCE + EdgeLock ensures tamper-resistant telemetry; <3 μA sleep current enables multi-year battery operation. | Use Scenario: Indoor asset tracking using BLE AoA/AoD with synchronized timestamping across distributed sensor nodes. IC Role / Device Role / Timing Role: Time-critical BLE anchor node with 56-bit timestamp timer and signal frequency analyzer (SFA) for precise RF phase measurement. Use Value: Hardware-accelerated timing eliminates software jitter - achieves <1° AoA accuracy in factory automation environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar secure wireless MCU applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| KW45Z41053AFTBT | 512 KB flash (vs. 1 MB), same 48-pin HVQFN package, identical security and CAN FD features | Suitable for cost-sensitive PEPS nodes with smaller firmware footprint; no change to PCB or drivers | Select when firmware size ≤450 KB and BOM cost optimization is prioritized over future OTA update headroom |
| KW45B41Z83AFTBT | Includes integrated BLE 5.3 radio core (KW45B variant); same flash/SRAM, CAN FD, and security stack | Eliminates need for external BLE controller; higher integration but identical MCU software compatibility | Choose when full single-chip wireless solution is required - no software porting needed vs. KW45Z41083AFTBT |
Compared with KW45Z41053AFTBT, KW45Z41083AFTBT provides double flash capacity for complex OTA stacks and secure bootloader redundancy; compared with KW45B41Z83AFTBT, it separates radio and MCU domains - enabling independent firmware updates and enhanced fault containment in safety-critical systems.
Availability
KW45Z41083AFTBT is available at Aetrix Electronics and suitable for automotive PEPS systems, wireless battery management, and industrial positioning applications requiring stable component supply, AEC-Q100 compliance, and long-term lifecycle assurance.
Supply support for KW45Z41083AFTBT 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 automotive-grade security.
The KW45 product line delivers highly secure, dual-core wireless MCUs optimized for automotive access systems and industrial edge nodes - combining BLE 5.3, CAN FD, TrustZone-M, and EdgeLock Secure Enclave in a single AEC-Q100 Grade 2 package.
FAQ
What is the maximum operating temperature for KW45Z41083AFTBT?
KW45Z41083AFTBT is qualified to AEC-Q100 Grade 2 with an ambient operating temperature range of –40 °C to +105 °C. Its junction temperature rating extends to +125 °C, enabling reliable deployment in under-hood automotive modules and high-temperature industrial enclosures where thermal management is constrained.
Does KW45Z41083AFTBT support CAN FD and legacy CAN 2.0B simultaneously?
Yes, KW45Z41083AFTBT's FlexCAN module fully supports both CAN FD (per ISO 11898-1) and legacy CAN 2.0B protocols. It implements bit-rate switching, extended data length (up to 64 bytes), and flexible message filtering - allowing seamless coexistence with existing CAN 2.0B ECUs while enabling higher bandwidth for new functions in the same network.
How does the EdgeLock Secure Enclave in KW45Z41083AFTBT protect firmware updates?
KW45Z41083AFTBT uses its EdgeLock Secure Enclave to authenticate and decrypt over-the-air (OTA) firmware images using ECDSA signatures and AES-GCM. The enclave isolates key storage and crypto operations from the main M33 core, preventing extraction during update - ensuring only cryptographically signed, integrity-checked images execute post-verification.
What is the minimum power consumption of KW45Z41083AFTBT in deep sleep mode?
KW45Z41083AFTBT consumes less than 1.5 μA in Deep Power-Down mode with RTC active and retains critical context. With its Smart Power Switch enabled, sleep current drops below 100 nA - making it suitable for energy-harvesting or coin-cell-powered automotive sensors requiring multi-year operational life without maintenance.
Is KW45Z41083AFTBT pin-compatible with other KW45Z variants in the same package?
Yes, KW45Z41083AFTBT shares identical 48-pin HVQFN (7 × 7 mm) mechanical and electrical pinout with KW45Z41053AFTBT and KW45Z41082AFTBT. All share the same VDD, I/O, CAN, debug, and reset pin assignments - enabling drop-in replacement within the same package family without PCB redesign.
KW45Z41083AFTBT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 48-VFQFN Exposed Pad
- Series:
- Kinetis KW45Z
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- -
- Core Processor:
- ARM® Cortex®-M33
- Core Size:
- 32-Bit
- Speed:
- 96MHz
- Connectivity:
- CANbus, HMI, I2C, SPI, UART/USART
- Peripherals:
- DMA, PWM, WDT
- Number of I/O:
- 29
- Program Memory Size:
- 1MB (1M x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 128K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.8V ~ 3.6V
- Data Converters:
- A/D 14x16b SAR
- Oscillator Type:
- -
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
KW45Z41083AFTBT FAQ
1.How can I place an order for KW45Z41083AFTBT through Aetrix?
Please submit a Request for Quotation (RFQ) for KW45Z41083AFTBT 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 KW45Z41083AFTBT reliable?
The price and inventory of KW45Z41083AFTBT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for KW45Z41083AFTBT is usually 5 days.
3.What payment methods are accepted for KW45Z41083AFTBT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for KW45Z41083AFTBT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for KW45Z41083AFTBT?
KW45Z41083AFTBT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your KW45Z41083AFTBT 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 KW45Z41083AFTBT?
For technical support, including KW45Z41083AFTBT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your KW45Z41083AFTBT requirements.
6.How does Aetrix verify that KW45Z41083AFTBT is sourced from the original manufacturer or authorized distributors?
All KW45Z41083AFTBT 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 KW45Z41083AFTBT meets industry standards.
7.What is the process for return or replacement of KW45Z41083AFTBT?
All KW45Z41083AFTBT units undergo pre-shipment inspection (PSI). If there is an issue with KW45Z41083AFTBT, 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 KW45Z41083AFTBT part is unused and in its original packaging.
Return procedure for KW45Z41083AFTBT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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