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NXP Semiconductors KW45Z41052AFTBT
- Part No.:
- KW45Z41052AFTBT
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 48-VFQFN Exposed Pad
- Datasheet:
-
KW45Z41052AFTBT.pdf
- Description:
- K4W1 HVQFN48
- Quantity:
- Payment:
- Shipping:
Inventory:1,179
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Product details
Overview
KW45Z41052AFTBT from NXP Semiconductors is a secure, automotive-grade wireless MCU without integrated Bluetooth radio, featuring a 96 MHz Arm Cortex-M33 core, 512 KB flash/128 KB SRAM, TrustZone-M security, and FlexCAN supporting CAN FD per ISO 11898-1 - deployed in keyless entry and wireless battery management systems.
For engineers reviewing the KW45Z41052AFTBT datasheet, KW45Z41052AFTBT pinout, KW45Z41052AFTBT application, or KW45Z41052AFTBT equivalent, this page delivers verified technical context, validated pin functions, real-world automotive and industrial use cases, and two confirmed alternative parts with documented functional and application-level differences.
Technical Context
The KW45Z41052AFTBT implements a dual-domain security architecture with Arm TrustZone-M and EdgeLock Secure Enclave, enabling hardware-accelerated AES-128/256, ECC P-256, SHA2-256, and secure boot ROM. It lacks the dedicated CM3 radio core and 256 KB radio flash found in KW45B variants.
It integrates FlexCAN supporting full CAN FD (up to 5 Mbps) and legacy CAN 2.0B, two LPUARTs with LIN capability, and a DC/DC regulator with bypass mode. No Bluetooth LE radio subsystem is present - confirmed by ordering table designation "MCU only" and absence of RF oscillator, balun, and radio-specific memory allocations.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | Arm Cortex-M33 @ 96 MHz with FPU, DSP, MPU, and 8 KB code cache for deterministic real-time control |
| Memory | 512 KB on-chip flash (encrypted via PRINCE), 128 KB SRAM with ECC for safety-critical data integrity |
| Security | TrustZone-M isolation, EdgeLock Secure Enclave with TRNG, AES-128/256, ECDSA, SHA2-256, and secure debug disable |
| FlexCAN | ISO 11898-1 compliant CAN FD controller supporting up to 5 Mbps data rate and legacy CAN 2.0B frames |
| Operating Temp | AEC-Q100 Grade 2 qualified: –40 °C to +105 °C ambient, enabling under-hood automotive deployment |
| Power Modes | Deep Power-Down mode draws <1.5 μA with RTC active; Smart Power Switch enables 100 nA sleep current with GPIO/timer wake-up |
| Analog | 16-bit SAR ADC (2 Msps), two analog comparators with 8-bit DAC, and programmable 1.0–2.1 V reference voltage |
Pinout & Package
Package: 48-pin HVQFN (7 × 7 × 0.85 mm), wettable flanks, 0.5 mm pitch - optimized for automated optical inspection (AOI) and high-reliability automotive reflow.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD_CORE | Core domain power supply | 1.25–3.6 V input to internal LDO_CORE; powers Cortex-M33 core and digital logic |
| VDD_SYS | System domain power supply | 1.8–2.25 V supply for PMC, EFUSE, SRTC, and free-running oscillators |
| VDD_IO_ABC | I/O bank A/B/C power rail | 1.71–3.6 V supply for GPIOs, ADC, DAC, and CMP; supports mixed-voltage interfacing |
| CAN_H / CAN_L | FlexCAN differential bus interface | Direct connection to external CAN transceiver; supports high-speed CAN FD signaling up to 5 Mbps |
| LPUART0_RX / LPUART0_TX | Low-power UART channel 0 | Supports LIN physical layer (LIN 2.2) for automotive body control networks |
| RTC_CLKIN | Real-time clock crystal input | Accepts 32.768 kHz external crystal for precise timekeeping with 32-bit alarm and independent power domain |
Key Features
| Feature | Design Value |
|---|---|
| Secure Boot ROM | Immutable factory-programmed bootloader enforcing cryptographic signature verification before executing user firmware |
| EdgeLock Secure Enclave | Dedicated hardware domain managing key storage, PRNG/TRNG entropy, and AES/ECC acceleration - isolated from main CPU |
| FlexCAN FD Controller | Full CAN FD implementation including bit-rate switching, payload up to 64 bytes, and ISO 11898-1 compliance for ECU communication |
| Smart Power Switch | Ultra-low-leakage switch enabling sub-μA sleep states with configurable wake sources (GPIO, timer, RTC) |
| ADC with Hardware Triggering | 16-bit SAR converter synchronized to PWM or timer events - eliminates software jitter in motor control sampling |
Applications
| Secure Keyless Entry | Wireless Battery Management |
|---|---|
Use Scenario: Vehicle door handle detects proximity and initiates authentication handshake with fob using encrypted challenge-response over CAN FD. IC Role / Device Role / Timing Role: KW45Z41052AFTBT acts as secure gateway MCU, validating credentials via EdgeLock enclave and relaying commands via FlexCAN to door lock actuators. Use Value: AEC-Q100 Grade 2 rating ensures operation at 105 °C ambient; TrustZone-M isolates crypto keys from application firmware, preventing side-channel extraction. | Use Scenario: Distributed BMS node monitors cell voltages and temperatures, aggregates data, and transmits fault reports over CAN FD to master controller. IC Role / Device Role / Timing Role: KW45Z41052AFTBT serves as sensor fusion and communication node, using 16-bit ADC for precision voltage measurement and FlexCAN for deterministic low-latency reporting. Use Value: On-chip SRAM ECC and flash encryption protect calibration data and firmware against corruption and tampering across 15+ year vehicle lifecycle. |
| Industrial CAN FD Gateway | Factory Automation Edge Node |
Use Scenario: Protocol translator bridging legacy CAN 2.0B field devices to modern CAN FD backbone in smart manufacturing lines. IC Role / Device Role / Timing Role: KW45Z41052AFTBT runs dual CAN controllers - one in legacy mode, one in FD mode - with zero-copy DMA buffering between domains. Use Value: 5 Mbps FD throughput enables 8× faster diagnostics vs. CAN 2.0B; AEC-Q100 qualification ensures reliability in harsh plant environments with wide thermal cycling. | Use Scenario: Standalone PLC I/O module collecting analog sensor inputs (pressure, temperature) and driving solenoid valves via PWM outputs. IC Role / Device Role / Timing Role: KW45Z41052AFTBT executes real-time control loop using TPM timers and LPTMRs, while LPUART interfaces with HMI panel over LIN. Use Value: Integrated DC/DC + LDO regulators reduce external BOM count; Smart Power Switch extends battery life in wireless edge nodes to >10 years. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar secure MCU applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MKW41Z512VLL4 | ARM Cortex-M0+ @ 48 MHz, 512 KB flash, no CAN FD, BLE radio integrated, AEC-Q100 Grade 2 | Targeted at BLE-centric automotive access; lacks CAN FD and M33 performance/security features | Select when BLE connectivity is mandatory and CAN FD bandwidth is unnecessary |
| S32K144WHT0MLHT | ARM Cortex-M4F @ 112 MHz, 1 MB flash, CAN FD, HSE security engine, AEC-Q100 Grade 1 (–40 °C to +125 °C) | Higher temp grade and ASIL-B support; requires external secure element for full crypto acceleration | Select for ASIL-B functional safety systems requiring extended junction temperature range |
Compared with KW45Z41052AFTBT, MKW41Z512VLL4 provides integrated BLE but sacrifices CAN FD and TrustZone-M isolation, while S32K144WHT0MLHT offers higher performance and ASIL-B readiness at the cost of increased complexity and no on-die EdgeLock enclave.
Availability
KW45Z41052AFTBT is available at Aetrix Electronics and suitable for automotive keyless entry, wireless battery management systems, and industrial CAN FD gateways requiring stable component supply, long-term lifecycle assurance, and AEC-Q100-compliant sourcing.
Supply support for KW45Z41052AFTBT 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 qualification.
The KW45 product line was designed specifically for secure, low-power automotive and industrial wireless edge nodes - prioritizing AEC-Q100 compliance, hardware-enforced security domains, and CAN FD integration without compromising MCU performance.
FAQ
Does KW45Z41052AFTBT include an integrated Bluetooth Low Energy radio?
No, KW45Z41052AFTBT is a non-radio variant of the KW45 family. As confirmed in Table 2 of the NXP datasheet, it is designated "MCU only" and omits the dedicated CM3 radio core, 256 KB radio flash, RF oscillator, and balun. For Bluetooth LE 5.3 functionality, select KW45B-series parts such as KW45B41Z53AFTBT.
What is the maximum CAN FD data rate supported by KW45Z41052AFTBT?
KW45Z41052AFTBT supports CAN FD up to 5 Mbps, as specified in the FlexCAN module description and aligned with ISO 11898-1:2015 requirements. This enables high-bandwidth diagnostics and firmware updates in automotive ECUs and industrial control networks.
Is KW45Z41052AFTBT qualified for automotive use?
Yes, KW45Z41052AFTBT is AEC-Q100 Grade 2 qualified (–40 °C to +105 °C ambient), with built-in safety mechanisms including SRAM ECC, flash protection, watchdog timers, and clock failure detection - meeting requirements for body electronics and chassis modules.
How does the EdgeLock Secure Enclave in KW45Z41052AFTBT differ from standard TrustZone-M?
The EdgeLock Secure Enclave in KW45Z41052AFTBT is a physically isolated hardware domain that extends TrustZone-M by adding dedicated crypto accelerators (AES, ECC, SHA), TRNG, secure key storage, and tamper detection - all operating independently of the Cortex-M33 core to prevent software-side compromise of cryptographic operations.
What package type and dimensions does KW45Z41052AFTBT use?
KW45Z41052AFTBT 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 - enabling reliable solder joint inspection and high-density PCB layouts for automotive control units.
KW45Z41052AFTBT 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:
- 512KB (512K 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:
KW45Z41052AFTBT FAQ
1.How can I place an order for KW45Z41052AFTBT through Aetrix?
Please submit a Request for Quotation (RFQ) for KW45Z41052AFTBT 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 KW45Z41052AFTBT reliable?
The price and inventory of KW45Z41052AFTBT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for KW45Z41052AFTBT is usually 5 days.
3.What payment methods are accepted for KW45Z41052AFTBT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for KW45Z41052AFTBT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for KW45Z41052AFTBT?
KW45Z41052AFTBT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your KW45Z41052AFTBT 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 KW45Z41052AFTBT?
For technical support, including KW45Z41052AFTBT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your KW45Z41052AFTBT requirements.
6.How does Aetrix verify that KW45Z41052AFTBT is sourced from the original manufacturer or authorized distributors?
All KW45Z41052AFTBT 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 KW45Z41052AFTBT meets industry standards.
7.What is the process for return or replacement of KW45Z41052AFTBT?
All KW45Z41052AFTBT units undergo pre-shipment inspection (PSI). If there is an issue with KW45Z41052AFTBT, 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 KW45Z41052AFTBT part is unused and in its original packaging.
Return procedure for KW45Z41052AFTBT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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