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NXP Semiconductors KW45Z41053AFPBR
- Part No.:
- KW45Z41053AFPBR
- Manufacturer:
- NXP Semiconductors
- Category:
- RF Transceiver ICs
- Package:
- 40-VFQFN Exposed Pad
- Datasheet:
-
KW45Z41053AFPBR.pdf
- Description:
- IC RF TXRX+MCU BLE 40HVQFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,708
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Product details
Overview
KW45Z41053AFPBR from NXP Semiconductors is a secure, AEC-Q100 Grade 2 qualified wireless MCU featuring an Arm Cortex-M33 core (96 MHz), 512 KB flash, 128 KB SRAM, integrated FlexCAN supporting CAN FD (ISO 11898-1), and Bluetooth LE 5.3 radio subsystem - designed for automotive keyless entry and industrial wireless battery management systems.
For engineers reviewing the KW45Z41053AFPBR datasheet, KW45Z41053AFPBR pinout, KW45Z41053AFPBR application, or KW45Z41053AFPBR equivalent, this page delivers verified technical context, real-world design meaning of specifications, validated pin functions, automotive-grade safety features, and confirmed alternative options for secure wireless MCU selection.
Technical Context
The KW45Z41053AFPBR implements a dual-core architecture: a main Arm Cortex-M33 application core with TrustZone-M isolation and an independent CM3 radio controller core running at up to 64 MHz. It integrates EdgeLock™ Secure Enclave with hardware AES/ECC/SHA accelerators, PRINCE flash encryption, and secure boot ROM.
Its communication stack includes FlexCAN compliant with CAN FD (up to 5 Mbps), two LPUARTs with LIN support, two LPI2C modules, two LPSPIs, and MIPI-I3C - all accessible under secure/non-secure domains managed by TRDC. Power management includes DC/DC regulator, Smart Power Switch (<100 nA sleep current), and multiple low-power modes down to 300 nA.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | Arm Cortex-M33 @ 96 MHz with TrustZone-M, FPU, DSP, MPU, and 8 KB code cache |
| Memory | 512 KB on-chip flash (PRINCE-encrypted) + 128 KB SRAM with ECC/parity protection |
| Wireless | Bluetooth LE 5.3 radio with –106 dBm sensitivity (125 kbps LR), +10 dBm TX power, 24 simultaneous connections |
| CAN Interface | FlexCAN supporting CAN FD per ISO 11898-1, up to 5 Mbps data rate, AEC-Q100 Grade 2 qualified |
| Security | EdgeLock Secure Enclave with hardware crypto accelerators (AES-128/192/256, ECC, SHA2, Ed25519), TRNG, secure debug disable |
| Power | <5.3 mA active current @ 96 MHz; <3 μA in power-down with RTC + 32 KB SRAM retention; <100 nA Smart Power Switch sleep current |
| Temperature | –40 °C to +105 °C ambient operating range; junction rated to +125 °C; AEC-Q100 Grade 2 certified |
Pinout & Package
Package: 40-pin HVQFN (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 | 1.71–3.6 V input powering Ports A/B/C, Flash, and comparators; supports level-shifted GPIO operation |
| VDD_CORE | Core logic supply | 1.0–1.21 V regulated input for Cortex-M33 core and internal peripherals; requires external or DC/DC regulation |
| VDD_RF | RF analog supply | 1.175–3.6 V supply for 2.4 GHz transceiver oscillator and analog front-end; critical for BLE RF stability |
| PTA0 / PTA1 | GPIO / UART0_RX / UART0_TX | Multi-function pins supporting LPUART0 interface with LIN compliance; configurable as general-purpose inputs/outputs |
| PTB0–PTB15 | CAN_TX / CAN_RX / GPIO | Dedicated FlexCAN bus pins (CAN_H/CAN_L) with internal termination support; also serve as high-drive GPIO bank B |
| RTC_CLKIN | Real-time clock input | 32.768 kHz crystal oscillator input enabling precise timekeeping and wake-up from deep power-down modes |
Key Features
| Feature | Design Value |
|---|---|
| Secure Boot & Debug Disable | Immutable ROM-based boot loader enforcing signed firmware images; debug interface permanently disableable via eFuses |
| Hardware Crypto Acceleration | Dedicated engines for AES-GCM/CCM, ECDSA, Ed25519, SHA2-256/512, and ECDH - offloading CPU for OTA update integrity |
| PRINCE Flash Encryption | On-the-fly XEX-mode decryption of encrypted flash contents using unique per-device keys stored in EdgeLock enclave |
| FlexCAN FD Compliance | Full ISO 11898-1 implementation supporting classic CAN and CAN FD frames up to 64-byte payloads at 5 Mbps |
| Low-Power Timer Precision | Two 32-bit LPTMRs and one 56-bit timestamp timer with sub-microsecond resolution for deterministic sensor sampling and event logging |
Applications
| Automotive Keyless Entry | Wireless Battery Management |
|---|---|
Use Scenario: Vehicle door handle proximity detection and authentication handshake with fob. IC Role / Device Role / Timing Role: Primary secure MCU executing cryptographic challenge-response, BLE link layer, and CAN FD gateway to body control module. Use Value: Enables fast (<150 ms) passive entry response with tamper-resistant key storage and encrypted over-air session keys. | Use Scenario: Cell voltage, temperature, and state-of-charge telemetry collection across EV battery packs. IC Role / Device Role / Timing Role: Edge node MCU aggregating sensor data via ADC and comparators, encrypting payloads, and transmitting via BLE to gateway while routing diagnostics via CAN FD. Use Value: Meets ASIL-B functional safety requirements through SRAM ECC, watchdog timers, and clock failure detection - reducing BMS validation effort. |
| Industrial Building Control | Factory Automation Sensor Node |
Use Scenario: Wireless HVAC zone controllers communicating occupancy, temperature, and setpoint adjustments. IC Role / Device Role / Timing Role: BLE 5.3 host MCU managing mesh network participation, local decision logic, and secure firmware updates over-the-air. Use Value: Leverages Long Range mode (–106 dBm sensitivity) for reliable 100+ meter indoor coverage without repeaters. | Use Scenario: Vibration and thermal monitoring on rotating machinery with predictive maintenance alerts. IC Role / Device Role / Timing Role: Low-power sensing node using LPTMR-triggered ADC sampling, edge analytics via DSP instructions, and periodic BLE advertising. Use Value: Achieves >5-year battery life using Smart Power Switch (<100 nA sleep) and sub-μA wake-on-event capability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar secure wireless MCU applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| KW45Z41053AFTBR | Same silicon, 48-pin HVQFN (7 × 7 mm) package; higher pin count enables additional GPIO, UART, and SPI channels | Better suited for designs requiring more peripheral connectivity or board-level test access via extra pins | Select when layout allows larger footprint and additional I/O is needed; not pin-compatible with KW45Z41053AFPBR |
| KW45Z41083AFPBR | Same 40-pin HVQFN package but with 1 MB flash and identical 128 KB SRAM; same security and radio features | Required for applications needing larger firmware image size (e.g., multi-protocol stacks or extended OTA update partitions) | Choose when firmware exceeds 512 KB; maintains identical pinout, thermal profile, and PCB layout |
Compared with KW45Z41053AFPBR, KW45Z41053AFTBR offers expanded I/O in a larger package, while KW45Z41083AFPBR provides double flash capacity in the identical 40-pin HVQFN - enabling scalable firmware growth without board redesign.
Availability
KW45Z41053AFPBR is available at Aetrix Electronics and suitable for automotive keyless entry systems, wireless battery management systems, and industrial building control applications requiring stable component supply, AEC-Q100 qualification, and long-term lifecycle assurance.
Supply support for KW45Z41053AFPBR 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 line was engineered specifically for automotive-grade wireless control and industrial edge nodes demanding hardware-enforced security, CAN FD integration, and ultra-low-power BLE 5.3 operation - targeting PEPS, WBMS, and smart factory use cases.
FAQ
What is the maximum CAN FD data rate supported by KW45Z41053AFPBR?
KW45Z41053AFPBR supports CAN FD up to 5 Mbps per ISO 11898-1. Its FlexCAN module implements full protocol compliance including bit-rate switching, CRC field extension, and payload lengths up to 64 bytes - validated in automotive gateway reference designs and documented in the KW45 Reference Manual (KW45B41ZRM), Section 3.7.5.
Does KW45Z41053AFPBR include hardware acceleration for Elliptic Curve Cryptography?
Yes, KW45Z41053AFPBR includes dedicated hardware accelerators for ECC NIST P-192/224/256/384/521 and Curve25519 within its EdgeLock Secure Enclave. These engines accelerate ECDSA signing, ECDH key exchange, and SPAKE2+/JPAKE protocols - enabling sub-100 ms secure boot and OTA signature verification without CPU overhead.
What is the minimum supply voltage for the KW45Z41053AFPBR core domain?
The KW45Z41053AFPBR core domain (VDD_CORE) operates at a minimum supply voltage of 1.0 V in Mid Drive mode. The device supports three operational voltage ranges: Mid Drive (1.0–1.1 V), Normal Drive (1.04–1.21 V), and Safe-Mode (1.04–1.21 V at 1.15 V target), as specified in Table 10 of the KW45 Data Sheet Rev. 9.
Can KW45Z41053AFPBR operate in deep power-down mode with real-time clock functionality enabled?
Yes, KW45Z41053AFPBR supports deep power-down mode with RTC active and 32 KB SRAM retention at less than 3 μA typical current. The RTC runs from an independent 32.768 kHz oscillator and maintains timekeeping, alarm triggers, and wake-up events - essential for infrequent sensor polling in battery-powered automotive and industrial nodes.
Is KW45Z41053AFPBR qualified for automotive use under AEC-Q100?
Yes, KW45Z41053AFPBR is AEC-Q100 Grade 2 qualified (–40 °C to +105 °C ambient), with full documentation in NXP's qualification report KW45_K32W1_2P43C. This includes stress testing for thermal cycling, humidity bias, and ESD per JS-001/JS-002, confirming suitability for under-hood and cabin-mounted automotive electronics.
KW45Z41053AFPBR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- Kinetis KW45Z
- Package/Case:
- 40-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- -
- Type:
- TxRx + MCU
- RF Family/Standard:
- Bluetooth
- Protocol:
- Bluetooth v5.3
- Modulation:
- FSK, GFSK, GMSK, MSK
- Frequency:
- 2.36GHz ~ 2.4835GHz
- Data Rate (Max):
- 2Mbps
- Power - Output:
- 10dBm
- Sensitivity:
- -106dBm
- Memory Size:
- 512kB Flash, 128kB RAM
- Serial Interfaces:
- GPIO, I2C, PWM, SPI, UART
- GPIO:
- -
- Voltage - Supply:
- 0.9V ~ 2.4V, 1.175V ~ 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)
KW45Z41053AFPBR FAQ
1.How can I place an order for KW45Z41053AFPBR through Aetrix?
Please submit a Request for Quotation (RFQ) for KW45Z41053AFPBR 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 KW45Z41053AFPBR reliable?
The price and inventory of KW45Z41053AFPBR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for KW45Z41053AFPBR is usually 5 days.
3.What payment methods are accepted for KW45Z41053AFPBR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for KW45Z41053AFPBR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for KW45Z41053AFPBR?
KW45Z41053AFPBR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your KW45Z41053AFPBR 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 KW45Z41053AFPBR?
For technical support, including KW45Z41053AFPBR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your KW45Z41053AFPBR requirements.
6.How does Aetrix verify that KW45Z41053AFPBR is sourced from the original manufacturer or authorized distributors?
All KW45Z41053AFPBR 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 KW45Z41053AFPBR meets industry standards.
7.What is the process for return or replacement of KW45Z41053AFPBR?
All KW45Z41053AFPBR units undergo pre-shipment inspection (PSI). If there is an issue with KW45Z41053AFPBR, 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 KW45Z41053AFPBR part is unused and in its original packaging.
Return procedure for KW45Z41053AFPBR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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