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NXP Semiconductors MKW34A512VFT4
- Part No.:
- MKW34A512VFT4
- Manufacturer:
- NXP Semiconductors
- Category:
- RF Transceiver ICs
- Package:
- 48-VFQFN Exposed Pad
- Datasheet:
-
MKW34A512VFT4.pdf
- Description:
- IC RF TXRX+MCU BLE 48HVQFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,156
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Product details
Overview
MKW34A512VFT4 from NXP Semiconductors is an ultra-low-power, AEC Q100 Grade 2 automotive-qualified Bluetooth® Low Energy 5.0 wireless microcontroller featuring a 48 MHz Arm® Cortex®-M0+ core, 256 KB flash + 256 KB FlexNVM, 64 KB SRAM, and integrated 2.4 GHz radio supporting up to 8 simultaneous BLE connections - deployed in digital key, wireless firmware update, and automotive sensor telemetry systems.
For engineers reviewing the MKW34A512VFT4 datasheet, MKW34A512VFT4 pinout, MKW34A512VFT4 application, or MKW34A512VFT4 equivalent, this page delivers verified technical context, exact package mapping (48-pin "Wettable" HVQFN, 7×7 mm), confirmed low-power modes (VLLS0 @ 258 nA), BLE 5.0 Link Layer hardware support, and real-world alternative selection guidance for automotive embedded designs.
Technical Context
The MKW34A512VFT4 integrates a dedicated Bluetooth LE 5.0 Link Layer hardware accelerator with 1 Mbps PHY support and concurrent Generic FSK modulation (250/500/1000 kbps), enabling deterministic packet handling without CPU intervention. Its RF subsystem includes an on-chip balun and single-ended bidirectional RF port, reducing external component count while maintaining –95 dBm BLE Rx sensitivity and programmable Tx output from –30 to +5 dBm.
Power architecture centers on a dual-mode DC-DC converter (Buck/Bypass) and nine MCU low-power modes - including VLLS0 at 258 nA - optimized for coin-cell operation. The device implements 8 KB FlexRAM for EEPROM emulation and excludes FlexCAN and second LPUART, distinguishing it from KW36A/KW35A variants per official orderable parts table.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm Cortex-M0+, up to 48 MHz - enables real-time BLE stack execution with low cycle-per-instruction overhead. |
| Memory | 256 KB program flash + 256 KB FlexNVM + 64 KB SRAM + 8 KB FlexRAM - supports secure over-the-air updates and EEPROM emulation without external storage. |
| Radio Performance | BLE 5.0 compliant; –95 dBm sensitivity @ 1 Mbps; –30 to +5 dBm programmable Tx power - ensures robust link budget in automotive cabin environments. |
| Low-Power Modes | VLLS0 current = 258 nA; typical Rx = 6.3 mA (DC-DC buck, 3.6 V); typical Tx = 5.7 mA @ 0 dBm - enables multi-year battery life in wireless sensors. |
| Operating Range | 1.71–3.6 V supply; –40 to +105 °C ambient; AEC Q100 Grade 2 qualified - meets automotive under-hood and infotainment zone requirements. |
| Peripherals | 2× SPI, 2× I²C, 1× LPUART, 16-bit ADC, 6-bit CMP, RTC, TPMs, LPTMR, PIT - sufficient for sensor fusion, actuator control, and LIN-compliant diagnostics. |
| Security | AES-128 hardware accelerator, TRNG, 80-bit unique ID, 40-bit MAC sub-address, LE Secure Connections - fulfills automotive data integrity and device identity requirements. |
Pinout & Package
Package: 48-pin "Wettable" HVQFN, 7×7 mm body, 0.5 mm pitch - designed for automated optical inspection (AOI) and high-reliability solder joint formation in automotive PCB assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD_0, VDD_1, VDDA | Analog & digital supply rails | Accept 1.71–3.6 V; require local decoupling for RF stability and ADC accuracy. |
| VDD_RF1, VDD_RF2, VDD_RF3 | RF subsystem supplies | Must be independently filtered; support 1.5–3.6 V when DC-DC bypassed. |
| RF_IN/OUT | Single-ended bidirectional RF port | Connects directly to antenna via matching network; uses internal balun - no external balun required. |
| XTAL1/XTAL2 | 32 MHz crystal oscillator terminals | Support BLE 5.0 timing accuracy; require 32 MHz fundamental-mode crystal with load capacitance per datasheet spec. |
| RTC_XTAL1/RTC_XTAL2 | 32.768 kHz crystal oscillator terminals | Enable precise BLE advertising interval timing and RTC wake-up during deep sleep. |
| SWD_CLK/SWD_DIO | Serial Wire Debug interface | Two-pin debug access for programming and real-time trace; compatible with standard ARM SWD tools. |
| PTE0–PTE31, PTB0–PTB15, etc. | GPIO with multiplexed peripherals | 25 configurable digital I/O pins in 48-pin package; support IRQ, wake-up, and peripheral function remapping. |
Key Features
| Feature | Design Value |
|---|---|
| BLE 5.0 Link Layer Hardware | Offloads connection management, encryption, and packet scheduling from CPU - reduces latency and extends battery life in multi-connection scenarios. |
| On-Chip Balun + Single-Ended RF Port | Eliminates need for external balun and differential matching components - cuts BOM cost and PCB area by ~30% vs discrete RF front-end solutions. |
| DC-DC Buck Mode Operation | Reduces peak Rx/Tx current to 6.3/5.7 mA at 3.6 V - enables direct use of CR2032 coin cell for >2-year operation in periodic sensor beaconing. |
| FlexRAM EEPROM Emulation | 8 KB on-chip non-volatile memory with wear-leveling support - avoids external serial EEPROM and simplifies firmware update rollback logic. |
| AEC Q100 Grade 2 Qualification | Validated for –40 to +105 °C operation with automotive-grade reliability testing - suitable for body control modules and door module applications. |
Applications
| Digital Key System | Wireless Sensor Node |
|---|---|
Use Scenario: Smartphone-based vehicle unlock and personalization using BLE proximity detection and encrypted challenge-response handshake. IC Role / Device Role / Timing Role: Standalone BLE SoC executing full host stack and cryptographic operations; maintains precise advertising interval timing via 32.768 kHz RTC oscillator. Use Value: Eliminates need for separate MCU + transceiver; leverages VLLS0 mode (258 nA) for always-on proximity monitoring with <1 µA average current. | Use Scenario: Tire pressure monitoring system (TPMS) or cabin air quality sensor transmitting periodic BLE advertisements with sensor data. IC Role / Device Role / Timing Role: Integrated sensor interface MCU + BLE radio; ADC reads analog sensor outputs, TPM triggers periodic sampling, LPUART interfaces with external sensors. Use Value: Single-chip solution reduces size/cost vs MCU + discrete BLE module; DC-DC buck mode enables CR2032 operation for 5+ years. |
| Over-the-Air Firmware Update | Automotive Diagnostic Interface |
Use Scenario: Secure wireless firmware patch delivery to electronic control units (ECUs) via authenticated BLE connection. IC Role / Device Role / Timing Role: BLE bootloader co-processor; AES-128 accelerator verifies firmware signature; FlexNVM stores dual-bank images for safe rollback. Use Value: Prevents bricking during update; 512 KB total flash (256 KB ×2) allows atomic image swap without external memory. | Use Scenario: Wireless diagnostic adapter connecting technician tablets to CAN/LIN networks via BLE bridge functionality. IC Role / Device Role / Timing Role: BLE-to-serial bridge; LPUART handles LIN physical layer framing; GPIO controls LIN transceiver enable; BLE manages tablet link. Use Value: Supports ISO 14230 KWP2000 and ISO 15765 UDS protocols over BLE; operates across full automotive temperature range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar wireless microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MKW36A512VFT4 | Includes FlexCAN module and second LPUART; same 48-pin "Wettable" HVQFN package and memory map. | Required for CAN FD integration into vehicle networks; supports dual UART for LIN + BLE bridging. | Select when CAN FD bus connectivity or dual UART is mandatory - adds ~$0.35 BOM cost but retains pin compatibility. |
| MKW35A512VFT4 | Omits FlexRAM and FlexCAN; retains 512 KB flash but replaces FlexNVM with 8 KB program acceleration RAM. | Suitable for host-controlled BLE modem applications where EEPROM emulation is unnecessary. | Choose for cost-sensitive host-MCU architectures needing only BLE radio offload - no FlexRAM means external EEPROM required for parameter storage. |
Compared with MKW34A512VFT4, MKW36A512VFT4 adds CAN FD and dual UART at identical footprint and voltage specs, while MKW35A512VFT4 trades FlexRAM for larger program RAM but removes EEPROM emulation capability - making MKW34A512VFT4 optimal for standalone automotive sensors requiring persistent configuration storage.
Availability
MKW34A512VFT4 is available at Aetrix Electronics and suitable for automotive digital key systems, wireless sensor telemetry, and over-the-air firmware update modules requiring stable component supply, AEC Q100 compliance, and long-term lifecycle assurance.
Supply support for MKW34A512VFT4 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 headquarters in Eindhoven, Netherlands.
The MKW34A512VFT4 belongs to NXP's Kinetis W-series wireless MCUs, engineered specifically for ultra-low-power, AEC Q100-compliant automotive BLE applications - emphasizing secure wireless human-machine interface and embedded telemetry.
FAQ
What is the maximum number of simultaneous Bluetooth LE connections supported by MKW34A512VFT4?
MKW34A512VFT4 supports up to 8 simultaneous Bluetooth LE hardware connections in any master/slave combination, enabled by its dedicated BLE 5.0 Link Layer hardware accelerator. This capability is confirmed in the MKW36A/35A/34A Data Sheet Rev. 9, Section 2.2, and applies identically to MKW34A512VFT4 as part of the KW34A family. The hardware connection limit is independent of software stack implementation and ensures deterministic timing for automotive use cases like multi-device digital key handover.
Does MKW34A512VFT4 include CAN FD support?
No, MKW34A512VFT4 does not include CAN FD support. According to the official Orderable Parts Table in the MKW36A/35A/34A Data Sheet Rev. 9, MKW34A512VFT4 is explicitly marked "N" for CAN FD qualification, unlike MKW36A512VFT4 which is marked "Y". The FlexCAN module is exclusive to KW36A devices; MKW34A512VFT4 omits this peripheral entirely, making it unsuitable for direct CAN bus integration but optimized for BLE-only or BLE-plus-sensor applications.
What package type and dimensions does MKW34A512VFT4 use?
MKW34A512VFT4 uses a 48-pin "Wettable" HVQFN package with 7×7 mm body size and 0.5 mm pitch, as specified in the Orderable Parts Table and Package Drawing 98ASA01307D1. This variant features chamfered leads for reliable automated optical inspection (AOI) and enhanced solder joint reliability in automotive manufacturing - distinct from the 48-pin LQFN used by MKW36A512VHT4 and the 40-pin HVQFN used by MKW34A512VFP4.
How much on-chip memory does MKW34A512VFT4 provide for firmware and data storage?
MKW34A512VFT4 provides 256 KB of program flash memory, 256 KB of FlexNVM (for data logging or secondary firmware images), 64 KB of SRAM, and 8 KB of FlexRAM configured for EEPROM emulation. This memory architecture is confirmed in the "MCU and Memories" section of the MKW36A/35A/34A Data Sheet Rev. 9 and differentiates MKW34A512VFT4 from MKW35A512VFT4 (which replaces FlexNVM/FlexRAM with 512 KB flash and 8 KB program acceleration RAM) and MKW36A512VFT4 (which retains identical memory but adds FlexCAN).
Is MKW34A512VFT4 qualified for automotive applications?
Yes, MKW34A512VFT4 is AEC Q100 Grade 2 qualified, rated for operation from –40 °C to +105 °C ambient temperature, and validated for automotive reliability per the official Orderable Parts Table. This qualification covers thermal cycling, humidity testing, and ESD robustness - confirming suitability for under-dash, door module, and center console applications where MKW34A512VFT4 serves as the primary BLE interface controller.
MKW34A512VFT4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- Kinetis KW34A
- Package/Case:
- 48-VFQFN Exposed Pad
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- TxRx + MCU
- RF Family/Standard:
- Bluetooth
- Protocol:
- Bluetooth v5.0
- Modulation:
- FSK, GFSK, MSK
- Frequency:
- 2.4GHz
- Data Rate (Max):
- 1Mbps
- Power - Output:
- 5dBm
- Sensitivity:
- -95dBm
- Memory Size:
- 265kB Flash, 64kB RAM
- Serial Interfaces:
- I2C, SPI, UART
- GPIO:
- -
- Voltage - Supply:
- 1.71V ~ 3.6V
- Current - Receiving:
- 6.3mA
- Current - Transmitting:
- 5.7mA
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Supplier Device Package:
- 48-HVQFN (7x7)
MKW34A512VFT4 FAQ
1.How can I place an order for MKW34A512VFT4 through Aetrix?
Please submit a Request for Quotation (RFQ) for MKW34A512VFT4 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 MKW34A512VFT4 reliable?
The price and inventory of MKW34A512VFT4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MKW34A512VFT4 is usually 5 days.
3.What payment methods are accepted for MKW34A512VFT4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MKW34A512VFT4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MKW34A512VFT4?
MKW34A512VFT4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MKW34A512VFT4 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 MKW34A512VFT4?
For technical support, including MKW34A512VFT4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MKW34A512VFT4 requirements.
6.How does Aetrix verify that MKW34A512VFT4 is sourced from the original manufacturer or authorized distributors?
All MKW34A512VFT4 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 MKW34A512VFT4 meets industry standards.
7.What is the process for return or replacement of MKW34A512VFT4?
All MKW34A512VFT4 units undergo pre-shipment inspection (PSI). If there is an issue with MKW34A512VFT4, 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 MKW34A512VFT4 part is unused and in its original packaging.
Return procedure for MKW34A512VFT4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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