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NXP Semiconductors K32W061Z
- Part No.:
- K32W061Z
- Manufacturer:
- NXP Semiconductors
- Category:
- RF Transceiver ICs
- Package:
- 40-VFQFN Exposed Pad
- Datasheet:
-
K32W061Z.pdf
- Description:
- IC RF TXRX+MCU 802.15.4 40HVQFN
- Quantity:
- Payment:
- Shipping:
Inventory:986
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Product details
Overview
K32W061Z from NXP Semiconductors is an ultra-low-power Arm® Cortex®-M4 wireless microcontroller supporting Zigbee 3.0, Thread, and Bluetooth Low Energy 5.0 protocols. It integrates a 2.4 GHz IEEE 802.15.4 transceiver, a +11 dBm BLE 5.0 transceiver with -97 dBm sensitivity, 640 KB Flash, 152 KB SRAM, and an embedded NFC Tag (NTAG I2C) for secure proximity interaction in battery-powered smart locks and sensors.
For engineers reviewing the K32W061Z datasheet, K32W061Z pinout, K32W061Z application, or K32W061Z equivalent, this device delivers verified dual-stack wireless coexistence, deep power-down current of 350 nA, integrated RF balun and 32 MHz XTAL oscillator, and hardware-accelerated AES-256/SHA-256 for secure OTA updates in constrained IoT edge nodes.
Technical Context
The K32W061Z implements a tightly coupled dual-radio architecture: one 2.4 GHz transceiver compliant with both IEEE 802.15.4-2011 and Bluetooth LE 5.0 PHY/MAC layers, with antenna diversity control (ADE/ADO pins) and configurable TX power (0 to +11 dBm). Its Arm Cortex-M4 core runs at up to 48 MHz and includes a Memory Protection Unit (MPU), Serial Wire Debug (SWD), and system tick timer.
On-chip peripherals include a 12-bit 8-channel ADC (190 ksamples/s), dual PDM microphone interface with hardware voice activity detection, two I²C buses (one supporting ISO7816 smart card interface), Quad SPIFI for external flash, and a dedicated low-power 32.768 kHz RTC timer that maintains timing reference across power-down cycles for BLE link-layer continuity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm Cortex-M4 @ 48 MHz with MPU, NVIC, SWD debug, and system tick timer |
| Wireless Protocols | Zigbee 3.0, Thread, Bluetooth LE 5.0 (8 simultaneous connections, 2 Mb/s high-data-rate mode) |
| Memory | 640 KB embedded Flash (supports OTA updates) and 152 KB SRAM |
| Radio Performance | BLE RX sensitivity: -97 dBm; IEEE 802.15.4 RX sensitivity: -100 dBm; TX power: +11 dBm max (20.3 mA) |
| Power Modes | Deep power-down current: 350 nA (wakeup on GPIO); Sleep/Deep-sleep with 32 kHz FRO/XTAL timers |
| Analog Peripherals | 12-bit 8-channel ADC (190 ksamples/s), dual-channel PDM interface with VAD, analog comparator, temp/battery sensors |
| Security | Hardware AES-128/192/256, SHA-1/SHA-256 accelerators, 128-bit eFuse key storage, NTAG I2C (NFC Forum Type 2) |
Pinout & Package
Package: HVQFN40 (6 × 6 mm, 0.5 mm pitch), lead-free and RoHS compliant; junction temperature range: −40 °C to +125 °C.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RF_IO | RF Transceiver Interface | Single-pin 2.4 GHz antenna connection with integrated balun; supports antenna diversity via ADE/ADO outputs |
| LA / LB | NFC Antenna Interface | Dedicated differential inputs for external NFC antenna; present only on K32W061Z (not K32W041) |
| XTAL_P / XTAL_N | 32 MHz System Clock | Drives main CPU/radio clock; internal capacitors eliminate need for external load caps |
| XTAL_32K_P / XTAL_32K_N | 32.768 kHz RTC Clock | Enables precise low-power timing for BLE sleep clock and RTC alarm wake-up |
| VDD(RADIO) / VSS(RF) | RF Power Domain | Isolated analog supply and ground for radio section to minimize noise coupling into digital logic |
| PIO0–PIO21 | Configurable GPIO | Up to 22 digital I/Os with multiple alternate functions including USART, SPI, I²C, PWM, ADC, PDM, ISO7816 |
| RSTN | Active-Low Reset Input | Asynchronous reset pin; requires external pull-up; TRST must be tied to GND |
| VDDE | I/O Supply Voltage | 1.9–3.6 V tolerant IO bank; supports mixed-voltage interfacing with external sensors/peripherals |
Key Features
| Feature | Design Value |
|---|---|
| Dual-Stack Wireless Coexistence | Single-die integration of BLE 5.0 and IEEE 802.15.4 radios with shared MAC accelerator, CRC engine, and packet formatting logic reduces BOM and simplifies protocol switching |
| Ultra-Low-Power Operation | 350 nA deep power-down with GPIO wakeup; 4.3 mA BLE receive current; 32 kHz free-running oscillator enables sub-second wake-up latency without external crystal |
| Integrated NFC Tag | On-chip NTAG I2C (NFC Forum Type 2) provides secure out-of-band provisioning, firmware authentication, and user-initiated pairing without additional ICs |
| Audio-Optimized Peripherals | Dual-channel PDM interface with hardware voice activity detection (VAD) offloads CPU during always-on voice sensing, reducing average power in smart speaker wake-word applications |
| Hardware Security Acceleration | Dedicated AES-256 and SHA-256 engines enable authenticated OTA updates and secure boot in <10 ms per 16-byte block, eliminating software crypto bottlenecks |
Applications
| Smart Lock Access Control | Thread/Zigbee Lighting Node |
|---|---|
Use Scenario: Battery-powered door lock with BLE provisioning, Zigbee/Thread network joining, and NFC tap-to-pair for guest access. IC Role / Device Role / Timing Role: Primary wireless SoC handling BLE link layer, Zigbee stack execution, NTAG-based secure credential exchange, and real-time motor control via PWM outputs. Use Value: Enables >5-year coin-cell operation using deep power-down between BLE advertisements and NFC polling, while maintaining sub-100 ms unlock latency via hardware RTC wake-up. | Use Scenario: Dimmable LED fixture with multi-protocol support for commissioning via smartphone (BLE) and control via home hub (Thread/Zigbee). IC Role / Device Role / Timing Role: Central controller managing RGBW LED drivers via 10-channel PWM, ambient light sensing via ADC, and synchronized group lighting via IEEE 802.15.4 MAC timestamping. Use Value: Eliminates external protocol bridge ICs; hardware MAC accelerator ensures deterministic 15.4 frame timing for flicker-free dimming synchronization across mesh networks. |
| Wireless Sensor Hub | Secure Smart Thermostat |
Use Scenario: Multi-sensor node aggregating temperature, humidity, motion, and occupancy data for HVAC optimization. IC Role / Device Role / Timing Role: Sensor fusion processor with 8-channel ADC, dual PDM mic inputs for acoustic occupancy detection, and BLE/Thread dual-role networking. Use Value: Hardware VAD and DMA-linked ADC sampling reduce active CPU time by >70%, extending 2xAA battery life to 3+ years in intermittent reporting mode. | Use Scenario: Wi-Fi–isolated thermostat requiring secure local control via BLE and cloud sync via Thread border router. IC Role / Device Role / Timing Role: Secure edge node executing encrypted sensor reads (temp/battery), BLE OTA updates, and Thread network layer with hardware AES acceleration. Use Value: eFuse-stored AES keys and SHA-256 signature verification prevent unauthorized firmware injection; NTAG enables tamper-evident field service authentication. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar wireless microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| EFR32MG21A020F1024IM32 | Higher RF output (+20 dBm), no integrated NFC, larger 5×5 mm QFN48 package, 1024 KB Flash | Better range-critical applications (e.g., whole-home coverage); lacks NFC-based provisioning and PDM audio interface | Select when extended RF range or larger code space outweighs NFC and audio feature requirements |
| CC2652R1F | Single-protocol BLE + IEEE 802.15.4 (no Zigbee/Thread stack pre-integrated), 352 KB Flash, no NTAG, 7×7 mm QFN48 | Requires external stack licensing for Zigbee/Thread; lower memory limits complex multi-stack deployments | Choose for cost-sensitive BLE-only designs where protocol flexibility is managed externally |
Compared with EFR32MG21A020F1024IM32 and CC2652R1F, the K32W061Z uniquely combines certified multi-stack firmware, embedded NFC, and PDM audio hardware in a compact 6×6 mm HVQFN40 - enabling single-chip, coin-cell-powered smart home endpoints without external security or audio companion ICs.
Availability
K32W061Z is available at Aetrix Electronics and suitable for smart lock access control, Thread/Zigbee lighting nodes, wireless sensor hubs, and secure smart thermostats requiring stable component supply across multi-year production cycles.
Supply support for K32W061Z 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 focused on secure connectivity solutions for automotive, industrial, and IoT markets, with deep expertise in wireless MCUs and trusted execution environments.
The K32W series targets ultra-low-power, multi-protocol IoT edge devices - designed specifically to unify Zigbee, Thread, and BLE 5.0 stacks with hardware security and NFC provisioning in a single die for certified smart home product development.
FAQ
What wireless protocols does the K32W061Z natively support?
The K32W061Z natively supports Zigbee 3.0, Thread, and Bluetooth Low Energy 5.0 protocols with certified, pre-integrated protocol stacks. Its dual-radio architecture shares a single 2.4 GHz transceiver and MAC accelerator, enabling concurrent or time-sliced operation without external RF switches or protocol bridges. This eliminates inter-protocol interference and reduces system-level timing complexity in multi-standard IoT gateways and end nodes.
Does the K32W061Z include NFC functionality, and how is it implemented?
Yes, the K32W061Z integrates an NFC Forum Type 2-compliant NTAG I2C interface, accessible via dedicated LA/LB pins for external antenna connection. Unlike discrete NFC tags, this embedded NTAG operates over I²C and supports secure credential storage, firmware authentication, and out-of-band pairing - all managed directly by the K32W061Z's Cortex-M4 without host processor intervention. The K32W041 variant omits this feature.
What is the lowest achievable power consumption mode for the K32W061Z, and what peripherals remain active?
The K32W061Z achieves 350 nA deep power-down current with wake-up capability on any GPIO. In this mode, the CPU, Flash, SRAM, and most peripherals are powered off; only the GPIO interrupt controller, 32 kHz free-running oscillator (FRO), and dedicated low-power timers remain active. The RTC can maintain timekeeping and generate alarms at 1 ms resolution, enabling precise BLE advertising interval timing across sleep cycles without external components.
How does the K32W061Z handle audio input for voice-activated applications?
The K32W061Z includes a dedicated dual-channel PDM digital microphone interface with hardware-based voice activity detection (VAD). It accepts PDM0_DATA/PDM1_DATA streams, applies real-time VAD filtering, and triggers interrupts only on detected speech - bypassing CPU involvement during silence. Combined with 16-entry FIFOs and DMA linkage to SRAM, this reduces average power by >70% compared to continuous PCM sampling in always-listening smart speaker nodes.
What security features are hardware-accelerated in the K32W061Z?
The K32W061Z includes dedicated hardware accelerators for AES-128/192/256 encryption/decryption, SHA-1 and SHA-256 hashing, and a true random number generator (TRNG). These operate independently of the Cortex-M4 core and support authenticated OTA firmware updates, secure boot, and TLS handshake acceleration. Keys are stored in 128-bit eFuse with write-protection, and the integrated NTAG provides tamper-resistant credential storage for NFC-based provisioning.
K32W061Z Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- 40-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- TxRx + MCU
- RF Family/Standard:
- 802.15.4, Bluetooth
- Protocol:
- Bluetooth v5.0
- Modulation:
- -
- Frequency:
- 2.4GHz
- Data Rate (Max):
- 2Mbps
- Power - Output:
- 11.2dBm
- Sensitivity:
- -101.3dBm
- Memory Size:
- 640kB Flash, 152kB SRAM
- Serial Interfaces:
- I2C, SPI, PWM, UART
- GPIO:
- 22
- Voltage - Supply:
- 1.9V ~ 3.6V
- Current - Receiving:
- 4.3mA
- Current - Transmitting:
- 7.4mA ~ 20.3mA
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 40-HVQFN (6x6)
K32W061Z FAQ
1.How can I place an order for K32W061Z through Aetrix?
Please submit a Request for Quotation (RFQ) for K32W061Z 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 K32W061Z reliable?
The price and inventory of K32W061Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for K32W061Z is usually 5 days.
3.What payment methods are accepted for K32W061Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for K32W061Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for K32W061Z?
K32W061Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your K32W061Z 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 K32W061Z?
For technical support, including K32W061Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your K32W061Z requirements.
6.How does Aetrix verify that K32W061Z is sourced from the original manufacturer or authorized distributors?
All K32W061Z 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 K32W061Z meets industry standards.
7.What is the process for return or replacement of K32W061Z?
All K32W061Z units undergo pre-shipment inspection (PSI). If there is an issue with K32W061Z, 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 K32W061Z part is unused and in its original packaging.
Return procedure for K32W061Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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