My Inquiry
My Account
NXP Semiconductors K32W041Y
- Part No.:
- K32W041Y
- Manufacturer:
- NXP Semiconductors
- Category:
- RF Transceiver ICs
- Package:
- 40-VFQFN Exposed Pad
- Datasheet:
-
K32W041Y.pdf
- Description:
- IC RF TXRX+MCU 802.15.4 40HVQFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,000
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
K32W041Y from NXP Semiconductors is an ultra-low-power Arm® Cortex®-M4 wireless microcontroller supporting Bluetooth Low Energy 5.0 and IEEE 802.15.4 (Zigbee 3.0/Thread) protocols, operating at up to 48 MHz with 640 KB Flash and 152 KB SRAM. It integrates a 2.4 GHz transceiver with -97 dBm BLE sensitivity, 4.3 mA RX current, and deep power-down consumption of 350 nA - enabling coin-cell-powered smart locks, lighting controls, and sensor nodes.
For engineers reviewing the K32W041Y datasheet, K32W041Y pinout, K32W041Y application, or K32W041Y equivalent, this page delivers verified technical context, validated pin functions, real-world use cases for battery-constrained IoT endpoints, and confirmed alternative options for Zigbee/Thread/BLE dual-mode designs.
Technical Context
The K32W041Y implements a tightly integrated dual-protocol radio subsystem with shared baseband and MAC accelerator supporting packet formatting, CRC, auto-ACKs, and address filtering for both BLE 5.0 and IEEE 802.15.4. Its Arm Cortex-M4 core includes MPU, NVIC, SWD debug, and system tick timer - all clocked from a configurable 12–48 MHz system clock derived from internal FRO or external 32 MHz crystal.
Power management features include four low-power modes (Sleep, Deep-sleep, Power-down, Deep-power-down), with dedicated 32 kHz timers running in Power-down mode for BLE link-layer timing maintenance. The device supports antenna diversity control via ADE/ADO pins and integrates RF balun, 32.768 kHz XTAL oscillator, and ultra-low-power sleep oscillator - all essential for robust 2.4 GHz coexistence with Wi-Fi.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm Cortex-M4 @ up to 48 MHz - enables real-time BLE/Thread stack execution with hardware floating-point and DSP extensions. |
| Memory | 640 KB Flash / 152 KB SRAM - supports OTA firmware updates and concurrent network stack + application code in RAM. |
| Radio Performance | -97 dBm BLE RX sensitivity, +10 dBm TX output @ 20.3 mA - achieves >100 m range in open field with minimal BOM cost. |
| Low-Power Operation | 350 nA deep power-down current with IO wake-up - extends CR2032 battery life beyond 5 years in periodic sensor reporting. |
| Analog Peripherals | 8-channel 12-bit ADC @ 190 kS/s, dual PDM microphone interface, temperature/battery sensors - enables local sensing without external ICs. |
| Digital Interfaces | 2× I²C, 2× SPI, 2× USART, 10× PWM, ISO7816, QSPIFI - provides flexible connectivity for displays, actuators, secure elements, and external flash. |
| Security | 128/192/256-bit AES engine, SHA-1/SHA-256 accelerator, RNG, eFuse-trimmed keys - meets PSA Level 2 and SESIP requirements for secure provisioning. |
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 |
|---|---|---|
| XTAL_P / XTAL_N | 32 MHz system crystal oscillator input | Provides precise clock source for radio timing and CPU operation; internal capacitors eliminate external load caps. |
| XTAL_32K_P / XTAL_32K_N | 32.768 kHz RTC crystal input | Enables accurate timekeeping and low-power timer operation during deep-sleep and power-down modes. |
| RF_IO | 2.4 GHz RF antenna interface | Single-pin RF transceiver connection with integrated balun; requires matching network to 50 Ω antenna. |
| VDD(RADIO) / VSS(RF) | Radio supply and ground | Isolated analog power domain minimizes digital noise coupling into sensitive RF receiver path. |
| PIO0–PIO21 | Configurable GPIO with multiplexed peripherals | 22 digital I/Os support UART, SPI, I²C, PWM, ADC inputs, comparator, PDM mic, and antenna diversity control (ADE/ADO). |
| RSTN | Active-low reset input | Asynchronous hardware reset with internal pull-up; compatible with standard push-button or supervisor IC reset circuits. |
| SWCLK / SWDIO | ARM Serial Wire Debug interface | Enables full-speed programming and real-time debugging without dedicated JTAG pins; uses only two pins. |
Key Features
| Feature | Design Value |
|---|---|
| Dual-protocol radio stack support | Hardware-accelerated BLE 5.0 and IEEE 802.15.4 MAC layer enables concurrent or swappable protocol operation without host CPU overhead. |
| Ultra-low-power sleep architecture | Deep power-down mode draws just 350 nA while retaining SRAM content and enabling wake-up from any GPIO - critical for energy harvesting systems. |
| Integrated audio subsystem | Dual-channel PDM microphone interface with hardware voice activity detector reduces average current by >50% in voice-triggered applications. |
| Secure boot and runtime protection | eFuse-programmed AES keys, immutable secure boot ROM, and MPU-enforced memory isolation prevent firmware tampering and side-channel attacks. |
| Antenna diversity control | Dedicated ADE/ADO outputs drive external RF switches to select optimal antenna path - improves link reliability in obstructed environments. |
Applications
| Smart Lighting Control | Wireless Door Lock |
|---|---|
|
Use Scenario: Battery-powered LED driver node with dimming, color tuning, and occupancy sensing in residential/commercial spaces. IC Role / Device Role / Timing Role: Primary wireless MCU executing Zigbee 3.0 light control cluster, managing PWM dimming, reading ambient light/PIR sensors, and maintaining secure over-the-air updates. Use Value: 640 KB Flash stores full Zigbee stack + vendor-specific lighting logic; 350 nA deep power-down extends CR123A battery life to >3 years with daily usage. |
Use Scenario: Tamper-resistant electronic deadbolt with BLE provisioning, keypad entry, and remote lock/unlock via smartphone app. IC Role / Device Role / Timing Role: Secure BLE 5.0 endpoint with AES-256 encryption, ISO7816 interface for secure element communication, and low-power RTC for audit logging. Use Value: Integrated security accelerators enable FIPS-compliant key derivation and signing; 152 KB SRAM buffers encrypted BLE packets without external memory. |
| Industrial Sensor Node | Thermostat & HVAC Controller |
|
Use Scenario: Wireless temperature/humidity/pressure sensor deployed in factory floor or warehouse with mesh backhaul to gateway. IC Role / Device Role / Timing Role: Thread Border Router-capable endpoint with IEEE 802.15.4 PHY/MAC, 12-bit ADC for analog sensor conditioning, and DMA-driven sensor sampling. Use Value: Hardware CRC and auto-ACK reduce packet retransmission; 8-channel ADC reads multiple sensors per wakeup cycle, minimizing active time. |
Use Scenario: Programmable wall-mounted thermostat using BLE for commissioning and Thread for persistent mesh network integration with HVAC equipment. IC Role / Device Role / Timing Role: Dual-role wireless controller running both BLE 5.0 (for mobile setup) and Thread (for building-wide control), with integrated temperature sensor and comparator for local decision logic. Use Value: Single-chip solution eliminates separate BLE/Thread radios; built-in battery monitor ensures reliable low-battery alerts before system failure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar wireless MCU applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| EFR32MG21A020F1024IM32 | 2.4 GHz Silicon Labs Gecko SoC with 1024 KB Flash, 96 KB RAM, +20 dBm max TX power, but no integrated NFC or ISO7816 interface. | Better RF range and higher TX power suit outdoor gateways; lacks PDM mic interface and secure boot ROM required for consumer-grade lock certification. | Select when extended range or higher TX power is prioritized over secure element integration and ultra-low deep-sleep current. |
| CC2652RB1R | Texas Instruments SimpleLink MCU with 352 KB Flash, 80 KB RAM, integrated BAW resonator (no external 32 MHz XTAL needed), but only BLE 5.0 - no IEEE 802.15.4 support. | Reduces BOM count by eliminating crystal; limited to BLE-only networks - cannot participate in Zigbee/Thread mesh topologies. | Select for pure BLE applications where crystal-free design and TI's BLE stack maturity outweigh dual-protocol flexibility. |
Compared with EFR32MG21A020F1024IM32 and CC2652RB1R, the K32W041Y uniquely balances dual-protocol radio capability, sub-μA deep-sleep, and hardware security - making it optimal for certified, battery-operated, multi-standard IoT edge devices requiring long life and regulatory compliance.
Availability
K32W041Y is available at Aetrix Electronics and suitable for smart lighting control, wireless door locks, industrial sensor nodes, thermostat & HVAC controllers, and secure BLE/Thread endpoint designs requiring stable component supply across production lifecycles.
Supply support for K32W041Y 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 K32W series targets ultra-low-power, multi-protocol wireless edge devices - designed specifically for certified, battery-operated home/building automation endpoints requiring BLE 5.0, Zigbee 3.0, and Thread interoperability in a single chip.
FAQ
What wireless protocols does the K32W041Y support?
The K32W041Y supports Bluetooth Low Energy 5.0 and IEEE 802.15.4 (2011), enabling native implementation of Zigbee 3.0 and Thread networking stacks. It does not support proprietary 2.4 GHz protocols or sub-GHz bands. The K32W041Y radio subsystem includes hardware acceleration for MAC-layer functions common to both standards, allowing efficient dual-stack operation without external co-processors.
Does the K32W041Y include NFC functionality like the K32W061?
No, the K32W041Y does not include the integrated NTAG I2C NFC tag found on the K32W061. Pin positions LA and LB on the K32W041Y HVQFN40 package are marked "n.c." (no connect) in the official datasheet. This distinction is confirmed in Table 2 of the product data sheet, which explicitly lists "no" under NTAG for K32W041. NFC-based provisioning or tap-to-pair must be implemented externally if required.
What is the minimum supply voltage for the K32W041Y during radio transmission?
The K32W041Y operates across a 1.9 V to 3.6 V supply range. During +10 dBm transmit operation, the device draws 20.3 mA - requiring stable regulation down to 1.9 V. Below 1.9 V, radio transmission is not guaranteed, and brown-out detection triggers reset. The K32W041Y includes eight programmable voltage thresholds for precise supply monitoring during battery discharge cycles.
Can the K32W041Y run both Zigbee and Thread stacks simultaneously?
The K32W041Y hardware supports both IEEE 802.15.4 and BLE 5.0 physical layers, but its software stack implementation determines concurrency. NXP's official SDK permits either Zigbee 3.0 or Thread stack deployment - not simultaneous dual-stack operation - due to memory and real-time scheduling constraints. However, the same K32W041Y device can be reprogrammed in-field to switch between protocols using OTA updates.
What debug interface does the K32W041Y use, and is JTAG supported?
The K32W041Y uses ARM Serial Wire Debug (SWD) with SWCLK and SWDIO pins (Pins 15 and 16 on HVQFN40). It does not support standard 5-pin JTAG; SWD provides full debug, programming, and trace capabilities using only two pins plus reset and ground. The device includes 8 hardware breakpoints and 4 watchpoints, and supports Serial Wire Output (SWO) for real-time printf-style tracing without halting execution.
K32W041Y 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, Thread, Zigbee®
- 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)
K32W041Y FAQ
1.How can I place an order for K32W041Y through Aetrix?
Please submit a Request for Quotation (RFQ) for K32W041Y 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 K32W041Y reliable?
The price and inventory of K32W041Y are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for K32W041Y is usually 5 days.
3.What payment methods are accepted for K32W041Y?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for K32W041Y transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for K32W041Y?
K32W041Y orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your K32W041Y 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 K32W041Y?
For technical support, including K32W041Y datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your K32W041Y requirements.
6.How does Aetrix verify that K32W041Y is sourced from the original manufacturer or authorized distributors?
All K32W041Y 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 K32W041Y meets industry standards.
7.What is the process for return or replacement of K32W041Y?
All K32W041Y units undergo pre-shipment inspection (PSI). If there is an issue with K32W041Y, 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 K32W041Y part is unused and in its original packaging.
Return procedure for K32W041Y:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
K32W041Y Tags
-
ESP32-D0WD-V3
Espressif Systems
-
ESP8266EX
Espressif Systems
-
ESP32-S3
Espressif Systems
-
NRF24L01P-R7
Nordic Semiconductor ASA
-
NRF24L01P-R
Nordic Semiconductor ASA
-
ESP32-U4WDH
Espressif Systems
-
DA14531-00000OG2
Renesas
-
ESP32-C6FH4
Espressif Systems
-
DA14531-00000FX2
Renesas
-
NRF24L01P-T
Nordic Semiconductor ASA
-
NRF52810-QCAA-R
Nordic Semiconductor ASA
-
ESP32-S3FN8
Espressif Systems
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
