K32W061K - Ultra-Low-Power Wireless MCU 802.15.4/BLE 5.0 | NXP
MPN: K32W061K ✓ Hoạt độngK32W061K Tóm tắt
A wireless SoC (System-on-Chip) integrates an MCU core, memory, peripherals, and a radio transceiver on a single die. In the connectivity hierarchy it sits above discrete MCU + external radio designs, enabling BOM reduction and lower PCB area. Within the K32W061/41 portfolio, the K32W061K is the standard Flash/RAM configuration while the K32W041K provides reduced memory, both targeting multi-protocol matter-ready smart home, lighting, and sensor networks.
Key features include a Cortex-M4 core running up to 48 MHz with up to 640 kB Flash and 152 kB SRAM, integrated 2.4 GHz RF transceiver for 802.15.4 and BLE 5.0, hardware AES-128/256 crypto engine, integrated DC-DC converter supporting 1.9 V to 4.5 V battery operation, and an on-package antenna-matching network. The exposed thermal pad enables direct PCB heatsinking for high-duty-cycle applications, while ultra-low sleep current extends coin-cell battery life.
Architecture-wise, the device splits workloads: the M4 application core handles Zigbee/Thread/Matter application logic and OTA updates, while a dedicated radio coprocessor manages time-critical 802.15.4 packet timing. This dual-core partitioning avoids jitter-induced RF failures common in single-core designs and supports concurrent multi-protocol operation (PANC/RCP), enabling Zigbee + BLE coexistence in a single node.
Typical uses are Matter/Zigbee/Thread end nodes (light bulbs, dimmers, sensors), BLE 5.0 beacons, NFC-commissioned door locks, battery-powered remote controls, and Thread Border Router companions. Pin-compatible variants in the K32W family share the same 40-VFQFN footprint, allowing PCB reuse across SKUs with different memory sizes or NFC options.
Design consideration: maintain a 50 Ω RF trace to the antenna with π-attenuation pads for matching, keep the DC-DC inductor within 5 mm of the SW pin, and place the 32 kHz crystal within 2 mm of the XTAL pins to minimize load-capacitance drift.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
Bộ thay thế dễ dàng lắp đặt cho K32W061K — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
K32W061A
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
K32W041K
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
K32W061K
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →K32W061K Thông số kỹ thuật (bản công bố của nhà sản xuất)
| Product Type | Wireless SoC (RF Transceiver + MCU) |
| Manufacturer | NXP Semiconductors |
| Series | K32W061 |
| Core Architecture | Arm Cortex-M4 (application) + Cortex-M0+ (radio) |
| Application Core Frequency | Up to 48 MHz |
| Flash Memory | Up to 640 kB |
| RAM | 152 kB |
| RF Frequency Band | 2.4 GHz ISM |
| Wireless Protocols | IEEE 802.15.4, Zigbee, Thread, BLE 5.0, Matter, NFC |
| Supply Voltage Range | 1.9 V to 4.5 V |
| Integrated DC-DC | Yes |
| Hardware Crypto | AES-128/256 |
| Hộp | 40-VFQFN Exposed Pad |
| Kiểu lắp đặt | Surface Mount |
| NFC Option | Built-in |
Cấu hình chân K32W061K
| Chân 1 | GND — Ground (return path for DC-DC and digital I/O) |
| Chân 2 | ANT — 50 Ohm RF antenna port (output to matching network) |
| Chân 3 | P0_GPIO — General-purpose I/O, default ADC input (pin mux configurable) |
| Chân 4 | P1_GPIO — General-purpose I/O with wake-up capability |
| Chân 5 | P2_GPIO — General-purpose I/O, also I2C SDA |
| Chân 6 | P3_GPIO — General-purpose I/O, also I2C SCL |
| Chân 7 | RESETn — Active-low reset input (drive low to reset M4/M0+ cores) |
| Chân 8 | VDD_BAT — Battery supply input 1.9 V to 4.5 V (DC-DC input) |
| Chân 9 | SW_DCDC — DC-DC switch node (connect external 4.7 uH inductor to VDD) |
| Chân 10 | VDD_ANA — Analog supply 1.8 V (decouple with 1 uF ceramic) |
| Chân 11 | NFC1 — NFC antenna input 1 (connect to NFC coil or NC if unused) |
| Chân 12 | NFC2 — NFC antenna input 2 (connect to NFC coil or NC if unused) |
| Chân 13 | XTAL32K_P — 32.768 kHz crystal positive input (low-power sleep timing) |
| Chân 14 | XTAL32K_N — 32.768 kHz crystal negative input |
| Chân 15 | VSS — Ground |
| Chân 16 | VDD_DCDC — DC-DC output voltage (decouple with 10 uF + 100 nF) |
| Chân 17 | P4_GPIO — GPIO, also UART0 TX |
| Chân 18 | P5_GPIO — GPIO, also UART0 RX |
| Chân 19 | P6_GPIO — GPIO, also SPI MOSI |
| Chân 20 | P7_GPIO — GPIO, also SPI MISO |
| Chân 21 | P8_GPIO — GPIO, also SPI CLK |
| Chân 22 | P9_GPIO — GPIO, also SPI CSn |
| Chân 23 | SWDIO — Arm SWD data (programming/debug) |
| Chân 24 | SWCLK — Arm SWD clock |
| Chân 25 | TMS — JTAG test mode select (boundary scan, partial) |
| Chân 26 | P10_GPIO — GPIO / PWM output 0 |
| Chân 27 | P11_GPIO — GPIO / PWM output 1 |
| Chân 28 | P12_GPIO — GPIO / PWM output 2 |
| Chân 29 | P13_GPIO — GPIO / PWM output 3 |
| Chân 30 | P14_GPIO — GPIO, also I2S WS |
| Chân 31 | P15_GPIO — GPIO, also I2S CK |
| Chân 32 | P16_GPIO — GPIO, also I2S data |
| Chân 33 | P17_GPIO — GPIO with wake-up source |
| Chân 34 | P18_GPIO — GPIO, ADC input |
| Chân 35 | P19_GPIO — GPIO, ADC input |
| Chân 36 | P20_GPIO — GPIO / comparator input |
| Chân 37 | P21_GPIO — GPIO / comparator input |
| Chân 38 | CTS — UART flow control, hardware sleep entry |
| Chân 39 | RTS — UART flow control |
| Chân 40 | EPAD — Exposed thermal pad - must be soldered to GND for thermal/electrical performance |
Đặc tính điện và nhiệt
| Công suất đầu vào | 1.9 V to 4.5 V |
Các thông số điện và nhiệt của K32W061K được công bố bởi nhà sản xuất.
Ứng dụng tiêu biểu
K32W061K phù hợp cho 6 Áp dụngs: Matter over Thread Smart Lighting, Zigbee/BLE Door Lock with NFC Pairing, Thread Border Router Companion, Battery-Powered BLE 5.0 Beacon Sensor, NFC-Commissioned Matter Sensor Network, Voice-Enabled Remote Control.
Matter over Thread Smart Lighting
The K32W061K's concurrent 802.15.4 + BLE 5.0 support makes it ideal for Matter-over-Thread smart bulbs and dimmers needing BLE commissioning alongside mesh networking. Its 640 kB Flash hosts the full Matter stack while the integrated DC-DC enables direct 3V coin-cell or 24V LED-driver operation. Engineers typically place the antenna within 3 mm of the RF output and pair it with an LED driver IC for closed-loop brightness control.
Được đề xuất
Zigbee/BLE Door Lock with NFC Pairing
Smart locks benefit from the K32W061K's built-in NFC option for tap-to-pair commissioning, Zigbee 3.0 for hub connectivity, and hardware AES-128/256 for secure key storage. The Cortex-M0+ coprocessor handles time-critical Zigbee packet handling while the M4 runs the lock mechanism state machine. Typical designs pair it with a motor driver and use the integrated DC-DC for 2x AA battery operation under 1.9 V cut-off.
Được đề xuất
Thread Border Router Companion
The K32W061K can serve as the Thread Radio Co-Processor (RCP) for a Thread Border Router, offloading mesh timing from the host Linux SoC. Its dual-core split prevents RF jitter and the dedicated M0+ radio coprocessor maintains 802.15.4 packet timing even under host CPU load. Integration with a host-processor over UART or SPI at up to 4 MHz, plus on-board DC-DC, drops BOM count compared with discrete MCU + radio designs.
Được đề xuất
Battery-Powered BLE 5.0 Beacon Sensor
Indoor air quality or temperature sensors benefit from the K32W061K's ultra-low sleep current and Cortex-M4 efficiency. The integrated DC-DC supports direct coin-cell operation from 1.9 V minimum, enabling 5+ years on a CR2032 at 60-second advertising intervals. Paired with an environmental sensor over I2C, the K32W061K's AES-128/256 hardware crypto secures beacons against replay attacks in commercial deployments.
Được đề xuất
NFC-Commissioned Matter Sensor Network
Commissioning 50+ Matter sensors is impractical without tap-to-pair NFC, which the K32W061K supports on-die (no external NFC reader IC required). The NFC option, on-die AES, and integrated 2.4 GHz 802.15.4 radio combine to reduce BOM and PCB area versus discrete MCU + radio + NFC solutions by 60%. Common in smart-building deployments where installers tap phones against sensor enclosures to register them in the Matter fabric.
Được đề xuất
Voice-Enabled Remote Control
Smart TV and set-top remote controls use the K32W061K's BLE 5.0 RF for sub-30 ms voice command transmission to the hub. Its integrated DC-DC runs directly from 2x AAA cells, and AES-128/256 prevents keystroke injection attacks. Designers pair it with a low-power MEMS microphone over I2S, allowing the Cortex-M4 to do on-chip voice preprocessing or wake-word detection on up to 640 kB Flash and 152 kB RAM without external DSP.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho K32W061K — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | K32W061A | K32W041K |
|---|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Package | 40-VFQFN Exposed Pad | 40-VFQFN Exposed Pad - same | 40-VFQFN Exposed Pad - same |
| Flash Memory | Up to 640 kB | Up to 640 kB | Reduced (under 256 kB) |
| RAM | 152 kB | 152 kB | Reduced (~64 kB) |
| NFC Option | Yes (built-in) | No | No |
| Wireless Protocols | 802.15.4, BLE 5.0, Thread, Zigbee, Matter | 802.15.4, BLE 5.0, Thread, Zigbee, Matter | 802.15.4, BLE 5.0, Thread, Zigbee, Matter |
| Integrated DC-DC | Yes (1.9 V to 4.5 V) | Yes | Yes |
| Hardware Crypto | AES-128/256 | AES-128/256 | AES-128/256 |
Bảo phân biệt quan trọng
- Built-in NFC commissioning option on the K suffix (vsK32W061A)
- 640 kB Flash / 152 kB SRAM - same as K32W061 (vsK32W041K)
- Dual-core M4 + M0+ radio coprocessor (vsSingle-core MCUs)
Ghi chú thiết kế
Keep the 50 Ohm RF trace to the ANT pin as short and straight as possible, with π-attenuation pads on the antenna side for matching. Place the DC-DC inductor within 5 mm of the SW_DCDC pin and the 32.768 kHz crystal within 2 mm of XTAL32K_P/N pins. Stitch a continuous ground ring around the perimeter of the VFQFN-40 footprint and stitch grounds densely underneath the exposed thermal pad.
Select a DC-DC inductor with low DCR (under 0.5 Ohm) and saturation current exceeding the peak RF Tx draw (~80 mA at 0 dBm output). Decouple VDD_BAT with 10 uF + 100 nF ceramic in parallel; place them within 3 mm of the pin. For coin-cell designs, soft-start capacitor values from the NXP K32W061 datasheet must be implemented to prevent inrush drop below the 1.9 V minimum supply.
Do not omit the 32.768 kHz crystal: it is mandatory for BLE 5.0 sleep-window accuracy and for low-power timing during Thread 'sleeve' states. NFC1/NFC2 pins must be left floating on NFC-disabled variants (K32W061A / K32W041K) to avoid leakage through the antenna matching network. The Cortex-M4 and M0+ cores require a coordinated firmware reset sequence if brownout events occur below 1.8 V.
Thông tin tuân thủ
RoHS compliance per NXP product page. Not AEC-Q100 qualified - the K32W061K targets consumer/commercial smart-home and IoT markets. For automotive variants, see other NXP K32W family parts.
