NXP launches K32W061/41 wireless MCUs on Apr 30, 2020


The K32W061/41 portfolio is designed to power the next generation of ultra-low-current multiprotocol wireless devices, supporting Zigbee 3.0/Thread/IEEE 802.15.4 and Bluetooth Low Energy 5.0. It includes several low-power modes and ultra-low TX and RX power consumption, which enables devices powered by K32W061/41 to have extended battery life. With high RX sensitivity and configurable TX output power, K32W061/41 offers reliable and robust communications performance.

K32W061/41 is powered by an Arm® Cortex®-M4 MCU and with 640 KB on-board flash and 152 KB SRAM, has enough room and flexibility for complex applications and over-the-air (OTA) upgrade capability without external memory. It has a rich set of MCU peripherals and multiple serial communication interfaces for embedded connected applications and a quad serial flash memory controller, SPIFI, that can be used to extend non-volatile memory.


Key Selling Points

Block Diagram


CPU and MemoryRF performance/power consumption
  • Up to 48MHz Cortex-M4
  • 640 kB flash, 152 kB RAM and 128 kB ROM
  • NFC NTAG Option with EEPROM(K32W061 only)
  • Quad-SPI for data storage in NVM
  • Support of Zigbee 3.0, Thread, and IEEE 802.15.4 and Bluetooth Low Energy 5.0
  • -100 dBm RX sensitivity
  • up to 11dBm TX power
  • RX 4.3mA, DC/DC on at 3V
  • TX 7.4mA @ 0dBm, 20.3mA @ 10dBm
  • numerous and flexible low-power modes, Power down Mode current < 1uA
  • Bluetooth LE 5.0 with 2Mbps and up to 8 simultaneous connections
  • Improved Wi-Fi co-existence
Digital and Analog InterfacesSecurity
  • UART/SPI/I2C up to 2
  • ISO7816 Interface for Secure Access Module
  • 8 ch 12-bit ADC,
  • 1 Analog comparator
  • Digital Microphone Interface and Audio Event Detection
  • AES256 with hardware protected key
  • Hash engine (SHA256)
  • Code readout protection
Clocks and timersOperating Conditions
  • 32 MHz and 32.768 kHz crystals
  • Low and High Frequency Internal Clock sources
  • 4 x general purpose timer
  • 32K sleep timer
  • Watchdog timer
  • RTC with calibration
  • Operating voltage: 1.9 to 3.6V
  • Junction Temperature range: -40 to 125 °C


Multiprotocol Configurations

K32W061/41 MCUs support multi-protocol and share the radio hardware. Device is programmed with more than one protocol at manufacturing. Customers can use it in switched or dynamic multi-protocol according to the application.


A device that is compatible with more than one protocol. Device is programmed at manufacturing and can be reprogrammed by customer for another protocol.


Only one stack connection maintained. Switching between protocols by using a bootloader.


  Two stack connections maintained, the application time-slices between two protocols (can transmit and receive simultaneously for 15.4 and BLE).


Accelerate Your Time to Market

The K32W061/41 Development Kit (PN: IOTZTB-DK006) is designed to make it as easy as possible to get started with your project based on K32W061/41. The IOTZTB Development Kit’s rich components include a control bridge/generic router with an NFC reader, generic switch node, light/sensor node and USB dongle that make quick prototyping possible for a small wireless network. The development kit is orderable now.


To learn more about K32W061/41 family, please visit http://www.nxp.com/K32w061