KW41Z/31Z/21Z Wireless MCUs

NXP Kinetis KW41Z/31Z/21Z Wireless Microcontrollers (MCUs) integrate a Bluetooth® Low Energy (BLE) v4.2, Generic FSK (at 250kbit/s, 500kbit/s, and 1000kbit/s), and IEEE® 802.15.4 compliant modem. These MCUs support multiple protocols running concurrently (time slice) in a single chip. The KW41Z/31Z/21Z MCUs also integrate a buck-boost DC-DC converter that supports a wide range of operating voltages from 0.9V to 4.2V. This integration significantly reduces the peak current in receive and transmit modes. The KW41Z/31Z/21Z MCUs deliver an excellent link budget that ensures the longest range of communication and high immunity to interference.

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Operating Frequency
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Output Power
Sensitivity
Supply Voltage - Min
Supply Voltage - Max
Supply Current Receiving
Supply Current Transmitting
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Packaging
NXP Semiconductors RF System on a Chip - SoC BLE only
Datasheet
1.300In Stock
Min.: 1
Mult.: 1

BLE 4.2 Wireless Radio ARM Cortex M0+ 2.4 GHz 1 Mbps 3.5 dBm - 95 dBm 900 mV 4.2 V 6.8 mA 6.1 mA 256 kB - 40 C + 105 C QFN-48 Tray
NXP Semiconductors RF System on a Chip - SoC BLE Only KW40_512
Datasheet
697In Stock
Min.: 1
Mult.: 1

BLE 4.2 Wireless Radio ARM Cortex M0+ 2.4 GHz 1 Mbps 3.5 dBm - 95 dBm 900 mV 4.2 V 6.8 mA 6.1 mA 512 kB - 40 C + 105 C QFN-48 Tray
NXP Semiconductors RF System on a Chip - SoC Kinetis KW41Z: BLE 4.2 & 802.15.4 Wireless MCU, 48MHz Cortex-M0+, 512KB Flash, 128KB RAM, 48-LQFN
Datasheet
180Expected 07/10/2026
Min.: 1
Mult.: 1

BLE 4.2, LR-WPAN ARM Cortex M0+ 2.4 GHz 1 Mbps 3.5 dBm - 95 dBm 900 mV 4.2 V 6.8 mA 6.1 mA 512 kB - 40 C + 105 C QFN-48 Tray
NXP Semiconductors RF System on a Chip - SoC 802.15.4 Only
Datasheet
Non-Stocked Lead-Time 16 Weeks
Min.: 1.300
Mult.: 1.300

LR-WPAN ARM Cortex M0+ 2.4 GHz 1 Mbps 3.5 dBm - 100 dBm 900 mV 4.2 V 6.8 mA 6.1 mA 256 kB - 40 C + 105 C QFN-48 Tray
NXP Semiconductors RF System on a Chip - SoC 802.15.4 Only KW40_512
Datasheet
Non-Stocked Lead-Time 16 Weeks
Min.: 1
Mult.: 1

LR-WPAN ARM Cortex M0+ 2.4 GHz 1 Mbps 3.5 dBm - 95 dBm 900 mV 4.2 V 6.8 mA 6.1 mA 512 kB - 40 C + 105 C QFN-48 Tray
NXP Semiconductors RF System on a Chip - SoC Kinetis KW41Z: BLE 4.2 & 802.15.4 Wireless MCU, 48MHz Cortex-M0+, 256KB Flash, 64KB RAM, 48-LQFN
Datasheet
Non-Stocked Lead-Time 16 Weeks
Min.: 1.300
Mult.: 1.300

BLE 4.2, LR-WPAN ARM Cortex M0+ 2.4 GHz 1 Mbps 3.5 dBm - 95 dBm 900 mV 4.2 V 6.8 mA 6.1 mA 256 kB - 40 C + 105 C QFN-48 Tray