NXP MKW21D256VHA5 ARM Cortex M4 Microcontroller, 50 MHz, 256kB FLASH, 56-Pin LGA

The Kinetis KW2xD Series of BLE/IEEE 802.15.4 compliant wireless microcontrollers are cost-effective, low power SoCs incorporating a 2.4GHz radio transceiver and an ARM Cortex-M4 core processor. The KW01Z Series feature a Sub-1GHz transceiver and a Cortex-M0+ core processor. Applications for the KW Series microcontrollers include Smart Meters, networked building control, home automation, healthcare/medical monitoring, industrial monitoring/control and local communication for the Internet of Things (IoT).

KW2xD Series
2.4GHz BLE/IEEE 802.15.4 compliant RF transceiver
Suitable for ISM and MBAN band operation
50MHz ARM Cortex-M4 core processor
RF Power Output: Up to +8dBm
Receiver Sensitivity: -102dBm @ 250kbps
Modulation OQPSK
OTA data rate: 250kbps over 1 of 16 selectable channels
Supports Clear Channel Assessment (CCA), Energy Detection (ED) and Link Quality Indicator (LQI)