Got the CC2650 SensorTag, DevPack and LaunchPad from TI. Thank you TIer. Both DevPack and LaunchPad have built-in XDS110 debugger. No extra debugger is required to start development.
CC2650 is a multi-standard 2.4GHz ultra-low power MCU. It supports BLE, IEEE 802.15.4 and proprietary radio. It contains a 48MHz Cortex-M3 as the main processor with a rich peripheral features.