The CC2541 is TI's Bluetooth? low energy RF System-on-Chip (SoC) for the 2.4 GHz unlicensed ISM band. This chip enables consumer applications by offering state-ofthe-art selectivity/co-existence, excellent link budget, and low voltage operation. The CC2540 is similar to the CC2541. It does not have the I2C like the CC2541, but has an USB interface instead. The CC2540 has the ability to output 4dBm during transmits; the CC2541 can only output 0dBm. However, unlike the CC2541 the CC2540 cannot be used in the proprietary mode.
