The TC35661-551 from Toshiba is a highly integrated RF CMOS Bluetooth device which supports Bluetooth Classic (3.0+EDR) and the BT LE (low energy) 4.2 standard. The dual-mode TC35661-551 simplifies the secure system design of a variety of Bluetooth-enabled products ranging from smartphone accessories and toys to healthcare equipment, industrial as well as automotive sensors and switch solutions. It offers the ability to implement secure connections based around ECDH (Elliptic Curve Diffie-Hellman) public key cryptography, a technology adopted by the Bluetooth 4.2 standard. This additional security provides a very high degree of protection against 'passive eavesdropping' attacks.
The device provides simple Bluetooth integration for various industrial, medical and automotive applications. This chip is also automotive qualified (AECQ100) and Bluetooth Qualification Body (BQB) qualified.