BLE 4.2 Chip Lets Beacons Run For 2 Years On Coin-cell Battery!


Toshiba has launched two new ICs supporting Bluetooth Low Energy ver.4.2 communications. The new chips are foreseen to increase use of BLE in IoT products that require a high level of security, including wearable devices for healthcare applications and small devices that use coin batteries, such as sensors, remote controllers and toys.

The “TC3567CFSG” and “TC3567DFSG offer low current consumption as well as an enhanced security function.

The new ICs feature a peak current consumption of 3.3mA at 3V voltage supply in transmission mode. The firm says it has achieved this using a highly efficient DC-DC converter and an original low-power circuit design.

The chips, says Toshiba, are also able to acquire a random number with a length of up to 32 bytes, using a random number generator, newly incorporated as hardware, a function that will help to strengthen the information security of IoT products.


TC3567CFSG incorporates 128KB Flash ROM for storing user programs and various data in stand-alone operations, and can execute an approximately 50KB application program at maximum.

Integration of an RF matching circuit and crystal load capacitors for a clock generator allow reductions in cost and mounting area. In a minimal case, only seven components are required for set development, says Toshiba.

TC3567DFSG has no built-in Flash ROM and achieves extremely low current operation by reducing the current consumption required for access to Flash ROM. This allows it to achieve long operating times for applications powered by small coin batteries. For example, using a CR2032 type coin battery, the new IC, according to Toshiba, can carry out beacon operation for over two years.

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Sample shipments of the new devices have started. For further details, view the full Press release.



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