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Low-power IC aims at Bluetooth Smart devices with NFC Tags

Posted: 04 Dec 2014     Print Version  Bookmark and Share

Keywords:BLE ICs  NFC Tag  GATT 

Toshiba America Electronic Components Inc. (TAEC) has rolled out the TC35670FTG, a dual-function IC that backs both Bluetooth Low Energy (BLE) and NFC Type 3 Tag functions. This low-power consumption IC has been optimised for wearable healthcare devices, sensors, toys and touch-and-start smartphone accessories.

The latest IC joins Toshiba's line-up of Bluetooth LE ICs, and offers two key features: easy operation of Bluetooth pairing with NFC Tag function; low-power consumption standby status to increase battery lifetimes for devices powered by small coin-cell batteries. The device achieves peak power consumption of 5.9mA for Bluetooth communication (3.3V, -4dBm transmitter output power or receiver operation) and 600μA or lower for NFC Tag communication (3.3V). It also achieves power consumption of 0.1μA or lower in deep sleep (3.3V).

Toshiba's TC35670FTG

The NFC Tag function can enable easy pairing of Bluetooth LE devices, as well as provide a convenient on/off switch function, which reduces standby power drain and contributes to longer battery life. In addition, both the Bluetooth LE and NFC Tag functions can be put in standby mode, and the connection from the first function accessed can be prioritised.

The Bluetooth component has a receiver sensitivity of -92.5dBm and transmitter output power of between 0dBm to -20dBm (4dB steps). It supports GATT (Generic Attribute Profile) including both client and server functions, as well as host-based and stand-alone systems. It features a DC-DC converter, low-drop regulator, general-purpose ADC, user-programme function, wake-up signal for the host device and PWM function.

The NFC Tag component has a 1.5KB E2PROM for storing data that component specifiers can access using both the BLE and NFC Tag to connect to each I2C interface, allowing data to be easily handled in each system. Toshiba also offers various Bluetooth LE standard profiles to be used in combination with application programming.

The TC35670FTG is available on a QFN40 package measuring 6mm x 6mm, 0.5mm pitch, and supports an operating temperature range of -30°C to 85°C.





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