The Pebble Smartwatch connects to iPhone and Android smartphones using Bluetooth to alert users with a silent vibration to incoming calls, emails and text messages. The real-time performance and power efficiency of the embedded STM32 F2 MCU gives Pebble users a balance of functionality and battery life as well as full customisability - complete with downloadable watch faces and useful Internet-connected apps.
When dealing with wearable technology, the packaging size is also extremely important. At just 4mm x 4mm, the STM32 F205 chip uses a minimal amount of space while delivering performance and battery life.
In addition to the STM32 microcontroller, Pebble also uses ST’s LIS3DH MEMS digital-output motion sensor. The LIS3DH senses acceleration along all three axes and contributes to the watch’s usefulness via ultra low-power operational modes that allow advanced power saving and smart embedded functions.
The watch; http://getpebble.com
The silicon; www.st.com