EFM8BB1LCK 8-bit Development Kit Silicon Labs EFM8BB1LCK 8-bit Development Kit offers an easy-to-use evaluation and prototyping platform for the EFM8BB1 Busy Bee 8-bit Microcontrollers. The EFM8BB1LCK Kit features a pre-mounted EFM8BB1 MCU, with 8kB Flash, 512 bytes RAM, and 18 GPIO pins. This Kit also includes an on-board USB debugger and break-out headers for the EFM8BB1 GPIOs, making it easy to use as a starting point for application development. The EFM8BB1LCK can easily be connected to a computer via USB. The Simplicity Studio Integrated Development Environment (IDE) can then be used to access tools, software examples, source code libraries, and documentation for the target MCU.