The C5545 Booster Pack is a small form factor, low-cost rapid development platform which includes all the hardware and software needed to evaluate the C553x and C5545 DSP families. The C553x and C5545 ultra-low-power (ULP) DSP are the industry’s lowest-cost and lowest power 16-bit DSP. The Booster Pack features C5545 ULP DSP at 100MHz with plenty of interfaces, such as I2S, SPI, USB2 and more. It has an on-board CC2650 BLE radio for easy connectivity and interface to MSP432 Launch Pad for easy expansion. to read as follows: It has an on-board SimpleLink™ Bluetooth® low energy CC2640 wireless microcontroller for easy connectivity which interfaces to the MSP432™ MCU LaunchPad™ development kit for easy expansion.