Software Downloads

Download software files to support Silicon Labs 8-bit and 32-bit microcontroller, interface, clock, oscillator, optical sensor, wireless ZigBee® and Thread development.
8-bit Microcontroller Studio  

8-bit Microcontroller Studio

Full 8-bit microcontroller studio for 8051 MCUs. These tools unlock the power and flexibility of the 8-bit microcontroller family.
Interface Software and Drivers  

Interface Software & Drivers

VCP drivers, USBXpress drivers, firmware & host API for CP21xx USB bridge products & USB MCU products
Si114x Optical Sensor Programmer's Toolkit  

Si114x Programmer's Toolkit

Software API & full suite of sample source code & utilities for Silicon Labs’ Si114x Optical Sensors
ClockBuilder Desktop  

Clock Software

Customize a clock, calculate jitter and simplify clock multiplication & jitter attenuation high-speed telecom applications

Oscillator Software

Evaluate MEMS oscillators, configure custom parts & get example code for general-purpose oscillators
Wireless Development Suite  

EZRadio® Sub-GHz Wireless Software

Comprehensive toolset to quickly and easily create & deploy efficient, robust & low-cost wireless applications
ZigBee Software and Development Tools 

ZigBee® Development

Development kits, ZigBee software stacks and development tools to build and monitor robust ZigBee mesh networks
Thread Training  

Thread Development

Development kits, Thread software stacks and development tools to build and monitor robust Thread mesh networks
Effective January 1, 2011, Silicon Labs software applications are no longer supported on the Windows 2000 operating system. While existing support has not been removed, all future product releases will support Windows XP SP3 and newer versions.