After long time with Atmel AVR MCU i decide to try SiLabs. More resources with less size! Only need developer tools - and if with no problem with software then hardware need money. General tools - USB Debug Adapter ($60) or ToolStick Base Adapter ($37) + ToolStick Debug Adapter ($21) with delivery time 2-3 weeks. I use other way to start with Silabs. Design ToolStick BA + DA pin compatible board with C8051F342 chip (with PCB USB connector). ToolStick Debug Adapter firmware available from Silabs site (as part of USB Debug Adapter Firmware Reset.exe). Original use C8051F321 chip - but no problem...
