Hi, I would like to know that is there any evaluation board for zigbee development with keil? And is there any free or proprietary stack available from keil? Thanks in advance.
"...but found nothing useful"
Energy Micro only ever Made ARM (32-bit) - not 8051 (8-bit) - chips.
Energy Micro part numbers began "EFM..." - I can see that right up on the SiLabs front page:
www.silabs.com/.../default.aspx
They are still using the same Gecko name & emblem for them:
www.silabs.com/.../32-bit-microcontrollers.aspx