I have licensed mdk Essential version in keil u vision 5. I am using nordic( NRF 24 Le IC) i am getting an error L250 code size restrictions as error. Can some one help me with this, Do I need keil professional development kit license for this?
Of course you didn't!
Because an 8051 is not an ARM - is it?!
In the banner at the top of the page is a link for 'Products'. There you will find a list of all Keil's toolchains, and the architectures they support ...