royalties for Intel 8051 in my own design

[dd2001]

royalties for 8051

Hi, I want to use 8051 soft core with my design and sell it, anyone knows that do I have to pay royalties to Intel?

 

[sunjimmy]

Hi,

As i know, the 8051 patent granted by intel had been expired last year. So it should be OK now.

Hope it helps : )

 

[Nobody]

Watch out the 8051 Watch-dog timer patent . It seem Dallas still hold it .
Two local company drop it from datasheet here .

 

[hock]

i think the royalty clause will be mentioned in you software (vhdl code) agreement provided by your supplier.
Hock

 

[Ansunamu]

Should be no problem if you want to write 8051 core

There area lots of IC provider sell the 8051 IP so the patient should be not an issue anymore

 

[vsop]

As I know, Intel still hold the patent on 8051's I/O port structure, but that on micro-code was expired. As long as you do not make use of the same I/O port structure, it should be no patent issue.