hi~
I used to use 89C52 for my soccer robot.

Today I go to China to buy some 89C52, they said that "the AT89C52 won't be produced anymore" All I can find is an AT89S52.

I used a programmer to program the 89C52(So I don't know what the PC & uC actually doing!) Now I HAVE TO try the 89S52.

What I should know or learn before I try my first time to program the 89S52? I DON'T have ANY idea about the ISP, the circuit, the hardware... (how can the code being downloaded to the uC?)

Stanley