Dear 8052.com fans,

I have been using 89c51 & 52 programmer that I`ve designed a year ago. This time
I wanted to upgrade my device for 89c55WD but I failed. Although I applied the programming instructions given in the Atmel document literally, I could not provide any code writing into 89C55WD. I have checked all the points I had to, but could not find any mistake of mine.(but there should be)

Has any of you tried 89c55WD flash programming? At which point I may have failed? Is there any tricky point that its document has not mentioned so?

Thanks in advance.

Rustu Kaya