Hi Phillip,

please open another thread on a new question.

8052AH was only the device name and tells nothing about the factory programmed code inside.
So any 8052AH can only be used as 8032AH with external code EPROM.

I would suggest to put all these 8052AH into the trash can. Since 8052 without C inside the name means they are gulping power and getting really hot.

Today I would suggest to use the AT89C52, which are cheap and easy to get. The Basic hex file should be found around the web. So you can send it to your dealer and get a ready programmed AT89C52 with the Basic interpreter to continue your development.

I know not exactly the URL, where you can get the hex file, since I never used Basic. I started with assembler and use C now.


Peter