how to build 8051 programmer

[Keklja]

Hi all
I have Atmel 89c51RB2-UM and AT89C51-24PI uC. Is there a way to build programmer for them? I dont wont to buy programmer just for these 3 uC because there are old.

 

[Kick]

u can design a programmer circuit in bread board.

 

[Keklja]

For both of them?
Do you have a schematics?

 

[Kick]

I think u can follow this circuit.

 

[Keklja]

I think I read somewhere you can not program AT89C51 that way. Anyway I will try and write here result. Thx

 

[Kick]

In my opinion it will support all 8051 microcontrollers..lets check

 

[FvM]

In my opinion it will support all 8051 microcontrollers..lets check

No, only newer xxRB2 and xxRD2 which have flash self-write capability and a Bootloader-ROM. Standard 89C51 needs a parallel programmer.

In case of doubt, just review the datasheet.

 

[Keklja]

Ok. So with that design on previous post I can program my AT89C51RB2, correct? Now for my other uC. I find this programmer o ebay. Here is the link: **broken link removed**
I can programmer with that my standard AT89C51?

 

[nandhu015]

Ok. So with that design on previous post I can program my AT89C51RB2, correct? Now for my other uC. I find this programmer o ebay. Here is the link: **broken link removed**
I can programmer with that my standard AT89C51?

No, You cant program at89c51.

 

[Keklja]

Why not? It is not parallel programer?

 

[FvM]

Review the schematic. Do you see any programming hardware (high voltage supply, pin drivers, controller)?

 

[Keklja]

Im new in this area. I dont see controller. High voltage supply, pin drivers for those I'm not sure what they do but i dont see high voltage supply. But design on a picture few post earlier also doesnt have these but can be programed because it is At89C51RB2 and have bootloader?

 

[Keklja]

So Im gonna try that design that Kick posted. In pictures below are components that I need. Only I dont have 470ohm resistor that is connected to the reset button. What is my alternative? I will google that. I have serial connector and max232 connected together (bought that long time ago on ebay) but I dont think it will work, so I backup. Tomorrow I try to connect that and tell you result. In meantime look and pictures and tell me do I need something else.