AT89s52 Serial programmer with PiC 16F84?

[Tércio]

Hello Everybody.

I want build a serial programmer AT89s52, and i found a lot of this. The problem is my laptop that have just a USB ports and, i found programmers that use other mcu in circuit, like this: **broken link removed**.

But, how can i build this, if i can not programmer the master mcu?!

So, i am looking for serial programmer that use other device, specifically a PIC 16F84 ( for this i found a programmer circuit that i can build ) or, other alternative, a serial programmer that not use other mcu in circuit.

Can you help me?

10x ;-)

p.s: i have a USB-RS232 converter.

 

[nandhu015]

There are lot of programmers designed for parallel port with no mcu (only logic ic) available on the net. You can use such programmer for programming your firmware chip.

USB-RS232 converter will not support any serial port based circuits. Any way you should find a pc with serial or parallel port

Nandhu

 

[pranam77]

But, how can i build this, if i can not programmer the master mcu?!

You may find some friends or some educational institutes, or any Component vendor who can program the Firmware chip for you...Cheers