8051 serial programmers

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Hassan Gazal

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dear all ,

i found on internet a lot of 8051 programmers , i need a simple programmer using serial port not parallel port
just using the MAX232 and the main micro controller i need to program only 89s52 or 89s51 not any C family .

also i found some programmers using another chip with internal firmware i don't need that also , so if any programmer using only MAX232 and main controller.


i found this circuit so if i did it , it will work or not ???

https://obrazki.elektroda.pl/5921015900_1374853258.gif
 

I think ,if you want with max232 .you defiantly need a pre-programmed controller .
otherwise you can simply program via parallel port
 
I have a parallel programmer for only 89sxx can i use parallel to usb converter to use it ??

and if yes please which software can i use ??
 

The programmer you just posted is a USBasp.

Why not just purchase one for $3 or $4 on eBay or from a manufacturer like:

51 AVR MCU Download Cable with USBASP

Do you have or know a person with a system with an RS-232 or LPT port available?

There are simply programmer designs for the AVR, a few discrete components and some 74 series ICs.

Simple AVR Programmers


BigDog
 

Yes, You need 2 - 33pf capacitors.

Now how are you going to flash the 89c2051 programmer?

Edit
I havnt tried it personally, but it should work.. Best of luck
 
for 89c2051 i will using my friend programmer to burn the firmware , i will try and tell you about result
Thanks
 

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