Programming an AT89S2051 : 8051 Microcontroller Projects AVR PIC Projects Tutorials Ebooks Libraries codes

Forums

8051 Microcontroller Projects AVR PIC Projects Tutorials Ebooks Libraries codes :: Forums :: Discuss and Learn :: 8051 Discussion Forum		<< Previous thread \| Next thread >>
Programming an AT89S2051


Moderators: Ajay, Junied , abbas1707, Arun Kumar V, pdi33, Shailesh NAYAK, ۞ TPS ۞, shyam, sashijoseph

Author

Post

netx1

Fri Mar 21 2008, 03:10AM

Registered Member #6546

Joined: Mon Mar 10 2008, 02:12AM

Posts: 14
Thanked 0 times in 0 posts

Hello!

I've got problems with programming an AT89S2051. I'm using a programmer called ATMEL ISP from Ulrich Bangert (that's the link: http://ulrich-bangert.de/ATMELISP.zip). It's an really easy to build programmer, because it only uses an RS232 to TTL/CMOS converter and a 74HC126.
I've built it and it functions, because I'm able to program an AT89S8253 with it. But I'm not able to program an AT89S2051 or to read out the code memory of it. Sometimes when I try to program the 2051 all ports are LO (also after reset), but the most time nothing happens.

Can you help me? Why is the 2051 making problems?

Ajay

Fri Mar 21 2008, 11:07AM

Rickey's World Admin

Registered Member #1

Joined: Fri Feb 24 2006, 04:56AM

Posts: 3753
Thanked 696 times in 655 posts

AT89S2051 is not supported by atmel ISP. Please try not to program it.. you may get your IC burnt.

www.rickeyworld.info
If you feel satisfied with the user's forum reply please click on the thank button.

Obey forum rules!
Respect others!

elfcurry

Wed Aug 06 2008, 09:12AM

Registered Member #9626

Joined: Wed Aug 06 2008, 09:01AM

Posts: 1
Thanked 0 times in 0 post

I think netx1 is right, Ajay.

The S in the part number AT89S2051 means it can be serially programmed in the target system. I have such a part and ISP programmer and will soon try it.

Maybe I've misunderstood you but surely Atmel's AT89S parts use the same algorithm?

Arun Kumar V

Wed Aug 06 2008, 08:00PM

Registered Member #426

Joined: Sun Jan 28 2007, 11:50PM

Posts: 452
Thanked 190 times in 160 posts

Maybe I've misunderstood you but surely Atmel's AT89S parts use the same algorithm?

that need not be, AT89S51/52 share common algorithm but At89S53 has 4 bit (nibble) algorithm and also At89C55 is different to At89C55WD when it comes to programming.

best advice would be to read the Device datasheet and decide accordingly

Arun