Target board
That’s the board with socket that you place your chip (the empty chip which you are going to program)
It consists of 5 lines with ground. The programming pins in the ATMEL chip (the pins that help to program) must connect to this five lines coming to the target board.
If you need the VDD line as well you can bring that line too.
The chip already there in the circuit is used to program other ATMEL chips. It must load the FIRMWARE first but it must program from another programmer.
After you program the main chip (89C2051) it must there permanently. After all these done you are ready to program other ATMEL chips.
1) As mentioned, the AT89C51 must be load with the firmware first.. but Im not sure how to do that.. isn't just construct the circuit, then placed the AT89c51 permanently in the circuit and load the firmware from the Laptop COM port to the entire circuit?
2) Can I use AT89c52 instead of AT89c51??
3) From the target board, where should I connect the 5 lines to my AT89S51 which have 40pins?
hope u guys can help me asap... really urgent... many thanks!!!!
1) As mentioned, the AT89C51 must be load with the firmware first.. but Im not sure how to do that.. isn't just construct the circuit, then placed the AT89c51 permanently in the circuit and load the firmware from the Laptop COM port to the entire circuit?
Oh... this might be a problem for me to find the programmer for the AT89c51...
by the way..
may I know if I can change my microcontroller to PIC type?? as my project is related to a digital number lock which consist of keypad, LCD and servo motor...
hope u can advise...
plus.. in this project i need to store password into memory so that the password is still when the power is off...
edit: the following is a response to a post deleted by simrantogether, so if it seems out of context well what can you do.
I never said that India or anywhere else in the world was weak or not good.
India and quite a few places along the Pacific rim are off the free samples list of some major chip manufacturers and that can make it tough for students. I don't sell my kits in some countries not because I don't want to, it's simply economics. A $40US kit which is inexpensive in some parts of the world is like a months wages in other parts. The notorious ship graveyards in India pay only $2 day for dangerous work. **broken link removed** **broken link removed** http://www.luminous-landscape.com/locations/ship-breaking.shtml (this is a local photographer from Toronto, great site)
I can't buy a microcontroller off the street in Toronto for less than $1 where as you can, albeit an ancient chip.
On the other hand India massive supply of inexpensive english speaking labor has made it a booming business for call centers & software programmers. The bad news is it's mainly because it's cheap labor, China has a similar situation. If I want something manufactured cheap and in large quantity; China is the place to do it.
the kit that you are selling for $40.. our co. designs and sells that at $ 60 - 80/-.. Do you think $ 40 a huge amount?
well.. you dont buy the pic for $1 ... same here...
while talking about wages of poor people... I have no problem but something you are lagging..