8051 Starter for embedded systems....

having problem Using 89C51 ...

low memory (ROM)...4k only 128byte RAM
Difficulty in burning the IC ...
More complex programmers....

So here is a solution.....


Start using 89S series...
eg. 89S52 (8kb ROM 256 byte of RAM space) will be sufficient for most of you...
all ISP using 4 wire interface as is available with AVR
that is... only 4 wires ... RESET,,,,MOSI,,,MISO,,,,& SCK

also it is available at more or less at the same cost...
(ATMEL knows what all wants..)

CIRCUIT 1:

• Designed for new ISP chips, 89S51, 89S52, and 89S53, 40-pin DIP,
• In System Programmable (ISP) through the 6-pin header and a jumper, (no need external programmer),

F0r 89S series connect the AVR

Printer PORT ---- 89S51 / 89S52 or similar
pin 6 SCK
pin 7 MOSI
pin 9 RST
pin 10 MISO
Pin 18 - 25 GND
(TESTED)

Make your own ISP cable for the circuit board
OR
connect directly to IC on a breadboard
OR
connect on your own made IC board on general Purpose PCB]

SOFTWARE to be used :: ISP-Flash Programmer Ver3.0a available at
http://www.kmitl.ac.th/%7Ekswichit%20/IspPgm30a/ISP-30a.zip


CIRCUIT 2 (TESTED)
Circuit using Buffer 74HC541 (similar to 74HC244) compatible to STK200

6 wire interface (5 wire & a GND pin)
Parallel PORT pins to be used
PIN 5
PIN 6
PIN 7
PIN 9
PIN 10
PIN 18-25


Software used :: SAME ISP-Flash Programmer ver3.0


for extra details go to
Circuit 1:
http://www.kmitl.ac.th/~kswichit%20/tahan/boards51/Board%20S51.htm
Circuit 2:
http://www.kmitl.ac.th/%7Ekswichit%20/IspPgm30a/ISP-Pgm30a.html

else contact me...



*** NOTE :: connect + VCC & GND to 8051 .....

TESTED