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Development board for AT89SXXXX
10 June 2005
www.sixca.com
This is a development board for ATMEL AT89 series or ATMEL ISP.It uses In-System Programming .Easy to use for developing your ATMEL
MCS-51 base
projects.
Features
Support ATMEL AT89S series such as AT89S51, AT89S52, AT89S53, AT89S8252.(DIP 40 pin devices)
Use In-System Programming(ISP).Low voltage programming
RS232 X 1 .
5 V regulate on-board.
No need any tools or programmer devices .
connector for all I/O.
Requite one PC parallel port for ISP.
Software supports for All Windows.
easy to build your own single side PCB.
Require power supply from DC adpaptor 9-12VDC or AC
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Fig. 1
Schematic
Fig. 2 ATMEL ISP calble
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How to use ATMEL ISP.
To use this ATMEL ISP board you need to download software
ISP-3v0 developed by Muhammad Asim Khan and distributed by
Prof. Wichit 's website or download at the buttom on this page.
Fig.3 Software ATMEL ISP V3.0
After
download software.
1. Connect ATMEL ISP cable to PC parallel port and power supply. (see Fig.5)
2. Run software ISP3.0 for Windows95/98/ME use ISP-3v0.exe and WindowsXP/2000/NT use ISP-XP.bat .
3. Select your devices from drop down list menu.
4. Click "Open file" to open hex file.
5. Click "Write" to program device.
How to use RS232 port.
To use RS232 port ,first build a simple RS232 cable.
Fig. 4 RS232 cable
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Fig.5
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Example program to blink led on port2 (Compile with KEIL C51) |
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#include <reg52.h>
//=========================
// delay function
//=========================
void delay(int del_val)
{
int i,k;
for(i=0;i<=del_val;i++)
for(k=0;k<=50;k++);
}
//=== main program =========
void main()
{
int count,patt;
while(1)
{
patt=0x1; // 00000001
for(count=0;count<=8;count++)
{
P2=~patt;
patt=patt<<1;
delay(1000);
}
patt=0x80; // 10000000
for(count=0;count<=8;count++)
{
P2=~patt;
patt=patt>>1;
delay(1000);
}
}
} // end of main program
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