AT89Sxx Cheap and Simple Learning Board
Tuesday, August 18th, 2009Build your own a cheap simple Microcontroller learning board S-52. The board is based on ATMEL’s new ISP chip AT89S51, AT89S52, or AT89S53. This board can be used by beginners for learning Assembly and C language programming. Single sided PCB file included.
Introduction
I have designed this leaning board to be used as a tool for learning MCS-51 Microcontrollers.
The AT89Sxx learning board features,
- 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),
- TxD and RxD serial port for communicating with serial devices,
- 32 bit GPIO,
- Onboard rectifier and +5V DC voltage regulator,
- Single Sided PCB design.
Hardware
The board design is kept as simple as possible so that everone can make the learning board easily. The schematic shown below shows the complete hardware schematic of the AT89Sxx learning board. PORT0, PORT1, PORT2, and PORT3 are available for interfacing external devices. P3.0 and P3.1 are being used for RS232 interface.
Figure1: Complete hardware schematics: MCU, and power supply
Components:
R1 330 1/4W +/-5%
R2 10K 1/4W +/-5%
R3-10 10K 1/4W +/-5% (for pull up on P0)
C1 1000uF/16V electrolytic capacitor
C2 100uF/16V electrolytic capacitor
C3 100nF multilayer or ceramic
C4 10uF/16V electrolytic
C5,C6 33pF ceramic
D1 1N4001 / 1N4002 silicon rectifier diode
D2 LED
U1 LM7805, voltage regulator
U1 AT89S51, AT89S52 or AT89S53
X1 Crystal 1MHz – 33MHz (11.0592MHz is suitable for standard BAUD rate generator using timer1, says 9600 )
DB25 parallel port, 25pins connector
Construction
In order to make the AT89Sxx learning board, download the PCB ZIP file click on PCB ZIP FILES link given below. The file contains the single sided PCB track layout in PDF. Use the convenient file for making the PCB. Put the components as shown in the picture shown below.
How to make PCB?
- You can print the PCB file. I have designed it using Express PCB (freeware)
Figure2: Component placement layout.
- Then copy with copier machine on tranparant paper. If you have a laser printer, you can print it on transparant paper or glossy photo paper.
- After that, pell on PCB with clothes Iron.
- After 5-15 minutes I turn off the clothes iron and remove the board to let it cool down.
It needs to cool down because it is quit hot (30-40 degree Celcius) - Remove the paper form PCB. You can see how I am removing that paper. Movie file
AT89Sxx Cheap and Simple Learning Board
Code Programming
The SPI In system Programming adapter such as Cheap Loader Cable of Asim’s ISP for 89S51 89S52 can be used for program loading to the MCU. Connect the ISP adapters 6 pin connector with the 6 pin ISP header on this board. Run the ISP software on PC for sending the Intel hex file to microcontroller. Then program will start running.
Figure4: ISP cable schematics
Figure5: How to connect isp cable to board
Figure6: ISP Flash Programmer
Project by Tahan Prahara, prahara_satria@yahoo.co.id
Description :
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can u please provide the code for the same ?
hi sir
i am very sorry that urs circuit doesnot woks properly.so plz send me more detail.
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One does not often find on the internet as decent articles as yours is. I cant wait to read some more of your works.
boleh tau ga…
gmana cara membuat algoritma yang ditanam di ic menggunakan bahasa c/c++?
dan gmana cara belajarnya…
Hi TAHAN, I like the way U present your work. I want to start as a
beginner in micro controllers .Can U be my master? Also I need the ff.
circuit diagrams: 10km FM transmitter, 5000W amplifier circuit diagrams.
Hoping to hear favorably from U soon.Enjoy your day
dear i m new in m.controller field…………will u help me in making
a project???
please send me the details of ISP programming and the ISP software which is seen on this page
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hello i am using 89s52 microcontroller for wireless communication using rx434 but problem arries in serial communication data is not receiced by the receiver so can u help in debuging and can u send me the software of the design shown above
plz send me the circuit and code for this.
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Может посоветуете другой более дешевый и работающий?
Please sir Give me full detail of this circuit and ISP Code programming tips
Hello everyone I just desired to expose myself. When you have any questions don’t hesitate to ask. Sorry with regard to my own bad language
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[...] AT89Sxx Cheap and Simple Learning Board [...]
mr.tahan,why u hav used 10 k resistors {for port 0}….??????????
can we simplify the express pcb structure…???????
Hello every person I recently wanted to expose personally. For those who have any queries please ask. Sorry for my personal poor language
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sir,ehy u hav used 8 resistors inside ic??????
why u hav used 8 resistors???
Hi there everybody I simply desired to introduce personally. For those who have any questions don’t hesitate to ask. Sorry regarding my own bad language
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hi, i m doing a project, microcontroller based water level indicator. will u plz help me with the pcb design for the same as early as possible?