Atmel 8051 Programmer

Atmel 8051 Programmer

Powerful programmer for the Atmel 89 series of microcontrollers that includes 89C51/52/55, 89S51/52/55 and many more. With this article you can make your own programmer. This is a complete programming solution when it is attached to a suitable power supply and connected to your personal computer. Proload and Firmware Version 4.1 at 57600 speed.



  • Supports major Atmel 89 series devices
  • Auto Identify connected hardware and devices
  • Error checking and verification in-built
  • Lock of programs in chip supported to prevent program copying
  • 20 and 40 pin ZIF socket on-board
  • Auto Erase before writing and Auto Verify after writing
  • Informative status bar and access to latest programmed file
  • Simple and Easy to use
  • Works on 57600 speed


Dimensions: 76mm x 180mm (3″ x 7″)
Power Supply: 14-18V DC or 12-16V AC
Interface: RS-232, 9-pin D connector
Data Speed: 57600 bps, 8 bits, no parity, 1 stop, no flow control
File format: Intel 8-bit HEX
Program Sockets: 40 pin DIP – 0.6″ & 20 pin DIP 0.3″ ZIF socket
Software: Works on Windows 95, 98, Me, 2000, NT, XP



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Simple to use & low cost, yet powerful flash microcontroller programmer for the Atmel 89 series. It will Program, Read and Verify Code Data, Write Lock Bits, Erase and Blank Check. All fuse and lock bits are programmable. This programmer has intelligent onboard firmware and connects to the serial port. It can be used with any type of computer and requires no special hardware. All that is needed is a serial communication port which all computers have.

All devices have signature bytes that the programmer reads to automatically identify the chip. No need to select the device type, just plug it in and go! All devices also have a number of lock bits to provide various levels of software and programming protection. These lock bits are fully programmable using this programmer. Lock bits are useful to protect the progam to be read back from microcontroller only allowing erase to reprogram the microcontroller.

The programmer connects to a host computer using a standard RS232 serial port. All the programming ‘intelligence’ is built into the programmer so you do not need any special hardware to run it. Programmer comes with window based software for easy programming of the devices.

Supported Devices:
AT89C51, AT89LV51, AT89C52, AT89LV52, AT8C55, AT89LV55,
AT89S51, AT89LS51, AT89S52, AT89LS52, AT89S53, AT89LS53,
AT89S8252, AT89LS8252, AT89C55WD, AT89C1051, AT89C2051, AT89C4051

Note: Above information is taken from Prof. Sirichote site and all the details are available at his site for making this Do-it-yourself (DIY) programmer.

Click this link to buy this programmer




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