PIC Programmer schematic RS232

In the article you will find a description of the universal PIC programmer, which suggested the involvement of Jens Madsen Dyekjar [ http://www.jdm.homepage.dk/newpic.htm ]. Program allows districts PIC12C5XX, 12C67X, 16C55X, 16C61, 16C62X, 16C71, 16C71X, 16C8X, 16F8X, serial EEPROM 24Cxx. It allows to program the microcontroller directly involved (ICSP) and other adapter series programmable components, such as ISO cards. When I needed some time to program the PIC microcontroller, I decided to build a programmer. This solution seemed more operative than I repeatedly asked someone on the programming of their friends.
PIC Programmer schematic RS232 - schematic

PIC programmers on the Internet can find a large number, but these are a few options involved. Ease programmers, especially excel to be attached to a serial COM port. In search of my choice fell on JDM programmer. The simplest PIC programmer is very simple. As shown in Figure 1 , sufficient to build the cable clamp IC, a 100 ohm resistor and voltage source of approximately 5 V [ http://www.jdm.homepage.dk/easypic.htm ]. The programmer is not too shabby programmed circuit. To reduce the voltage applied intercepting internal diode and power supply. According to remarks in the discussions is also the function of the rather unreliable. A slightly more complex programmer according to Figure 2 no longer needs an external power source [ ftp://ftp.ai.uga.edu/pub/microcontrollers/pic/ludipipo.zip ]. Common infirmity of those two is the lack of involvement of voltage Vpp, which is obtained directly from the serial COM port. The circuits are powered port voltage ± 12 V from a source computer, the laptop just double voltage of 5 V. Control Program IC-Prog is freely available on the Internet [ http://www.ic-prog.com ]. Allows you to program to retrieve data from files in several formats, read, erase and program the microcontroller to write, edit and set the data type of the oscillator and the "fuse". First you must select the type of programmer (JDM, the very first item). In Windows XP, the program will not work without additional...

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