Simple Usb Pic Programmer Circuit

It uses a ft245bl chip from ftdi.

Simple usb pic programmer circuit. Bc547 transistor pin configuration using ic base for pic connect the pic programmer to 1st or 2nd com port of computer by using rs232 wire. Connect the programmer to the pc with a male male a type usb cable. Usb mouse using pic18f4550 video. Open the openprog exe and make sure that programmer is detected.

Press the green arrow in the top to read the device. Connect usb b connector cable to the programmer and connect to the pc. The picpgm software uses the bit bang mode feature of the ft245bl to contol the pic programming pins. This video shows a simple hardware circuit connected to pc where the screen is divided into two parts the left part is a recorded video of the pc screen and the right side shows the hardware circuit.

The main component of this pic microcontroller programming circuit is a pic182550 microcontroller which controls the overall circuit. Usbpicprog is an usb in circuit programmer for microchip pic processors. I have used a very nice programmer software called win pic programmer you can download it from. Open devices and select the device which is to be programmed.

The green led blinks speedy first announcing the connection in progress. This is also an eeprom programmer as it supports 12cxx eeprom. The hardware is as simple as possible the current version only contains one pic18f2550 4 mosfets and besides the connectors a hand full of passive components. But be careful this circuit will not work with the laptop serial port due to the weak voltages it has.

Than slowly indicating that the connection phase is completed. The programmer is powered from the serial port itself so there s no need to any external power supply. By using this usb pic programmer you can program microchip pic series of 10f 12f 16f 18f 24f 30f. This chip provides a parallel io port via usb.

Following ujdm pic programmer circuit is a circuit which suitable to do simple pic16f84 pic16f84a 16c84 16f628 group programmer.