picprog

BY SUHAS KAUSHIK D S NISHANTH VASHIST SHREYANK P

Guide : Sr.Lect RAVIKANT G BIRADAR

It is a circuit which interfaces the PC to the microcontroller using the PC's parallel, serial or USB port.

It can write data to the microcontroller and read it back for verification.

Translates digital logic levels from the PC to suitable logic levels for the microcontroller.

BUILDING PIC PROGRAMMER

They generate a serial data stream using two signal lines clock and data.

Takes the hex file generated from your compiler translating it into a serial data stream.

After all the data is sent, acknowledgement is sent by PIC.



PC Programmer PIC(In Circuit)

BLOCK DIAGRAM

Based on PC interface usedi) Serial programmers ii)Parallel

programmers iii)USB programmers

Based on system programmingi) In Circuit Serial Programming (ICSP)ii) Out Circuit Serial Programming (OCSP)


Set of connections that let you program the PIC while it is in your circuit i.e. no need to remove the chip just program it.

Only 5 connections between PIC and programmer

i) VPP - Programming voltage (usually 13V). ii) VDD - POWER (usually 5V). iii) VSS - GROUND. iv) PGD - DATA usual port and connection RB7. v) PGC - CLOCK usual port and connection RB6.



PARALLEL PORT RS232 IC DM7407N


Programming voltage of 11.5V-13V

Voltage of 5V for PIC microcontroller and IC DM7407N’s working



+5V POWER SUPPLY+11.5V POWER SUPPLY

The equation for the LM317 is: Vo = 1.25 * (1+R6/R5)Vo = 1.25 * (1+10k/1k2) = 11.66V

The output of IC7805 is 5V which is used to power ICDM7407N and PIC

MIkRO C-To write the program which has to be performed by the PIC

EPICWIN-to convert the program written in C to hex file.


Can’t be used with laptops as its output power may not be good enough to operate the programmer

It is slow compared to the USB programmers



THANK YOU

picprog

Documents

pic microcontroller

pic epicwin

serial data stream

power supply

output power

pgd data usual port

system programming i

usb port