Transcript
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.
BUILDING PIC PROGRAMMER
BUILDING PIC PROGRAMMER
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)
BUILDING PIC PROGRAMMER
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.
BUILDING PIC PROGRAMMER
BUILDING PIC PROGRAMMER
PARALLEL PORT RS232 IC DM7407N
BUILDING PIC PROGRAMMER
Programming voltage of 11.5V-13V
Voltage of 5V for PIC microcontroller and IC DM7407N’s working
BUILDING PIC PROGRAMMER
BUILDING PIC PROGRAMMER
+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.
BUILDING PIC PROGRAMMER
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
BUILDING PIC PROGRAMMER
BUILDING PIC PROGRAMMER
THANK YOU