How to burn hex files in avr microcontrollers

In this post we will learn, how to burn hex file in avr microcontroller using programmer and burner software.

List of components/software:

1. USBasp programmer
2. Target circuit board having microcontroller (mine have atmega8)
3. Avrdudes (Burner software)

Prerequisites:
USBasp driver installed in your system.
If it is not installed, then read instructions about installation from my previous post.
USBasp driver installation

Default fuse byte for atmega8a is: HFUSE = 0XC9 and LFUSE = 0X1F
This corresponds to internal rc oscillator having frequency 1 MHz

HFUSE = 0XC6 and LFUSE = 0XE4

This corresponds to internal rc oscillator having frequency 8 MHz

We can use interal as well as external oscillator. For the time being, we are using internal rc oscillator having frequency 8 MHz.

First of all generate hex file using avr studio. Now find out the directory of the hex file.

Burner software

USBasp with target circuit board

USBasp programmer

The connections from USBasp programmer to target circuit board (atmega 8a is as follows):

USBASP                                    ATMEGA8A

VCC                                           PIN NO. 7, 20, 21 (VCC, AREF, AVCC)

GND                                          PIN NO. 8, 22 (GND)

RST                                            PIN NO. 1 (RESET)

MOSI                                         PIN NO. 17 (MOSI)

MISO                                         PIN NO. 18 (MISO)

SCK                                           PIN NO. 19 (SCK)

The connection is same for any other microcontroller e.g. atmega 16, atmega 32, etc.

Download avrdudes from the below link:

Download avrdudes

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