Familiarization of AVR ATmega32 Mini Development Board

AVR ATmega32 Development Board(mini) is a miniature and powerful hardware platform to evaluate the Atmel ATMega32 Flash memory microcontroller. The board is designed with a variety of hardware to exercise AVR ATMega32 microcontroller peripherals. Compact size (10.1 cm x 8.5cm) and low cost makes it one of the best in its class. The board is ideal for training and development purposes.

Key Features

Compact and ready to use design
Includes AT Mega32 Microcontroller with 8MHz Crystal Oscillator
No separate power adapter required(USB power source)
External power supply range of 7V to 12V
Adaptor (any standard 9-12 power supply) option
On board 5V,1A and 3V3 voltage regulator ICs
RS-232 interface (for direct connection to PC’s serial port)
Built in user programmable LEDs (3 no)
On board Reset Switch
On board Buzzer interface
On board power LED indicator
3 on board Pull up keys
On board Temperature sensor
LCD Interface (16×2)
Berg strips available to interface Servo motor
Provision for interfacing Zigbee module
Provision for interfacing RFID module
On board Prototyping area
All Controller pins available at male and female berg strips
RMC connectors available in 5V and 3V3 for USART
On board DB9 and USB Connector
RMC Connector and DC Barrel Jack for external power supply
JTAG Connector for debugging/programming
ISP port-5×2 IDC Connector
Built in potentiometer interface for ADC with variable voltage input
Power supply reverse polarity protection
Can be used as header board for developing applications
High quality two layer PTH PCB
Professional EMI/RFI complaint PCB layout design for noise reduction

ATmega32 Chip Specifications

Atmel AVR AT Mega32 WITH 8MHz crystal oscillator(with boot loader software)
32 k bytes programmable flash
2 k bytes SRAM
1024 bytes EEPROM
16MHz operation(Up to 16MIPS)
32 I/O pins
8 channel 10 bit ADC
4 PWM channels
Two 8 bit Timer/Counter
One 16 bit Timer /Counter
One Serial USART
One Two Wire Serial Interface (TWI)
SPI Master /Slave
Power consumption ~20mA
2.7 – 5.5V for Atmel32L
4.5 to 5.5V for Atmel32

The following figures illustrate the peripheral features of the board

J1,J2 – To select serial port/USB port for UART0 communication
J11(Power jumper) – To select power source as USB/DC source
Power LED – Glows when the board is powered
SWITCHES – On-board switches
LEDs – On-board SMD LEDs
SW4 – Reset switch

K16 – Connector for using UART in 3.3V level
LCD – Berg strip connector for LCD
K10 – Connector for using UART in 5V level
K11 – Connector for interfacing servo motor
AREF – Jumper to select AREF as 3.3V/5V
J4,J5,J6 – Jumpers connecting LEDs to port pins PC0, PC1 & PC2
J3 – Connects potentiometer to PA0(ADC0)
J10 – Connects temperature sensor to PA1(ADC1)
J7,J8,J9 – Jumpers connecting switches to port pins PD2, PD3 & PD4
J10 – Jumper connecting buzzer to port pin PC7
J13 – Jumper connecting RX of controller to DOUT of Zigbee
J14 – Jumper connecting TX of controller to DIN of Zigbee

Layout

How to test?

Step 1: Launch AVR Studio (click here to download )

Step 2: Click New Project to create a new project

Step 3: Under Project Type, select AVR GCC Compiler for C program(shown encircled in green). Select Create Initial file (encircled in red) option

Step 4: Give project name, file name and select location to save your project and click Next>>

Step 5: From the Device list, select the device ATmega32 to be programmed and click ‘Finish‘

Step 6: The editor window opens as shown below

Step 7: Enter the code

Step 8: Save your file by File > Save, keyboard shortcut Ctrl + S or using Save icon

Step 9: Build the project

Now the code can be flashed to the controller
In the board, do the following jumper connections

Select the power source as USB cable or DC source using jumper J11
Select USB or serial port using jumpers J1 & J2 for flashing the code

Now power up the board. The power LED(red LED on the board) glows.

Step 10: Select Tools > AVR Prog , simultaneously press reset switch on the mini development board

Step 11: Select the desired hex file and click Program (encircled in red under Flash) to load the program to the device. After successfully flashing the code, use controller for the desired purpose.