ATMega32A-U 8-Bit AVR Dip

ATMega32A-U 8-Bit AVR Dip is a high-quality electronic component designed for Arduino, prototyping, and educational electronics. ATMEGA32 Features

ATMEGA32 – Simplified Features

CPU
8-bit AVR

Number of Pins
40

Operating Voltage (V)
+2.7 to +5.5 V (+5.5V being absolute maximum)

Number of I/O pins
32

Communication Interface
JTAG Interface(24,25,26,27 PINS)[Can be used for programming this controller]

Master/Slave SPI Serial Interface(5,6,7,8 PINS) [Can be used for programming this controller]

Programmable Serial USART(14,15 PINS) [Can be used for programming this controller]

Two-wire Serial Interface(22,23 PINS)[Can be used to connect peripheral devices like sensors and LCDs]

ADC Module
8 channels , 10-bit resolution ADC

Timer Module
Two 8-bit counters, One 16-bit counter [Total three]

Analog Comparators
1

DAC Module
Nil

PWM channels
4

External Oscillator
0-16MHz

Program Memory Type
Flash

Program Memory (KB)
32Kbytes[10000 write/erase cycles]

CPU Speed (MIPS)
16 MIPS

RAM Bytes
2KBytes

Data EEPROM
1024 Bytes

Watchdog Timer
Programmable Watchdog Timer with Separate On-chip  Oscillator

Power Save Modes
Six Modes[Idle, ADC Noise Reduction, Power-save, Power-down, Standby and Extended Standby]

Operating Temperature
-55°C to +125°C(+125 being absolute maximum, -55 being absolute minimum)

ATMEGA32 Pin Configuration

Pin No.
Pin name
Description
Alternate Function

1
PB0(XCK/T0)
Pin 0 of  PORTB
T0( Timer0 External Counter Input)

XCK ( USART External Clock I/O)

2
PB1(T1)
Pin 1 of  PORTB
T1(Timer1 External Counter Input)

3
PB2(INT2/AIN0)
Pin 2 of  PORTB
AIN0(Analog Comparator Positive I/P)

INT2( External Interrupt 2 Input)

4
PB3(OC0/AIN1)
Pin 3 of  PORTB
AIN1(Analog Comparator Negative I/P)

OC0 (Timer0 Output Compare Match Output)

5
PB4(SS)
Pin 4 of  PORTB
SS (SPI Slave Select Input).  This pin is low when controller acts as slave.

[Serial Peripheral Interface (SPI) for programming]

6
PB5(MOSI)
Pin 5 of  PORTB
MOSI (Master Output Slave Input). When controller acts      as slave, the data is received by this pin.

[Serial Peripheral Interface (SPI) for programming]

7
PB6(MISO)
Pin 6 of  PORTB
MISO (Master Input Slave Output). When controller acts as slave, the data is sent to master by this controller through this pin.

[Serial Peripheral Interface (SPI) for programming]

8
PB7(SCK)
Pin 7 of  PORTB
SCK (SPI Bus Serial Clock). This is the clock shared between this controller and other system for accurate data transfer.

[Serial Peripheral Interface (SPI) for programming]

9
RESET
Reset Pin, Active Low Reset
Pulled HIGH to RESET controller.

10
Vcc
Vcc = +5V

11
GND
GROUND

12
XTAL2
Connected to Crystal Oscillator

13
XTAL1
Connected to Crystal Oscillator

14
PD0(RXD)
Pin 0 of  PORTD
RXD (USART Input Pin)

USART Serial Communication Interface

[Can be used for programming]

15
PD1(TXD)
Pin 1 of  PORTD
TXD (USART Output Pin)

USART Serial Communication Interface

[Can be used for programming]

16
PD2(INT0)
Pin 2 of  PORTD
External Interrupt INT0

17
PD3(INT1)
Pin 3 of  PORTD
External Interrupt INT1

18
PD4(OC1B)
Pin 4 of  PORTD
PWM Channel Outputs

19
PD5(OC1A)
Pin 5 of  PORTD

20
PD6(ICP)
Pin 6 of  PORTD
Timer/Counter1 Input Capture Pin

21
PD7 (OC2)
Pin 7 of  PORTD
Timer/Counter2 Output Compare Match Output

22
PC0 (SCL)
Pin 0 of  PORTC
TWI Interface

23
PC1 (SDA)
Pin 1 of  PORTC

24
PC2 (TCK)
Pin 2 of  PORTC
JTAG Interface

25
PC3 (TMS)
Pin 3 of  PORTC

26
PC4 (TDO)
Pin 4 of  PORTC

27
PC5 (TDI)
Pin 5 of  PORTC

28
PC6 (TOSC1)
Pin 6 of  PORTC
Timer Oscillator Pin 1

29
PC7 (TOSC2)
Pin 7 of  PORTC
Timer Oscillator Pin 2

30
AVcc
Vcc for Internal ADC  Converter

31
GND
GROUND

32
AREF
Analog Reference Pin for ADC

33
PA7 (ADC7)
Pin 7 of  PORTA
ADC (Analog to Digital Converter) Channel 7

34
PA6 (ADC6)
Pin 6 of  PORTA
ADC (Analog to Digital Converter) Channel 6

35
PA5 (ADC5)
Pin 5 of  PORTA
ADC (Analog to Digital Converter) Channel 5

36
PA4 (ADC4)
Pin 4 of  PORTA
ADC (Analog to Digital Converter) Channel 4

37
PA3 (ADC3)
Pin 3 of  PORTA
ADC (Analog to Digital Converter) Channel 3

38
PA2 (ADC2)
Pin 2 of  PORTA
ADC (Analog to Digital Converter) Channel 2

39
PA1 (ADC1)
Pin 1 of  PORTA
ADC (Analog to Digital Converter) Channel 1

40
PA0 (ADC0)
Pin 0 of  PORTA
ADC (Analog to Digital Converter) Channel 0

Where to Use ATMEGA32
ATMEGA32 is easy to program AVR controller. With appreciable program memory it can satisfy most EMBEDDED SYSTEMS. With various sleep modes it can work on MOBILE EMBEDDED SYSTEMS. Along with 32 programmable Input/Output pins, it can interface many peripherals easily. With Watchdog timer to reset under error it can be used on systems with no human interference.  With so many features with each appreciating other we can implement ATMEGA32 in many control systems.
How to Use ATMEGA32
Using ATMEGA32 is similar to any other microcontroller. Similar to them it is not Plug and Play digital ICs. For working of ATMEGA32, first we need to save the appropriate program file in the ATMEGA32 FLASH memory. After dumping this program code, the controller executes this code to create the response.

Entire process of using an ATMEGA32 goes like this:

List the functions to be executed by ATMEGA32
write the functions in IDE programs using relative language

(Usually Atmel Studio 6.2 for Windows7,

Atmel Studio 7 for Windows10

(For these IDE the functions should be written in ‘C’ language)

After writing the desired program compile for error elimination using IDE.
Opt the IDE application to generate HEX file for the written program.
Choose the programming device (usually SPI programmer made for AVR controllers) which establishes communication between PC and ATMEGA32
Run the HEX file dumping software which is related to the chosen programming device.
Choose the appropriate program HEX file in the SPI or other programmer software.
Burn the HEX file of program in ATMEGA32 flash memory using this program.
Disconnect the programmer, connect the appropriate peripherals for the controller and power the sytem.

Applications
There are thousands of applications for ATMEGA32.

Temperature control systems
Analog signal measuring and manipulations.
Embedded systems like coffee machine, vending machine.
Motor control systems.
Digital signal processing.
Peripheral Interface system.

Datasheet
Microchip Tech ATMEGA32A-PU It’s perfect for DIY makers, students, and anyone building custom electronic circuits or STEM kits.