ATmega32
ATmega32
The ATmega32 is a 8-bit, low-power, microcontroller (MCU) from Atmel Corporation (now part of Microchip Technology). It is a member of the AVR (Advanced Virtual RISC) family of microcontrollers, which are known for their high performance, low power consumption, and ease of use.
The ATmega32 is a versatile microcontroller that can be used in a wide range of applications, including industrial control systems, consumer electronics, IoT devices, and embedded systems. It features a high-performance 8-bit AVR processor core, 32KB of flash memory, 2KB of SRAM, and 1KB of EEPROM.
8-bit AVR processor core with 16 million instructions per second (MIPS) performance.
Support for 120 instructions, including 32-bit and 16-bit arithmetic, logical, and control operations.
32KB of in-system reprogrammable flash memory for storing program code.
2KB of internal SRAM for data storage.
1KB of internal EEPROM for storing non-volatile data.
23 programmable I/O lines, including 15 digital I/O pins and 8 analog input pins.
Support for various I/O modes, including TTL, CMOS, and open-drain.
10-bit, 8-channel ADC with a maximum sampling rate of 15,000 samples per second.
One full-duplex UART with asynchronous and synchronous modes.
One SPI interface for serial communication with external devices.
One TWI (Two-Wire Interface) interface for communication with other TWI-compatible devices.
Internal 8MHz RC oscillator or external clock source.
Six sleep modes and an idle mode to reduce power consumption.
Support for memory protection units (MPUs) to protect code and data.
Cyclic redundancy check (CRC) for data integrity verification.
2.7V to 5.5V.
-40C to 85C.
| Active mode | 8mA at 4MHz, 16mA at 8MHz; idle mode: 1.5mA at 4MHz, 3mA at 8MHz; power-down mode: 0.1mA. |
| The ATmega32 is suitable for a wide range of applications, including |
The ATmega32 is available in a 40-pin PDIP (Plastic Dual In-Line Package) and a 32-pin QFN (Quad Flat No-Lead) package.
| For more information on the ATmega32, please refer to the following resources |
ATmega32 datasheet (Atmel Corporation)
ATmega32 user manual (Atmel Corporation)
AVR Studio 5 (Atmel Corporation) - a free, integrated development environment (IDE) for developing and debugging AVR-based applications.
ATmega32 Microcontroller DocumentationOverviewThe ATmega32 is a 8-bit AVR microcontroller from Atmel (now part of Microchip Technology). It is a popular choice for various embedded systems and IoT applications due to its low power consumption, high performance, and rich feature set.Features8-bit AVR architecture
32 KB of flash memory
2 KB of SRAM
1 KB of EEPROM
32 general-purpose I/O lines
4-channel 10-bit ADC
1 UART, 1 SPI, and 1 TWI (I2C) interfaces
8-channel 10-bit timer/counter
Analog comparator
Interrupt controller
Power-saving sleep modesPinoutThe ATmega32 is available in a 40-pin PDIP package. The pinout is as follows:| Pin | Function |
| --- | --- |
| 1-8 | Port B (PB0-PB7) |
| 9-16 | Port C (PC0-PC7) |
| 17-24 | Port D (PD0-PD7) |
| 25-32 | VCC, GND, and various analog and digital interfaces |
| 33-34 | AREF, AVCC (analog voltage reference) |
| 35-36 | XTAL1, XTAL2 (crystal oscillator) |
| 37-40 | RESET, AVCC (reset and analog voltage reference) |Code Examples### Example 1: Blinking LED using ATmega32In this example, we will use the ATmega32 to blink an LED connected to Pin 13 (PB5) using the internal clock.```c
#include <avr/io.h>
#include <util/delay.h>#define LED_PIN (1 << PB5)int main(void) {
// Set Pin 13 (PB5) as output
DDRB |= LED_PIN;while (1) {
// Toggle LED state
PORTB ^= LED_PIN;// Wait for 100 ms
_delay_ms(100);
}return 0;
}
```### Example 2: UART Communication using ATmega32In this example, we will use the ATmega32 to send a string "Hello, World!" over the UART interface at a baud rate of 9600.```c
#include <avr/io.h>
#include <avr/interrupt.h>
#include <avr/sleep.h>
#include <string.h>#define F_CPU 16000000UL
#define BAUD_RATE 9600
#define UART_BAUD_CALC(((F_CPU / 16) / BAUD_RATE) - 1)int main(void) {
// Set UART baud rate
UBRRH = (UART_BAUD_CALC >> 8);
UBRRL = UART_BAUD_CALC;// Enable UART transmitter
UCSRB = (1 << TXEN);char message[] = "Hello, World!
";while (1) {
// Send string over UART
for (uint8_t i = 0; i < strlen(message); i++) {
while (!(UCSRA & (1 << UDRE)));
UDR = message[i];
}// Wait for 1 second
_delay_ms(1000);
}return 0;
}
```These examples demonstrate the basic usage of the ATmega32 microcontroller. The first example shows how to use the ATmega32 to control an LED, while the second example demonstrates UART communication.Note: These code examples assume that the ATmega32 is being used with the AVR-GCC compiler and the avr-libc library.