Specifications
| Attribute | Value |
| Package | Tray |
| Series | AVR® ATmega |
| ProductStatus | Active |
| CoreProcessor | AVR |
| CoreSize | 8-Bit |
| Speed | 20MHz |
| Connectivity | I²C, SPI, UART/USART |
| Peripherals | Brown-out Detect/Reset, POR, PWM, WDT |
| NumberofI/O | 23 |
| ProgramMemorySize | 32KB (16K x 16) |
| ProgramMemoryType | FLASH |
| EEPROMSize | 1K x 8 |
| RAMSize | 2K x 8 |
| Voltage-Supply(Vcc/Vdd) | 1.8V ~ 5.5V |
| DataConverters | A/D 8x10b |
| OscillatorType | Internal |
| OperatingTemperature | -40°C ~ 85°C (TA) |
| MountingType | Surface Mount |
| Package/Case | 32-VFQFN Exposed Pad |
Overview
Description
The ATMEGA328-MU is a microcontroller from Microchip Technology, part of the AVR family. It's well-regarded for its balance of performance, power efficiency, and cost-effectiveness, making it popular for various embedded applications, including hobbyist projects and professional designs.
Key features include an 8-bit AVR RISC architecture, operating at up to 20 MHz. It has 32KB of flash memory, 2KB of SRAM, and 1KB of EEPROM, which provide ample space for code and variable storage. The microcontroller also offers 23 general-purpose I/O pins, which are highly configurable to suit different interfacing requirements.
For communication, the ATMEGA328-MU supports UART, SPI, and I2C/TWI protocols. It includes six PWM channels and six 10-bit ADC channels, enabling effective analog signal processing and motor control. The device operates between 1.8V to 5.5V, ensuring compatibility with various power supplies.
Packaged in a compact QFN package (QFN-32), the ATMEGA328-MU is ideal for space-constrained applications. Its efficiency and versatility make it suitable for automotive, consumer electronics, and IoT applications.
Key features include an 8-bit AVR RISC architecture, operating at up to 20 MHz. It has 32KB of flash memory, 2KB of SRAM, and 1KB of EEPROM, which provide ample space for code and variable storage. The microcontroller also offers 23 general-purpose I/O pins, which are highly configurable to suit different interfacing requirements.
For communication, the ATMEGA328-MU supports UART, SPI, and I2C/TWI protocols. It includes six PWM channels and six 10-bit ADC channels, enabling effective analog signal processing and motor control. The device operates between 1.8V to 5.5V, ensuring compatibility with various power supplies.
Packaged in a compact QFN package (QFN-32), the ATMEGA328-MU is ideal for space-constrained applications. Its efficiency and versatility make it suitable for automotive, consumer electronics, and IoT applications.
Equivalent
Equivalent products to the ATMEGA328-MU microcontroller include the Microchip ATMEGA328P-AU, which offers similar functionality and pin compatibility. Other alternatives are the Microchip ATMEGA328PB series, which adds additional features and peripherals. Additionally, the ATMEGA168 series can be considered for applications requiring fewer resources. STMicroelectronics STM32F031K6T6 and NXP LPC1114FHN33 are also viable alternatives, offering ARM Cortex-M cores in similar package sizes. Always verify specific requirements and pin compatibility when selecting a substitute.
Features
The ATMEGA328-MU is a microcontroller from Microchip Technology, part of the AVR family. It features an 8-bit AVR CPU with low power consumption and operates at up to 20 MHz. It has 32KB of flash memory, 2KB of SRAM, and 1KB of EEPROM for data storage. The microcontroller supports a wide operating voltage range from 1.8V to 5.5V.
Key features include:
- 23 general-purpose I/O pins for versatile interfacing.
- 6-channel 10-bit ADC for analog signal processing.
- 3 timers/counters for precise timing operations.
- USART, SPI, and I2C interfaces for communication.
- Watchdog timer for system reliability.
- Operating temperature range of -40°C to +85°C, suitable for various environments.
- Power-saving modes to enhance energy efficiency.
The ATMEGA328-MU is available in a 32-pin VQFN package, making it compact for space-constrained applications. It is widely used in embedded systems, consumer electronics, and development platforms like Arduino.
Key features include:
- 23 general-purpose I/O pins for versatile interfacing.
- 6-channel 10-bit ADC for analog signal processing.
- 3 timers/counters for precise timing operations.
- USART, SPI, and I2C interfaces for communication.
- Watchdog timer for system reliability.
- Operating temperature range of -40°C to +85°C, suitable for various environments.
- Power-saving modes to enhance energy efficiency.
The ATMEGA328-MU is available in a 32-pin VQFN package, making it compact for space-constrained applications. It is widely used in embedded systems, consumer electronics, and development platforms like Arduino.
Pinout
The ATmega328-MU is a microcontroller from Microchip Technology, housed in a 32-pin VQFN package. It is based on the AVR architecture and is widely used in embedded systems, including Arduino boards like the Arduino Uno.
Pin Count:
- 32 pins
Key Functions:
- Digital I/O: 23 programmable I/O lines for various functions.
- Analog Inputs: 6 channels of 10-bit ADC for analog-to-digital conversion.
- PWM Channels: 6 PWM outputs for generating variable analog signals through digital means.
- Timers/Counters: 3 timer/counter units for timing operations and waveform generation.
- USART/SPI/I2C Interfaces: Serial communication protocols for data exchange with other peripherals.
- External Interrupts: 2 external interrupt pins for responding to external events.
- Programming and Debugging: Supports in-system programming and debugging through SPI or other compatible interfaces.
- Oscillator: Supports both internal and external clock sources.
These features make the ATmega328-MU suitable for a wide range of applications, from simple control tasks to more complex data processing.
Pin Count:
- 32 pins
Key Functions:
- Digital I/O: 23 programmable I/O lines for various functions.
- Analog Inputs: 6 channels of 10-bit ADC for analog-to-digital conversion.
- PWM Channels: 6 PWM outputs for generating variable analog signals through digital means.
- Timers/Counters: 3 timer/counter units for timing operations and waveform generation.
- USART/SPI/I2C Interfaces: Serial communication protocols for data exchange with other peripherals.
- External Interrupts: 2 external interrupt pins for responding to external events.
- Programming and Debugging: Supports in-system programming and debugging through SPI or other compatible interfaces.
- Oscillator: Supports both internal and external clock sources.
These features make the ATmega328-MU suitable for a wide range of applications, from simple control tasks to more complex data processing.
Manufacturer
The ATMEGA328-MU is manufactured by Microchip Technology Inc. Microchip is a publicly traded company that specializes in producing microcontroller, analog, and Flash-IP integrated circuits. It is known for providing a wide range of semiconductor products and solutions that serve various industries, including automotive, consumer electronics, industrial, and communications. The company aims to offer innovative and reliable products that cater to the needs of both small and large-scale applications. Microchip's offerings include microcontrollers, embedded security devices, and wireless connectivity solutions, among others, making it a significant player in the semiconductor industry.
Application
The ATMEGA328-MU, a microcontroller from Microchip Technology, is commonly used in various applications due to its flexibility and efficiency. Key areas include:
1. Embedded Systems: Utilized in small to medium-sized systems for controlling sensors, motors, and displays.
2. IoT Devices: Acts as the brain for smart and connected devices.
3. Consumer Electronics: Powers gadgets like remote controls and game consoles.
4. Robotics: Integrates in robot control systems for processing inputs and executing actions.
5. Prototyping and Education: Popular in Arduino boards, facilitating learning and rapid prototyping.
6. Industrial Automation: Manages processes and machinery controls.
Its versatility makes it a staple across diverse technological applications.
1. Embedded Systems: Utilized in small to medium-sized systems for controlling sensors, motors, and displays.
2. IoT Devices: Acts as the brain for smart and connected devices.
3. Consumer Electronics: Powers gadgets like remote controls and game consoles.
4. Robotics: Integrates in robot control systems for processing inputs and executing actions.
5. Prototyping and Education: Popular in Arduino boards, facilitating learning and rapid prototyping.
6. Industrial Automation: Manages processes and machinery controls.
Its versatility makes it a staple across diverse technological applications.
Package
The ATMEGA328-MU is a microcontroller from Microchip Technology, packaged in a QFN (Quad Flat No-leads) format. Specifically, it is available in a 32-pin QFN package, which is compact and suitable for space-constrained applications.
