Microchip Technology
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ATMEGA48A-MMHR

ATMEGA48A-MMHR

Product Overview

Category

ATMEGA48A-MMHR belongs to the category of microcontrollers.

Use

It is widely used in various electronic applications that require a microcontroller for processing and controlling tasks.

Characteristics

  • High-performance 8-bit AVR microcontroller
  • Low power consumption
  • Enhanced RISC architecture
  • In-system programmable flash memory
  • Wide operating voltage range
  • Multiple communication interfaces (UART, SPI, I2C)
  • Rich set of peripherals (ADC, PWM, timers)

Package

ATMEGA48A-MMHR is available in a compact surface mount package.

Essence

The essence of ATMEGA48A-MMHR lies in its ability to provide efficient and reliable control and processing capabilities in a small form factor.

Packaging/Quantity

ATMEGA48A-MMHR is typically packaged in reels or tubes, with a quantity of 2500 units per reel/tube.

Specifications

  • Microcontroller Architecture: AVR
  • CPU Speed: Up to 20 MHz
  • Flash Memory: 4 KB
  • RAM: 512 bytes
  • EEPROM: 256 bytes
  • Operating Voltage: 1.8V - 5.5V
  • Digital I/O Pins: 23
  • Analog Input Pins: 6
  • Communication Interfaces: UART, SPI, I2C
  • Timers/Counters: 3
  • PWM Channels: 6
  • ADC Resolution: 10-bit
  • Package Type: QFN
  • Package Dimensions: 7mm x 7mm

Detailed Pin Configuration

The pin configuration of ATMEGA48A-MMHR is as follows:

| Pin Number | Pin Name | Function | |------------|----------|----------| | 1 | RESET | Reset | | 2 | VCC | Power Supply (3.3V - 5V) | | 3 | GND | Ground | | 4-11 | PORTB0-7 | Digital I/O Pins | | 12-13 | XTAL1, XTAL2 | Crystal Oscillator Pins | | 14 | GND | Ground | | 15-16 | AREF, AVCC | Analog Reference and Power Supply | | 17-20 | ADC0-3 | Analog Input Pins | | 21-23 | PCINT8-10 | Pin Change Interrupts |

Functional Features

ATMEGA48A-MMHR offers the following functional features:

  1. High-performance processing capabilities for efficient control tasks.
  2. Low power consumption, making it suitable for battery-powered applications.
  3. In-system programmable flash memory allows for easy firmware updates.
  4. Multiple communication interfaces enable seamless integration with other devices.
  5. Rich set of peripherals, such as ADC and PWM, enhance its versatility.

Advantages and Disadvantages

Advantages

  • Compact size and low power consumption make it suitable for portable and battery-powered applications.
  • Wide operating voltage range allows for flexibility in different power supply scenarios.
  • In-system programmability simplifies firmware updates and maintenance.
  • Rich set of peripherals provide additional functionality without external components.

Disadvantages

  • Limited amount of flash memory and RAM may restrict the complexity of applications.
  • Lack of built-in Ethernet or Wi-Fi connectivity limits its compatibility with networked systems.
  • Availability of alternative models with higher specifications may overshadow its usage in certain applications.

Working Principles

ATMEGA48A-MMHR operates based on the AVR architecture, which utilizes a modified Harvard architecture with separate program and data memories. It executes instructions fetched from the flash memory and performs various tasks based on the program logic. The microcontroller interacts with external devices through its I/O pins and communication interfaces, enabling control and data exchange.

Detailed Application Field Plans

ATMEGA48A-MMHR finds applications in various fields, including but not limited to:

  1. Home automation systems
  2. Industrial control systems
  3. Internet of Things (IoT) devices
  4. Robotics and automation
  5. Consumer electronics
  6. Automotive electronics
  7. Medical devices

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to ATMEGA48A-MMHR are:

  1. ATMEGA88A-MMHR: Offers increased flash memory and RAM capacity.
  2. ATMEGA328P-MMHR: Provides additional features like built-in UART, SPI, and I2C interfaces.
  3. ATMEGA2560-MMHR: Suitable for applications requiring higher computational power and extensive I/O capabilities.

These alternative models can be considered based on the specific requirements of the application.

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Seznam 10 běžných otázek a odpovědí souvisejících s aplikací ATMEGA48A-MMHR v technických řešeních

Sure! Here are 10 common questions and answers related to the application of ATMEGA48A-MMHR in technical solutions:

  1. Q: What is ATMEGA48A-MMHR? A: ATMEGA48A-MMHR is a microcontroller from the AVR family, manufactured by Microchip Technology. It offers 4KB of Flash memory, 512 bytes of SRAM, and various peripherals.

  2. Q: What are the key features of ATMEGA48A-MMHR? A: Some key features include 23 general-purpose I/O pins, 8-channel 10-bit ADC, USART, SPI, I2C, timers/counters, and internal oscillator options.

  3. Q: How can I program ATMEGA48A-MMHR? A: You can program ATMEGA48A-MMHR using various programming languages like C or assembly. You will need a programmer/debugger tool and an Integrated Development Environment (IDE) such as Atmel Studio or Arduino IDE.

  4. Q: Can ATMEGA48A-MMHR be used for IoT applications? A: Yes, ATMEGA48A-MMHR can be used for IoT applications. Its low power consumption, built-in communication interfaces, and GPIO pins make it suitable for connecting sensors, actuators, and other devices in IoT projects.

  5. Q: What voltage does ATMEGA48A-MMHR operate at? A: ATMEGA48A-MMHR operates at a voltage range of 1.8V to 5.5V, making it compatible with a wide range of power supply options.

  6. Q: Can ATMEGA48A-MMHR be used for motor control applications? A: Yes, ATMEGA48A-MMHR can be used for motor control applications. It has PWM (Pulse Width Modulation) outputs and timers/counters that can be utilized for controlling motors.

  7. Q: Is ATMEGA48A-MMHR suitable for battery-powered devices? A: Yes, ATMEGA48A-MMHR is suitable for battery-powered devices due to its low power consumption capabilities. It offers sleep modes and power reduction techniques to optimize energy usage.

  8. Q: Can I use ATMEGA48A-MMHR for real-time applications? A: Yes, ATMEGA48A-MMHR can be used for real-time applications. It has built-in timers/counters that can generate interrupts at precise intervals, allowing you to handle time-sensitive tasks.

  9. Q: What kind of communication interfaces does ATMEGA48A-MMHR support? A: ATMEGA48A-MMHR supports USART (Universal Synchronous/Asynchronous Receiver/Transmitter), SPI (Serial Peripheral Interface), and I2C (Inter-Integrated Circuit) communication interfaces.

  10. Q: Are there any development boards available for ATMEGA48A-MMHR? A: Yes, there are development boards available specifically designed for ATMEGA48A-MMHR, such as Arduino Uno or custom-made boards. These boards provide easy prototyping and integration with other components.

Please note that the answers provided here are general and may vary depending on specific requirements and application scenarios.