Overview
The ATMEGA644-20AU is an 8-bit microcontroller from Microchip Technology, part of the AVR family. It features 64K bytes of in-system programmable flash memory, making it a versatile choice for a wide range of applications. This microcontroller operates within a voltage range of 1.8 to 5.5 VDC and is housed in a 44-pin TQFP package. It is designed to provide high performance and low power consumption, making it suitable for various embedded systems and IoT projects.
Key Specifications
| Specification | Value |
|---|---|
| Microcontroller Type | 8-bit AVR |
| Flash Memory | 64K bytes |
| Operating Voltage | 1.8 to 5.5 VDC |
| Package Type | TQFP-44 |
| Operating Temperature | -40°C to +85°C |
| Clock Speed | Up to 20 MHz |
| Internal SRAM | 4K bytes |
| EEPROM | 2K bytes |
| I/O Pins | 32 |
| Comparator | 1 |
Key Features
- In-system programmable flash memory of 64K bytes.
- 4K bytes of internal SRAM and 2K bytes of EEPROM.
- 32 general-purpose I/O lines.
- One 8-bit Timer/Counter with separate prescaler, one 16-bit Timer/Counter with separate prescaler, and one 8-bit PWM channel.
- Real-Time Counter (RTC) with separate oscillator.
- On-chip analog comparator.
- Programmable Watchdog Timer with separate on-chip oscillator.
- On-chip debug system (debugWIRE).
Applications
The ATMEGA644-20AU is suitable for a variety of applications, including:
- Embedded systems requiring high performance and low power consumption.
- IoT devices and smart home automation.
- Industrial control systems and automation.
- Consumer electronics such as remote controls and gaming devices.
- Automotive systems and automotive infotainment.
Q & A
- What is the ATMEGA644-20AU?
The ATMEGA644-20AU is an 8-bit microcontroller from Microchip Technology, part of the AVR family. - How much flash memory does the ATMEGA644-20AU have?
The ATMEGA644-20AU has 64K bytes of in-system programmable flash memory. - What is the operating voltage range of the ATMEGA644-20AU?
The operating voltage range is 1.8 to 5.5 VDC. - What type of package does the ATMEGA644-20AU come in?
The ATMEGA644-20AU is housed in a 44-pin TQFP package. - What is the maximum clock speed of the ATMEGA644-20AU?
The maximum clock speed is up to 20 MHz. - How many I/O pins does the ATMEGA644-20AU have?
The ATMEGA644-20AU has 32 general-purpose I/O lines. - Does the ATMEGA644-20AU have an on-chip debug system?
Yes, it has an on-chip debug system (debugWIRE). - What is the temperature range for the ATMEGA644-20AU?
The operating temperature range is -40°C to +85°C. - How much SRAM and EEPROM does the ATMEGA644-20AU have?
The ATMEGA644-20AU has 4K bytes of internal SRAM and 2K bytes of EEPROM. - What are some common applications for the ATMEGA644-20AU?
Common applications include embedded systems, IoT devices, industrial control systems, consumer electronics, and automotive systems.
