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Microchip ATMEGA644-20AU 8-bit AVR Microcontroller 20 MHz 64kB FLASH 44-Pin TQFP
Specifications
| Country of Origin | Taiwan |
|---|---|
| Brand | Microchip |
| Height | 1.05mm |
| Length | 10.1mm |
| Model | ATMEGA644-20AU |
| Width | 10.1mm |
| Mount Type | Surface |
| Series | Atmega |
| Maximum Operating Temperature | 85°C |
| Package Type | TQFP |
| Minimum Operating Temperature | -40°C |
| Ram size | 4kB |
| Interface Type | USART, SPI |
| Standards/Approvals | RoHS |
| Pin Count | 44 |
| Maximum Supply Voltage | 5.5V |
| Minimum Supply Voltage | 2.7V |
| Device Core | AVR |
| Program Memory Size | 64kB |
| Maximum Clock Frequency | 20MHz |
| Number of Programmable I/Os | 32 |
| Analogue Comparators | 1 |
| Number of Timers | 2 |
| Instruction Set Architecture | RISC |
| ADCs | 8 x 10 Bit |
| Program Memory Type | FLASH |
Key Features
- Features an 8-bit AVR architecture delivering efficient single clock cycle execution.
- Includes 4kB internal SRAM and 2kB EEPROM for program and data storage.
- Supports USART and SPI interfaces for versatile communication options.
- On-chip features include a watchdog timer, PWM, and 8-channel 10-bit ADC.
- Designed for operation between -40°C and 85°C with a supply voltage range of 2.7V to 5.5V.
- Offers 32 programmable I/O lines and 2 timers for precise control applications.
- Compliant with RoHS standards ensuring environmental safety.
- Compact dimensions of 10.1mm by 10.1mm in a surface-mount TQFP package.
Product Description
Microchip ATMEGA644-20AU is an 8-bit AVR microcontroller designed with a RISC architecture offering a high-performance 20 MHz clock frequency. It features 64kB of ISP flash program memory, 4kB internal SRAM, and 2kB EEPROM, suitable for a variety of embedded system applications.
This 44-pin TQFP surface mount device provides 32 programmable I/O lines and supports various communication interfaces including USART and SPI, making it flexible for different connectivity needs. Its on-chip peripherals include a watchdog timer, PWM channels, and an 8-channel 10-bit Analog-to-Digital Converter (ADC), facilitating analog signal processing and control.
The controller operates over a robust supply voltage range of 2.7V to 5.5V and is qualified for temperature ranges from -40°C to 85°C, supporting industrial and automotive environments. It has a low profile with a height of 1.05mm and compact footprint of 10.1mm x 10.1mm, enabling integration into space-constrained applications.
8-bit AVR architecture ensures efficient instruction execution in a single clock cycle. Includes 131 instructions for flexible programming. Fully static operation with power-saving sleep modes. On-chip 2-cycle hardware multiplier optimizes mathematical operations.
Real-time counter and PWM provide precise timing and control. Built-in brown-out detection and power-on reset safeguards system reliability. Meets RoHS compliance for environmental standards. Applications include embedded systems, PC motherboards, printers, scanners, and mobile PC docking.
This microcontroller is manufactured in Taiwan, Province Of China, ensuring high quality control and reliability. It is an ideal choice for industrial, consumer electronics, and communication device design workflows.
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Frequently Asked Questions
The maximum clock frequency of this microcontroller is 20 MHz.
It features a program memory size of 64kB FLASH.
This microcontroller operates within a temperature range of -40°C to 85°C.
It has 32 programmable I/O lines available for various applications.
This model supports USART and SPI communication interfaces.
The supply voltage range is from 2.7V to 5.5V.
The dimensions of this microcontroller are 10.1mm x 10.1mm with a height of 1.05mm.
It includes a watchdog timer, PWM channels, and an 8-channel 10-bit ADC for various control applications.
This microcontroller integrates 2 timers for precise control applications.
Yes, it is compliant with RoHS standards, ensuring environmental safety.
It features an 8-bit AVR architecture with a RISC instruction set.
This microcontroller is manufactured in Taiwan, Province Of China.
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