Microchip Technology ATMEGA644-20PU
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $8.47 | $8.47 |
| 15+ | $8.20 | $123.00 |
| 25+ | $8.02 | $200.50 |
| 50+ | $7.57 | $378.50 |
| 100+ | $6.68 | $668.00 |
| N+ | $1.34 | Price Inquiry |
Request Quote / Inquiry
| Product attributes | Property Value |
| Manufacturer | Microchip Technology |
| Product Series | AVR® ATmega |
| Packaging | Tube | |
| Core Processor | AVR |
| Core Size | 8-Bit |
| Speed | 20MHz |
| Connectivity | I2C, SPI, UART/USART |
| Peripherals | Brown-out Detect/Reset, POR, PWM, WDT |
| Number of I/O | 32 |
| Program Memory Size | 64KB (32K x 16) |
| Program Memory Type | FLASH |
| EEPROM Size | 2K x 8 |
| RAM Size | 4K x 8 |
| Voltage - Supply (Vcc/Vdd) | 2.7V ~ 5.5V |
| Data Converters | A/D 8x10b |
| Oscillator Type | Internal |
| Operating Temperature | -40°C ~ 85°C (TA) |
| Grade | - |
| Qualification AEC | - |
| Mounting Type | Through Hole |
| Supplier Device Package | 40-PDIP |
| Package / Case | 40-DIP (0.600", 15.24mm) |
| ROHS |  |
The Microchip ATMEGA644-20PU is a high-performance 8-bit AVR microcontroller in a 40-pin DIP package. It delivers 64KB of flash memory and 4KB SRAM, running at up to 20MHz. With a supply range of 2.7V to 5.5V and an industrial temperature range, it is ideal for demanding embedded applications. Its rich peripheral set includes PWM, WDT, and brown-out detection, making it a versatile choice for control systems.
- Large memory footprint: 64KB flash and 4KB SRAM enable complex applications without external memory.
- Wide voltage range: 2.7V to 5.5V operation simplifies power supply design.
- Industrial temperature grade: -40°C to 85°C ensures reliability in harsh environments.
- Through-hole package: 40-DIP is easy to solder and replace in prototyping and legacy designs.
Industrial Automation Controllers
The 64KB flash and 4KB SRAM allow complex control algorithms for PLCs and motor control, while the 20MHz AVR core ensures fast response times.
Embedded Data Logging Systems
With 4KB SRAM and low-power sleep modes, it can buffer sensor data and write to external memory over SPI or I2C without frequent wake-ups.
Automotive Aftermarket Modules
Operating from -40°C to 85°C and with a wide 2.7-5.5V supply, it suits automotive sensor interfaces and body control modules.
Medical Monitoring Devices
The integrated WDT and brown-out reset ensure reliable operation in portable patient monitors, while the 40-DIP package simplifies prototyping.
Smart Grid Metering
Its PWM outputs and analog comparator enable precise current/voltage sensing for energy metering, with enough flash for calibration tables.
Robotics Control Boards
Multiple timers and PWM channels drive servos and DC motors, while the 64KB flash stores complex motion profiles.
- Q: What is the maximum operating frequency of the ATMEGA644-20PU?
- A: The ATMEGA644-20PU operates at up to 20MHz with a supply voltage range of 2.7V to 5.5V.
- Q: How much flash memory does this AVR MCU have?
- A: It features 64KB of in-system programmable flash memory (32K x 16 bits).
- Q: What package is the ATMEGA644-20PU available in?
- A: It comes in a 40-pin PDIP (0.600" width) package, suitable for through-hole mounting.
- Q: Does it include analog comparators?
- A: Yes, it includes an analog comparator, along with PWM, WDT, POR, and brown-out detection.
ATMEGA644-20PU.pdf
- Q: What is the maximum operating frequency of the ATMEGA644-20PU?
- A: The ATMEGA644-20PU operates at up to 20MHz with a supply voltage range of 2.7V to 5.5V.
- Q: How much flash memory does this AVR MCU have?
- A: It features 64KB of in-system programmable flash memory (32K x 16 bits).
- Q: What package is the ATMEGA644-20PU available in?
- A: It comes in a 40-pin PDIP (0.600" width) package, suitable for through-hole mounting.
- Q: Does it include analog comparators?
- A: Yes, it includes an analog comparator, along with PWM, WDT, POR, and brown-out detection.
