8-bit RISC microcontroller featuring an AVR RISC CPU operating at up to 20MHz. This FLASH-based device offers 32KB of program memory and 4KB of RAM, with 32 I/O lines. It operates from a 4.5V to 5.5V supply and includes PWM channels and an ADC. Packaged in a 44-pin TQFP (PQFP44) with dimensions of 10x10mm, it is rated for industrial temperatures from -40°C to 85°C.
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Atmel ATMEGA644P-20AUR technical specifications.
| Max Operating Temperature | 85 |
| Number of Terminals | 44 |
| Min Operating Temperature | -40 |
| Terminal Position | QUAD |
| JEDEC Package Code | S-PQFP-G44 |
| Width | 10 |
| Length | 10 |
| Pin Count | 44 |
| Temperature Grade | INDUSTRIAL |
| Supply Current-Max | 9 |
| Supply Voltage-Nom | 5 |
| Supply Voltage-Min | 4.5 |
| Supply Voltage-Max | 5.5 |
| Clock Frequency-Max | 16 |
| uPs/uCs/Peripheral ICs Type | MICROCONTROLLER, RISC |
| Number of I/O Lines | 32 |
| External Data Bus Width | 0 |
| Address Bus Width | 0 |
| Bit Size | 8 |
| Speed | 20 |
| ROM Programmability | FLASH |
| ROM (words) | 32768 |
| RAM (bytes) | 4096 |
| PWM Channels | YES |
| Has ADC | YES |
| DMA Channels | NO |
| DAC Channels | NO |
| RoHS | Yes |
| Eccn Code | EAR99 |
| Lead Free | Yes |
| HTS Code | 8542.31.00.01 |
| REACH | Compliant |
| Military Spec | False |
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