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8-Bit AVR ISP flash microcontrollers in various housings, and AVR enhanced RISC architecture. We offer various types of this series.
| manufacturer | Microchip |
| Manufacturer's name | ATMEGA644-20PU |
| Case | DIP40 |
| I/O Pins | 32 |
| Frequency [MHz] | 20 |
| Flash [KB] | 64 |
| EEPROM [B] | 2k |
| SRAM [B] | 4k |