ATMega644-20PU, MegaAVR, 64 KB Flash, 40 DIP

ATMega644-20PU, MegaAVR, 64 KB Flash, 40 DIP 

• 40-pin AVR Microcontroller
• Flash Program Memory: 64 kbytes
• EEPROM Data Memory: 2 kbytes
• SRAM Data Memory: 4 kbytes
• I/O Pins: 32
• Timers: Two 8-bit / Two 16-bit
• A/D Converter: 10-bit Eight Channel
• PWM: Six Channels
• RTC: Yes with Separate Oscillator
• MSSP: SPI and I²C Master and Slave Support
• USART: Yes Two Channels
• External Oscillator: up to 20MHz

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